Compare commits
| Author | SHA1 | Date | |
|---|---|---|---|
|
|
9a4b4536cd
|
||
|
|
102a6d53e5
|
||
|
|
983cdea235
|
||
|
|
2d926f153e
|
||
|
|
a1381dc717
|
||
|
|
c7045d96e4
|
||
|
|
b500e2f647
|
||
|
|
fdd4bbaa54
|
||
|
|
b8ca038153
|
||
|
|
c7811f4001
|
||
|
|
3ae2f6881a
|
||
|
|
a13440b519
|
||
|
|
800a7d6ff9
|
||
|
|
d01253d0d0
|
||
|
|
7885aee8fc
|
||
|
|
27199ee1cc
|
||
|
|
1dd983a453
|
||
|
|
4cd9975017
|
||
|
|
a64382d2de
|
||
|
|
45c554c875
|
||
|
|
841d8b5944
|
||
|
|
613f37983e
|
||
|
|
2658251bcb
|
||
|
|
3d6059c070
|
||
|
|
ed756461e6
|
||
|
|
028f5f0fb8
|
||
|
|
7ae2a9964a
|
||
|
|
abc8dece9c
|
||
|
|
a5f890ae24
|
||
|
|
56901d6068
|
||
|
|
2184870e0b
|
||
|
|
755aadbc6a
|
||
|
|
3554908246
|
||
|
|
2ac3303167
|
||
|
|
7970ba84d1
|
||
|
|
bb7c2730ca
|
||
|
|
4f4e989721
|
||
|
|
32a633188a
|
||
|
|
8ae050baad
|
||
|
|
19d05252ef
|
||
|
|
e1c75a1ba3
|
||
|
|
c21a073984
|
||
|
|
bd473fc890
|
||
|
|
95ff4a08d7
|
||
|
|
29403e0f78
|
||
|
|
0a7730ad9a
|
||
|
|
c4c6119b8a
|
||
|
|
a830480100
|
||
|
|
a56b487bd4
|
||
|
|
81f233b61a
|
||
|
|
0774b8652d
|
||
|
|
dde33f108f
|
@@ -34,3 +34,7 @@ hdm-internettechnik-slides/
|
||||
*.tmp
|
||||
*.bak
|
||||
.idea
|
||||
|
||||
# Interne Klausur-Previews – NIE committen/deployen
|
||||
slides/**/*-INTERN.md
|
||||
slides/*-INTERN.md
|
||||
|
||||
@@ -18,12 +18,12 @@ DEPLOY_HOST = tengo@tuttle.uberspace.de
|
||||
223015b_KLAUSUR = 1
|
||||
|
||||
223015c_NAME = Internettechnologien
|
||||
223015c_KAPITEL = 01-geschichte-grundlagen-html 02-netzwerke-protokolle-css 03-interaktivitaet-javascript klausurfolien klausurfragen
|
||||
223015c_KAPITEL = 01-geschichte-grundlagen-html 02-netzwerke-protokolle-css klausurfolien klausurfragen
|
||||
223015c_DEPLOY = /home/tengo/html/hdm/223015c
|
||||
223015c_KLAUSUR = 1
|
||||
|
||||
dhbw_NAME = Technik I – Grundlagen IT
|
||||
dhbw_KAPITEL = 01_web_eng 02_css_extended 03_nodejs_basics 04_nodejs_advanced 05_testing 06_typescript 07_docker 08_best_practices
|
||||
dhbw_NAME = Web Engineering
|
||||
dhbw_KAPITEL = 01-intro 02-html-css 03-js-frameworks 04-nodejs-basics 05-express 06-testing 07-typescript 08-docker 09-best-practices
|
||||
dhbw_DEPLOY = /home/tengo/html/dhbw
|
||||
dhbw_KLAUSUR =
|
||||
|
||||
|
||||
@@ -13,6 +13,15 @@ case "$COURSE" in
|
||||
SLIDES_URL="https://librete.ch/hdm/223015b"
|
||||
ACCENT_COLOR="#1e5f8a"
|
||||
ACCENT_LIGHT="#e8f4fc"
|
||||
INSTITUTION="HdM Stuttgart"
|
||||
HEADLINE="HdM Vorlesungen"
|
||||
KAPITEL_TERM="Kapitel"
|
||||
BREADCRUMB_URL="../"
|
||||
EXAM_URL=""
|
||||
EXAM_LABEL=""
|
||||
KONTAKT_URL="mailto:mail@librete.ch"
|
||||
KONTAKT_LABEL="Kontakt"
|
||||
QR_IMG="qr-index.svg"
|
||||
;;
|
||||
223015c)
|
||||
TITLE="Grundlagen IT- und Internettechnik"
|
||||
@@ -20,16 +29,72 @@ case "$COURSE" in
|
||||
SLIDES_URL="https://librete.ch/hdm/223015c"
|
||||
ACCENT_COLOR="#d63384"
|
||||
ACCENT_LIGHT="#fce4ec"
|
||||
INSTITUTION="HdM Stuttgart"
|
||||
HEADLINE="HdM Vorlesungen"
|
||||
KAPITEL_TERM="Kapitel"
|
||||
BREADCRUMB_URL="../"
|
||||
EXAM_URL=""
|
||||
EXAM_LABEL=""
|
||||
KONTAKT_URL="mailto:mail@librete.ch"
|
||||
KONTAKT_LABEL="Kontakt"
|
||||
QR_IMG="qr-index.svg"
|
||||
;;
|
||||
dhbw)
|
||||
TITLE="Web Engineering"
|
||||
SUBTITLE="Informatik / Wirtschaftsinformatik"
|
||||
SLIDES_URL="https://librete.ch/dhbw"
|
||||
ACCENT_COLOR="#a02060"
|
||||
ACCENT_LIGHT="#fce4ec"
|
||||
INSTITUTION="DHBW Stuttgart"
|
||||
HEADLINE="DHBW Vorlesungen"
|
||||
KAPITEL_TERM="Sitzung"
|
||||
BREADCRUMB_URL=""
|
||||
EXAM_URL="https://git.librete.ch/DHBW/pruefungsleistung"
|
||||
EXAM_LABEL="Prüfungsleistung"
|
||||
KONTAKT_URL="mailto:michael.czechowski@lehre.dhbw-stuttgart.de"
|
||||
KONTAKT_LABEL="Kontakt"
|
||||
QR_IMG="assets/slides-dhbw.png"
|
||||
;;
|
||||
*)
|
||||
TITLE="$COURSE - HdM Slides"
|
||||
TITLE="$COURSE - Slides"
|
||||
SUBTITLE="Lecture Slides"
|
||||
SLIDES_URL="https://librete.ch/hdm/$COURSE"
|
||||
SLIDES_URL="https://librete.ch/$COURSE"
|
||||
ACCENT_COLOR="#0066cc"
|
||||
ACCENT_LIGHT="#e8f4fc"
|
||||
INSTITUTION="Stuttgart"
|
||||
HEADLINE="Vorlesungen"
|
||||
KAPITEL_TERM="Kapitel"
|
||||
BREADCRUMB_URL=""
|
||||
EXAM_URL=""
|
||||
EXAM_LABEL=""
|
||||
KONTAKT_URL="mailto:mail@librete.ch"
|
||||
KONTAKT_LABEL="Kontakt"
|
||||
QR_IMG="qr-index.svg"
|
||||
;;
|
||||
esac
|
||||
|
||||
# Optional breadcrumb HTML (empty if no parent overview)
|
||||
if [[ -n "$BREADCRUMB_URL" ]]; then
|
||||
BREADCRUMB_HTML="<p class=\"breadcrumb\"><a href=\"$BREADCRUMB_URL\">← Kursübersicht</a></p>"
|
||||
else
|
||||
BREADCRUMB_HTML=""
|
||||
fi
|
||||
|
||||
# Optional exam-link HTML
|
||||
if [[ -n "$EXAM_URL" ]]; then
|
||||
EXAM_HTML="<p class=\"exam-link\"><a href=\"$EXAM_URL\">$EXAM_LABEL →</a></p>"
|
||||
else
|
||||
EXAM_HTML=""
|
||||
fi
|
||||
|
||||
# Footer kursübersicht link only when breadcrumb parent exists
|
||||
if [[ -n "$BREADCRUMB_URL" ]]; then
|
||||
FOOTER_KURS_HTML=" ·
|
||||
<a href=\"$BREADCRUMB_URL\">Kursübersicht</a>"
|
||||
else
|
||||
FOOTER_KURS_HTML=""
|
||||
fi
|
||||
|
||||
# Topic mappings for nice German titles
|
||||
declare -A TOPIC_MAP
|
||||
TOPIC_MAP["intro"]="Einführung"
|
||||
@@ -41,6 +106,14 @@ TOPIC_MAP["vertiefung-offene-fragen"]="Vertiefung & Offene Fragen"
|
||||
TOPIC_MAP["geschichte-grundlagen-html"]="Geschichte, Grundlagen & HTML"
|
||||
TOPIC_MAP["netzwerke-protokolle-css"]="Netzwerke, Protokolle & CSS"
|
||||
TOPIC_MAP["interaktivitaet-javascript"]="Interaktivität & JavaScript"
|
||||
TOPIC_MAP["html-css"]="HTML & CSS"
|
||||
TOPIC_MAP["js-frameworks"]="JS, Frameworks & Build Tools"
|
||||
TOPIC_MAP["nodejs-basics"]="Node.js: Scripting, Running & Building"
|
||||
TOPIC_MAP["express"]="Express API, CRUD & Middlewares"
|
||||
TOPIC_MAP["testing"]="Testing"
|
||||
TOPIC_MAP["typescript"]="TypeScript"
|
||||
TOPIC_MAP["docker"]="Docker, Proxies & DBs"
|
||||
TOPIC_MAP["best-practices"]="Wrap-up & Best Practices"
|
||||
|
||||
# Configure which topics should appear disabled per course
|
||||
# Two modes: fully disabled (non-clickable card) and buttons-disabled (link remains clickable, buttons are disabled)
|
||||
@@ -48,8 +121,17 @@ declare -A DISABLED_FULL
|
||||
declare -A DISABLED_BUTTONS
|
||||
# For course B: chapters 3,4,5 should be fully disabled
|
||||
DISABLED_FULL["223015b"]="speichermedien-schnittstellen distribution-apis-zukunft vertiefung-offene-fragen"
|
||||
# For course C: chapter 3 should keep link clickable but buttons disabled
|
||||
DISABLED_BUTTONS["223015c"]="interaktivitaet-javascript"
|
||||
# For course C: all chapters fully active
|
||||
DISABLED_BUTTONS["223015c"]=""
|
||||
|
||||
# Courses where the "Klausurrelevante Folien" card should be active (clickable)
|
||||
declare -A KLAUSURFOLIEN_ACTIVE
|
||||
KLAUSURFOLIEN_ACTIVE["223015b"]=1
|
||||
|
||||
# Courses where the "Klausurfragen" card should be active (clickable)
|
||||
declare -A KLAUSURFRAGEN_ACTIVE
|
||||
KLAUSURFRAGEN_ACTIVE["223015b"]=1
|
||||
KLAUSURFRAGEN_ACTIVE["223015c"]=1
|
||||
|
||||
cat > "$BUILD_DIR/index.html" << HEADER
|
||||
<!DOCTYPE html>
|
||||
@@ -101,6 +183,16 @@ cat > "$BUILD_DIR/index.html" << HEADER
|
||||
font-size: 0.875rem;
|
||||
margin-top: 0.25rem;
|
||||
}
|
||||
.exam-link {
|
||||
margin-top: 1rem;
|
||||
font-size: 0.95rem;
|
||||
}
|
||||
.exam-link a {
|
||||
color: $ACCENT_COLOR;
|
||||
text-decoration: none;
|
||||
font-weight: 500;
|
||||
}
|
||||
.exam-link a:hover { text-decoration: underline; }
|
||||
/* Use the .termine wrapper and add a gap between cards */
|
||||
.termine {
|
||||
margin-top: 1.5rem;
|
||||
@@ -226,11 +318,12 @@ cat > "$BUILD_DIR/index.html" << HEADER
|
||||
</head>
|
||||
<body>
|
||||
<header>
|
||||
<p class="breadcrumb"><a href="../">← Kursübersicht</a></p>
|
||||
<h1>HdM Vorlesungen</h1>
|
||||
$BREADCRUMB_HTML
|
||||
<h1>$HEADLINE</h1>
|
||||
<h2 class="course-heading">$TITLE</h2>
|
||||
<p class="subtitle">$SUBTITLE</p>
|
||||
<p class="meta">HdM Stuttgart · Sommersemester 2026 · Michael Czechowski</p>
|
||||
<p class="meta">$INSTITUTION · Sommersemester 2026 · Michael Czechowski</p>
|
||||
$EXAM_HTML
|
||||
</header>
|
||||
<div class="termine">
|
||||
HEADER
|
||||
@@ -253,7 +346,7 @@ for html in $(ls "$BUILD_DIR"/[0-9][0-9]-*.html 2>/dev/null | sort); do
|
||||
if [[ "$kapitel_num" == "0" ]] || [[ -z "$kapitel_num" ]]; then
|
||||
kapitel_label="Einführung"
|
||||
else
|
||||
kapitel_label="Kapitel $kapitel_num"
|
||||
kapitel_label="$KAPITEL_TERM $kapitel_num"
|
||||
fi
|
||||
|
||||
pdf_filename="${filename%.html}.pdf"
|
||||
@@ -320,13 +413,29 @@ LINK
|
||||
|
||||
done
|
||||
|
||||
# Add klausurfolien entry if it exists (disabled — wird noch überarbeitet)
|
||||
# Add klausurfolien entry if it exists (active per KLAUSURFOLIEN_ACTIVE, else disabled)
|
||||
if [[ -f "$BUILD_DIR/klausurfolien.html" ]]; then
|
||||
pdf_disabled=""
|
||||
if [[ -f "$BUILD_DIR/klausurfolien.pdf" ]]; then
|
||||
pdf_disabled="<span class=\"btn btn-pdf btn-disabled\">PDF</span>"
|
||||
fi
|
||||
cat >> "$BUILD_DIR/index.html" << KLAUSUR
|
||||
if [[ "${KLAUSURFOLIEN_ACTIVE[$COURSE]}" == "1" ]]; then
|
||||
pdf_active=""
|
||||
if [[ -f "$BUILD_DIR/klausurfolien.pdf" ]]; then
|
||||
pdf_active="<a href=\"klausurfolien.pdf\" class=\"btn btn-pdf\">PDF</a>"
|
||||
fi
|
||||
cat >> "$BUILD_DIR/index.html" << KLAUSUR
|
||||
<div class="kapitel-card" style="border-left: 3px solid $ACCENT_COLOR;">
|
||||
<a href="klausurfolien.html" class="kapitel-link">
|
||||
<div class="kapitel-label">Prüfung</div>
|
||||
<div class="kapitel-title">Klausurrelevante Folien</div>
|
||||
</a>
|
||||
<a href="klausurfolien.html" class="btn btn-slides">Folien</a>
|
||||
$pdf_active
|
||||
</div>
|
||||
KLAUSUR
|
||||
else
|
||||
pdf_disabled=""
|
||||
if [[ -f "$BUILD_DIR/klausurfolien.pdf" ]]; then
|
||||
pdf_disabled="<span class=\"btn btn-pdf btn-disabled\">PDF</span>"
|
||||
fi
|
||||
cat >> "$BUILD_DIR/index.html" << KLAUSUROFF
|
||||
<div class="kapitel-card disabled" style="border-left: 3px solid $ACCENT_COLOR;">
|
||||
<div class="kapitel-link">
|
||||
<div class="kapitel-label">Prüfung</div>
|
||||
@@ -335,20 +444,41 @@ if [[ -f "$BUILD_DIR/klausurfolien.html" ]]; then
|
||||
<span class="btn btn-slides btn-disabled">Folien</span>
|
||||
$pdf_disabled
|
||||
</div>
|
||||
KLAUSUR
|
||||
KLAUSUROFF
|
||||
fi
|
||||
fi
|
||||
|
||||
# Add klausurfragen entry if it exists (disabled — wird noch überarbeitet)
|
||||
# Add klausurfragen entry if it exists (active per KLAUSURFRAGEN_ACTIVE, else disabled)
|
||||
if [[ -f "$BUILD_DIR/klausurfragen.html" ]] || [[ -f "$BUILD_DIR/klausurfragen.pdf" ]]; then
|
||||
pdf_disabled=""
|
||||
if [[ -f "$BUILD_DIR/klausurfragen.pdf" ]]; then
|
||||
pdf_disabled="<span class=\"btn btn-pdf btn-disabled\">PDF</span>"
|
||||
fi
|
||||
slides_disabled=""
|
||||
if [[ -f "$BUILD_DIR/klausurfragen.html" ]]; then
|
||||
slides_disabled="<span class=\"btn btn-slides btn-disabled\">Folien</span>"
|
||||
fi
|
||||
cat >> "$BUILD_DIR/index.html" << KLAUSURFRAGEN
|
||||
if [[ "${KLAUSURFRAGEN_ACTIVE[$COURSE]}" == "1" ]]; then
|
||||
pdf_active=""
|
||||
if [[ -f "$BUILD_DIR/klausurfragen.pdf" ]]; then
|
||||
pdf_active="<a href=\"klausurfragen.pdf\" class=\"btn btn-pdf\">PDF</a>"
|
||||
fi
|
||||
slides_active=""
|
||||
if [[ -f "$BUILD_DIR/klausurfragen.html" ]]; then
|
||||
slides_active="<a href=\"klausurfragen.html\" class=\"btn btn-slides\">Folien</a>"
|
||||
fi
|
||||
cat >> "$BUILD_DIR/index.html" << KLAUSURFRAGEN
|
||||
<div class="kapitel-card" style="border-left: 3px solid $ACCENT_COLOR;">
|
||||
<a href="klausurfragen.html" class="kapitel-link">
|
||||
<div class="kapitel-label">Prüfung</div>
|
||||
<div class="kapitel-title">Klausurfragen</div>
|
||||
</a>
|
||||
$slides_active
|
||||
$pdf_active
|
||||
</div>
|
||||
KLAUSURFRAGEN
|
||||
else
|
||||
pdf_disabled=""
|
||||
if [[ -f "$BUILD_DIR/klausurfragen.pdf" ]]; then
|
||||
pdf_disabled="<span class=\"btn btn-pdf btn-disabled\">PDF</span>"
|
||||
fi
|
||||
slides_disabled=""
|
||||
if [[ -f "$BUILD_DIR/klausurfragen.html" ]]; then
|
||||
slides_disabled="<span class=\"btn btn-slides btn-disabled\">Folien</span>"
|
||||
fi
|
||||
cat >> "$BUILD_DIR/index.html" << KLAUSURFRAGENOFF
|
||||
<div class="kapitel-card disabled" style="border-left: 3px solid $ACCENT_COLOR;">
|
||||
<div class="kapitel-link">
|
||||
<div class="kapitel-label">Prüfung</div>
|
||||
@@ -357,18 +487,18 @@ if [[ -f "$BUILD_DIR/klausurfragen.html" ]] || [[ -f "$BUILD_DIR/klausurfragen.p
|
||||
$slides_disabled
|
||||
$pdf_disabled
|
||||
</div>
|
||||
KLAUSURFRAGEN
|
||||
KLAUSURFRAGENOFF
|
||||
fi
|
||||
fi
|
||||
|
||||
cat >> "$BUILD_DIR/index.html" << FOOTER
|
||||
</div>
|
||||
<div class="qr-section">
|
||||
<img src="qr-index.svg" alt="QR Code" class="qr-code">
|
||||
<img src="$QR_IMG" alt="QR Code" class="qr-code">
|
||||
<p class="qr-url">$SLIDES_URL</p>
|
||||
</div>
|
||||
<footer>
|
||||
<a href="mailto:mail@librete.ch">Kontakt</a> ·
|
||||
<a href="../">Kursübersicht</a>
|
||||
<a href="$KONTAKT_URL">$KONTAKT_LABEL</a>$FOOTER_KURS_HTML
|
||||
</footer>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
@@ -9,6 +9,7 @@ title: Dateiformate, Schnittstellen, Speichermedien & Distributionswege
|
||||
---
|
||||
|
||||
<style>
|
||||
|
||||
:root {
|
||||
--color-foreground: #1a1a2e;
|
||||
--color-highlight: #1e5f8a;
|
||||
@@ -1191,33 +1192,6 @@ Sog. RGB Tuple (geordnete endliche Liste)
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
<!--
|
||||
Kernidee: jedes Byte lässt sich sauber in zwei 4-Bit-Hälften (Nibbles) zerlegen. Jede Hälfte hat 2⁴ = 16 Zustände – und genau 16 Symbole hat Hex (0-F). Deshalb passt Hex perfekt: 1 Nibble = 1 Hex-Ziffer, 1 Byte = 2 Hex-Ziffern. Keine krumme Umrechnung.
|
||||
-->
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
<!--
|
||||
Warum gerade 8 Bit?
|
||||
- CPU adressiert byteweise — kleinste adressierbare Einheit
|
||||
- Halbe Byte (z.B. 0x0000.5) existieren nicht
|
||||
- Speichercontroller, Bus, CPU-Register alle auf 8-Bit-Häppchen ausgelegt
|
||||
- Einzelne Bit lesen: erst Byte holen, dann mit Bitmaske isolieren (byte & 0b1000_0000)
|
||||
- Hardware-Geschichte: IBM System/360 (1964) setzte 8-Bit-Standard, 7-Bit-ASCII + 1 Paritätsbit
|
||||
-->
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: lead -->
|
||||
|
||||
# Hexadezimal
|
||||
@@ -1249,50 +1223,6 @@ Warum gerade 8 Bit?
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
<!--
|
||||
Hex ↔ Dezimal Lookup-Tabelle: 0–F = 0–15
|
||||
A=10, B=11, C=12, D=13, E=14, F=15
|
||||
-->
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
<!--
|
||||
1 Byte = 8 Bit = 2 Hex-Ziffern = 1 ASCII-Zeichen
|
||||
- Dieselbe Datei, drei Schreibweisen
|
||||
- Jeder Rahmen = ein Byte
|
||||
- Byte ändern sich nicht, nur unsere Anzeige
|
||||
- ↵ (0x0A) = nicht druckbar → Hex-Editoren zeigen . als Platzhalter
|
||||
-->
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
<!--
|
||||
Dieselben 8 Byte (PNG-Dateianfang: 89 50 4E 47 0D 0A 1A 0A) — drei Perspektiven:
|
||||
1. Bitstream — was wirklich gespeichert wird (unleserlich)
|
||||
2. Hex — gruppiert in 8-Bit-Häppchen (kompakt)
|
||||
3. Bedeutung — was die Byte signalisieren:
|
||||
- 89: Magic Byte (>127 → "ich bin Binärdatei")
|
||||
- 50 4E 47: P N G (ASCII-Format-Kürzel)
|
||||
- 0D 0A 1A 0A: CR LF EOF LF (erkennt kaputte Übertragung)
|
||||
-->
|
||||
|
||||
---
|
||||
|
||||
# Wo begegnet Ihnen Hex-Code?
|
||||
|
||||
| Kontext | Beispiel |
|
||||
@@ -2143,4 +2073,4 @@ Vollständige Lizenz: https://creativecommons.org/licenses/by-sa/4.0/
|
||||
- hex5: ZIP (50 4B 03 04)
|
||||
- Gruppenarbeit: 3-4 Personen
|
||||
- Ziel: Hex-Dump lesen lernen, Dateiformate verstehen
|
||||
-->
|
||||
-->
|
||||
|
||||
@@ -220,7 +220,7 @@ Jeder Pixel speichert einen RGB-Farbwert (3 Bytes).
|
||||
**Aufbau:** Liste von Pixeln mit Farbwerten (2D-Array)
|
||||
|
||||
**Speicherbedarf (unkomprimiert):**
|
||||
Breite × Höhe × Farbtiefe (in Bytes)
|
||||
Breite × Höhe × Farbtiefe (in Byte)
|
||||
|
||||
**Beispiele:** JPEG, PNG, WebP
|
||||
|
||||
@@ -361,6 +361,15 @@ Vektorgrafiken speichern keine Pixel, sondern mathematische Beschreibungen: Koor
|
||||
- Frage: "Warum verschickt euch der Grafiker das Logo als .ai oder .svg?"
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: lead -->
|
||||
@@ -374,6 +383,14 @@ Vektorgrafiken speichern keine Pixel, sondern mathematische Beschreibungen: Koor
|
||||
- Wir nutzen seine Schwächen aus
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
<!-- _class: klausur -->
|
||||
@@ -498,6 +515,16 @@ Das Auge ist ein Tiefpassfilter: Hohe Frequenzen (feine Details) werden schwäch
|
||||
- Interaktive Demo: https://claude.ai/public/artifacts/452e62f1-8525-442d-aa88-bf3795cab2c5
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: klausur -->
|
||||
@@ -507,7 +534,7 @@ Das Auge ist ein Tiefpassfilter: Hohe Frequenzen (feine Details) werden schwäch
|
||||
|
||||

|
||||
|
||||
# JPEG Schritt 1: Farbraumkonversion
|
||||
# JPEG Schritt 1: Farbraumkonvertierung
|
||||
|
||||
**RGB → Y'CbCr**
|
||||
|
||||
@@ -530,11 +557,33 @@ KLAUSURRELEVANT:
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
<!-- _class: erklaerung -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||
# Farbraumkonversion – Vertiefung
|
||||
# Farbraumkonvertierung – Vertiefung
|
||||
|
||||
RGB→YCbCr nutzt die Biologie des menschlichen Auges: 120 Mio. Stäbchen (Helligkeit) vs. nur 6 Mio. Zapfen (Farbe) – ein 20:1-Verhältnis. Die Transformation erfolgt über eine lineare Matrix:
|
||||
|
||||
@@ -546,7 +595,7 @@ Cr = 0.500·R − 0.419·G − 0.081·B + 128
|
||||
|
||||
Die Gewichtung (G dominiert mit 59%) entspricht der spektralen Empfindlichkeit des Auges bei Tageslicht. Y enthält alle Schärfeinformation; Cb/Cr können reduziert werden.
|
||||
|
||||
**Chroma Subsampling – Notation J:a:b** (bezogen auf 4×2 Pixel):
|
||||
**Chroma Subsampling – Notation `J:a:b`** (bezogen auf 4×2 Pixel):
|
||||
|
||||
| Schema | Farbdaten | Einsatz |
|
||||
|--------|-----------|---------|
|
||||
@@ -713,11 +762,6 @@ KLAUSURRELEVANT:
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: klausur -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
<!-- _backgroundColor: #e3f2fd -->
|
||||
|
||||
# JPEG Schritt 6: Huffman-Coding
|
||||
|
||||
**Verlustfreie Kompression der Restwerte**
|
||||
@@ -770,37 +814,10 @@ JPEG verwendet zwei Huffman-Tabellen: eine für DC-Koeffizienten (Durchschnittsw
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: klausur -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
<!-- _backgroundColor: #e3f2fd -->
|
||||
<!--
|
||||
# Huffman-Coding: Beispiel
|
||||
|
||||
**Originaltext:** `ABRACADABRA` (11 Zeichen × 8 Bit = 88 Bit)
|
||||
|
||||
**Häufigkeitsanalyse:**
|
||||
A=5, B=2, R=2, C=1, D=1
|
||||
|
||||
**Huffman-Baum → Codes:**
|
||||
| Zeichen | Häufigkeit | Code |
|
||||
|---------|------------|------|
|
||||
| A | 5 | `0` |
|
||||
| B | 2 | `10` |
|
||||
| R | 2 | `110` |
|
||||
| C | 1 | `1110` |
|
||||
| D | 1 | `1111` |
|
||||
|
||||
**Codiert:** `0 10 110 0 1110 0 1111 0 10 110 0` = **23 Bit**
|
||||
**Kompression:** 88 → 23 Bit = **74% gespart**
|
||||
|
||||
|
||||
- Beispiel Schritt für Schritt durchrechnen
|
||||
- Warum funktioniert's? A kommt 5× vor, bekommt kürzesten Code
|
||||
- Präfix-Eigenschaft: Kein Code ist Anfang eines anderen → eindeutig dekodierbar
|
||||
- Frage: "Was passiert, wenn alle Zeichen gleich häufig sind?" → Keine Ersparnis
|
||||
- In JPEG: Nicht Buchstaben, sondern DCT-Koeffizienten werden so codiert
|
||||
-->
|
||||

|
||||
|
||||
---
|
||||
|
||||
@@ -824,8 +841,6 @@ A=5, B=2, R=2, C=1, D=1
|
||||
# Andere Bildformate
|
||||
## PNG, GIF, WebP, AVIF
|
||||
|
||||
15:33 Uhr weiter
|
||||
|
||||
<!--
|
||||
- JPEG ist nicht für alles geeignet
|
||||
- Jetzt: Alternativen und ihre Stärken
|
||||
@@ -1117,29 +1132,10 @@ KLAUSURRELEVANT:
|
||||
|
||||
---
|
||||
|
||||
# Container + Codec = Video
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||
```
|
||||
┌─────────────────────────────┐
|
||||
│ Container (z.B. MP4) │
|
||||
│ ┌────────────────────────┐ │
|
||||
│ │ Video-Stream (H.264) │ │
|
||||
│ ├────────────────────────┤ │
|
||||
│ │ Audio-Stream (AAC) │ │
|
||||
│ ├────────────────────────┤ │
|
||||
│ │ Untertitel (SRT) │ │
|
||||
│ ├────────────────────────┤ │
|
||||
│ │ Metadaten │ │
|
||||
│ └────────────────────────┘ │
|
||||
└─────────────────────────────┘
|
||||
```
|
||||
|
||||
<!--
|
||||
- Container = Verpackung
|
||||
- Codec = wie der Inhalt komprimiert ist
|
||||
- Ein MP4 mit H.264 und ein MP4 mit H.265 haben dieselbe Endung
|
||||
- Wichtig für Kompatibilität: Player muss Codec unterstützen
|
||||
-->
|
||||

|
||||
|
||||
---
|
||||
|
||||
|
||||
@@ -119,7 +119,7 @@ Hochschule der Medien Stuttgart
|
||||
|
||||
<!-- _class: lead -->
|
||||
|
||||
# Kapitel 3 – 23.01.2026
|
||||
# Kapitel 3
|
||||
## Speichermedien & Schnittstellen
|
||||
|
||||
---
|
||||
@@ -369,8 +369,7 @@ Seitdem native Linux-Unterstützung.
|
||||
**Features:**
|
||||
- Journaling (Crash-Sicherheit)
|
||||
- Dateirechte (ACLs)
|
||||
- Kompression, Verschlüsselung
|
||||
- Große Dateien und Volumes
|
||||
- Kompression, Verschlüsselung, große Dateien und Volumes
|
||||
|
||||
**Nachteile:**
|
||||
- Nur Windows schreibt nativ
|
||||
@@ -629,11 +628,6 @@ Millionen von Websites und Spielen verloren.
|
||||
- 30 Jahre Haltbarkeit
|
||||
- Für Cold Storage ideal
|
||||
|
||||
**M-DISC:**
|
||||
- Spezielle DVD/Blu-ray
|
||||
- 1.000+ Jahre Haltbarkeit (Herstellerangabe)
|
||||
- Für kleine, wichtige Daten
|
||||
|
||||
**Cloud:**
|
||||
- Glacier, Backblaze B2
|
||||
- Günstig für Langzeit
|
||||
|
||||
@@ -0,0 +1,34 @@
|
||||
# CLAUDE.md — 223015b lecture deck
|
||||
|
||||
Marp lecture slides + master question catalog for HdM Stuttgart course **223015b — „Dateiformate, Schnittstellen, Speichermedien & Distributionswege"**. Author: Michael Czechowski, SoSe 2026. This directory is the **source of truth**; the exam artifacts (Moodle XML) are derived downstream (see [Downstream](#downstream)).
|
||||
|
||||
## Files
|
||||
|
||||
| File | Role |
|
||||
|---|---|
|
||||
| `00-intro.md` | Intro / organizational deck |
|
||||
| `01-grundlagen-text-audio.md` | Grundlagen: Text & Audio |
|
||||
| `02-bild-audio-video.md` | Bild, Audio, Video |
|
||||
| `03-speichermedien-schnittstellen.md` | Speichermedien & Schnittstellen |
|
||||
| `04-distribution-apis-zukunft.md` | Distribution, APIs, Zukunft |
|
||||
| `05-vertiefung-offene-fragen.md` | Vertiefung / offene Fragen |
|
||||
| `klausurfolien.md` | Exam-review slides |
|
||||
| `klausurfragen.md` | **Master question catalog — 122 Fragen** (`[MC]/[MM]/[MATCH]/[ORDER]/[ESSAY]/[SHORTANS]/[NUMERIC]/[CLOZE]`) |
|
||||
| `assets/`, `materials/` | Images and supporting material |
|
||||
|
||||
All decks are **Marp** Markdown (`marp: true`, theme `gaia`) with a shared inline `<style>` block. Highlight color for this course: `#1e5f8a` (blue). Sibling deck: `../223015c/` (Internettechnik, highlight `#d63384`).
|
||||
|
||||
## Conventions
|
||||
|
||||
- Each question in `klausurfragen.md` = `### <ID> – <title>` + `**Thema:**` + `**Punkte:**` + `**Typ:**` + body + `> **Feedback:**`/`> **Musterlösung:**`. Keep this shape — downstream tooling parses `**Thema:**` and `**Typ:**`.
|
||||
- Correct MC options marked `- [x] **…** ✅`; matching as a 2-column table; ordering as a numbered list.
|
||||
- `marp` CLI renders to HTML/PDF: `marp <file>.md` (see marp-team/marp-cli).
|
||||
|
||||
## Downstream
|
||||
|
||||
The **exam question bank + Moodle Quiz XML** live in a separate repo:
|
||||
|
||||
- Local: `/home/mwc/Documents/HDM/klausur/`
|
||||
- Git: `ssh://tengo@git.librete.ch:41240/libretech/2026-hdm-klausur.git`
|
||||
|
||||
There, `klausurfragen-b-course-dateiformate.md` is a **curated subset (81/122)** of this deck's `klausurfragen.md`, and the questions are exported as Moodle XML for import. **Edit questions here first**, then sync the subset + regenerate/patch the XML downstream (that repo's CLAUDE.md + `moodle-quiz-xml` skill document the XML format and workflow).
|
||||
|
After Width: | Height: | Size: 283 KiB |
|
After Width: | Height: | Size: 284 KiB |
@@ -0,0 +1,205 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Aliasing — derselbe Fehler in zwei Sinnen</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--audio: #ea580c;
|
||||
--bild: #2563eb;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 30px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 24px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.pair {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 1fr;
|
||||
gap: 22px;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
.modality {
|
||||
border: 2px solid;
|
||||
border-radius: 12px;
|
||||
padding: 16px 18px;
|
||||
background: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 12px;
|
||||
}
|
||||
.modality.audio { border-color: var(--audio); }
|
||||
.modality.bild { border-color: var(--bild); }
|
||||
|
||||
.mod-head { display: flex; justify-content: space-between; align-items: baseline; }
|
||||
.mod-name { font-size: 1.25rem; font-weight: 700; }
|
||||
.modality.audio .mod-name { color: var(--audio); }
|
||||
.modality.bild .mod-name { color: var(--bild); }
|
||||
.mod-tag { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); }
|
||||
|
||||
.canvas {
|
||||
background: var(--soft);
|
||||
border-radius: 8px;
|
||||
overflow: hidden;
|
||||
}
|
||||
.canvas svg { display: block; }
|
||||
|
||||
.scene-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
|
||||
.scene { display: flex; flex-direction: column; gap: 4px; }
|
||||
.scene-label {
|
||||
font-size: 0.68rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.1em;
|
||||
color: var(--muted);
|
||||
}
|
||||
.scene-cap {
|
||||
font-size: 0.78rem;
|
||||
color: var(--muted);
|
||||
line-height: 1.4;
|
||||
font-family: ui-monospace, monospace;
|
||||
}
|
||||
.scene-cap strong { color: var(--dark); }
|
||||
|
||||
.ear-eye {
|
||||
font-size: 0.86rem;
|
||||
line-height: 1.5;
|
||||
color: var(--dark);
|
||||
}
|
||||
.ear-eye .arrow { color: var(--hl); font-weight: 700; }
|
||||
.ear-eye-headline {
|
||||
font-size: 0.9rem;
|
||||
font-weight: 700;
|
||||
}
|
||||
.modality.audio .ear-eye-headline { color: var(--audio); }
|
||||
.modality.bild .ear-eye-headline { color: var(--bild); }
|
||||
|
||||
.verdict {
|
||||
margin-top: 22px;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Aliasing — derselbe Fehler in zwei Sinnen</h1>
|
||||
<div class="sub">Was im Ohr <strong>Brummen</strong> macht, macht im Auge <strong>Moiré</strong>. Wurzel: Sampling zu grob.</div>
|
||||
|
||||
<div class="pair">
|
||||
|
||||
<div class="modality audio">
|
||||
<div class="mod-head">
|
||||
<span class="mod-name">Audio</span>
|
||||
<span class="mod-tag">Unterabtastung</span>
|
||||
</div>
|
||||
|
||||
<div class="scene-pair">
|
||||
<div class="scene">
|
||||
<div class="scene-label">Original (18 kHz)</div>
|
||||
<div class="canvas">
|
||||
<svg viewBox="0 0 280 80" width="100%" height="80" preserveAspectRatio="none">
|
||||
<line x1="0" y1="40" x2="280" y2="40" stroke="#cbd5e1" stroke-width="1" stroke-dasharray="3,4"/>
|
||||
<path d="M0,40 Q7,5 14,40 T28,40 T42,40 T56,40 T70,40 T84,40 T98,40 T112,40 T126,40 T140,40 T154,40 T168,40 T182,40 T196,40 T210,40 T224,40 T238,40 T252,40 T266,40 T280,40"
|
||||
stroke="#ea580c" stroke-width="2" fill="none"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="scene-cap">20 Schwingungen<br>schnelle Welle</div>
|
||||
</div>
|
||||
<div class="scene">
|
||||
<div class="scene-label">Bei 22 kHz gesampelt</div>
|
||||
<div class="canvas">
|
||||
<svg viewBox="0 0 280 80" width="100%" height="80" preserveAspectRatio="none">
|
||||
<line x1="0" y1="40" x2="280" y2="40" stroke="#cbd5e1" stroke-width="1" stroke-dasharray="3,4"/>
|
||||
<path d="M0,40 Q7,5 14,40 T28,40 T42,40 T56,40 T70,40 T84,40 T98,40 T112,40 T126,40 T140,40 T154,40 T168,40 T182,40 T196,40 T210,40 T224,40 T238,40 T252,40 T266,40 T280,40"
|
||||
stroke="#fed7aa" stroke-width="1.2" fill="none"/>
|
||||
<path d="M0,40 Q70,10 140,40 T280,40"
|
||||
stroke="#ea580c" stroke-width="2.5" fill="none"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="scene-cap"><strong>2 Schwingungen</strong><br>Brumm-Frequenz</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="ear-eye">
|
||||
<div class="ear-eye-headline">Was das Ohr hört</div>
|
||||
Ein schriller 18-kHz-Ton wird zu einem dumpfen 4-kHz-Brumm. Das hohe ist <strong>nicht leiser</strong> — es ist <strong>verloren und falsch ersetzt</strong>.
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="modality bild">
|
||||
<div class="mod-head">
|
||||
<span class="mod-name">Bild</span>
|
||||
<span class="mod-tag">Moiré-Effekt</span>
|
||||
</div>
|
||||
|
||||
<div class="scene-pair">
|
||||
<div class="scene">
|
||||
<div class="scene-label">Original (feine Streifen)</div>
|
||||
<div class="canvas">
|
||||
<svg viewBox="0 0 280 80" width="100%" height="80" preserveAspectRatio="none">
|
||||
<defs>
|
||||
<pattern id="fine-real" x="0" y="0" width="3" height="80" patternUnits="userSpaceOnUse">
|
||||
<rect x="0" y="0" width="1.5" height="80" fill="#1e3a8a"/>
|
||||
</pattern>
|
||||
</defs>
|
||||
<rect x="0" y="0" width="280" height="80" fill="url(#fine-real)"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="scene-cap">93 Linien<br>volle Auflösung</div>
|
||||
</div>
|
||||
<div class="scene">
|
||||
<div class="scene-label">In niedriger DPI gerendert</div>
|
||||
<div class="canvas">
|
||||
<svg viewBox="0 0 280 80" width="100%" height="80" preserveAspectRatio="none">
|
||||
<defs>
|
||||
<linearGradient id="moire-bands" x1="0" y1="0" x2="1" y2="0">
|
||||
<stop offset="0%" stop-color="#1e3a8a"/>
|
||||
<stop offset="10%" stop-color="#bfdbfe"/>
|
||||
<stop offset="20%" stop-color="#1e3a8a"/>
|
||||
<stop offset="30%" stop-color="#bfdbfe"/>
|
||||
<stop offset="40%" stop-color="#1e3a8a"/>
|
||||
<stop offset="50%" stop-color="#bfdbfe"/>
|
||||
<stop offset="60%" stop-color="#1e3a8a"/>
|
||||
<stop offset="70%" stop-color="#bfdbfe"/>
|
||||
<stop offset="80%" stop-color="#1e3a8a"/>
|
||||
<stop offset="90%" stop-color="#bfdbfe"/>
|
||||
<stop offset="100%" stop-color="#1e3a8a"/>
|
||||
</linearGradient>
|
||||
</defs>
|
||||
<rect x="0" y="0" width="280" height="80" fill="url(#moire-bands)"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="scene-cap"><strong>5 breite Bänder</strong><br>Moiré-Frequenz</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="ear-eye">
|
||||
<div class="ear-eye-headline">Was das Auge sieht</div>
|
||||
Feine Linien sind weg, dafür <strong>breite Streifen</strong>, die nie da waren. Aus 93 Linien werden 5 Bänder — das Bild lügt.
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Aliasing kennt keine Modalität. Es ist ein <strong>mathematischer</strong> Fehler — kein technischer.</div>
|
||||
<div class="verdict-a">Egal ob Ton, Bild, Video, Radar, GPS — Sampling muss immer mindestens <strong>doppelt</strong> so dicht sein wie das Signal. Sonst tauscht die Realität Frequenzen aus.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 100 KiB |
@@ -0,0 +1,117 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Byte für Byte — drei Brillen</title>
|
||||
<style>
|
||||
:root {
|
||||
--hl: #d63384;
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--border: #cbd5e1;
|
||||
--bg-soft: #f8fafc;
|
||||
--bin-bg: #0f0f23;
|
||||
--bin-fg: #e5e7eb;
|
||||
--binary-mark: #ef4444;
|
||||
--ascii-ok: #16a34a;
|
||||
--ctrl: #9ca3af;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 28px 32px; }
|
||||
h1 { text-align: center; margin: 0 0 4px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 22px; font-size: 1rem; }
|
||||
.sub code { font-family: ui-monospace, "SF Mono", Menlo, monospace; }
|
||||
|
||||
.windows { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 18px; max-width: 1180px; margin: 0 auto; }
|
||||
|
||||
.window { border: 2px solid var(--border); border-radius: 10px; overflow: hidden; display: flex; flex-direction: column; }
|
||||
.window-header { background: var(--bg-soft); padding: 10px 14px; border-bottom: 2px solid var(--border); display: flex; flex-direction: column; gap: 2px; }
|
||||
.window-title { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); }
|
||||
.window-name { font-size: 1.15rem; font-weight: 700; color: var(--dark); }
|
||||
|
||||
.window-body { padding: 14px 16px; flex: 1; display: flex; flex-direction: column; gap: 6px; font-family: ui-monospace, "SF Mono", Menlo, monospace; }
|
||||
|
||||
.window.bin .window-body { background: var(--bin-bg); }
|
||||
.window.bin .row { color: var(--bin-fg); font-size: 1.05rem; letter-spacing: 0.04em; }
|
||||
|
||||
.window.hex .row { color: var(--dark); font-size: 1.4rem; font-weight: 700; letter-spacing: 0.06em; }
|
||||
|
||||
.window.text .row { font-size: 1.4rem; font-weight: 700; display: flex; align-items: center; gap: 10px; }
|
||||
.window.text .glyph.printable { color: var(--ascii-ok); }
|
||||
.window.text .glyph.ctrl { color: var(--ctrl); font-size: 1.1rem; }
|
||||
.window.text .glyph.binary { color: var(--binary-mark); }
|
||||
.window.text .note { font-size: 0.78rem; font-weight: 400; color: var(--muted); margin-left: auto; }
|
||||
|
||||
.footnote { margin-top: 24px; max-width: 1100px; margin-left: auto; margin-right: auto; display: flex; gap: 32px; justify-content: center; font-size: 0.95rem; }
|
||||
.legend { display: flex; align-items: center; gap: 8px; }
|
||||
.swatch { display: inline-block; width: 16px; height: 16px; border-radius: 3px; }
|
||||
.swatch.binary { background: #fee2e2; border: 2px solid var(--binary-mark); }
|
||||
.swatch.ascii { background: #dcfce7; border: 2px solid var(--ascii-ok); }
|
||||
.verdict { margin-top: 14px; text-align: center; font-size: 1.05rem; color: var(--dark); }
|
||||
.verdict strong { color: var(--binary-mark); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Byte für Byte</h1>
|
||||
<div class="sub">Eine Datei — drei Brillen. Beispiel: erste 8 Byte einer PNG-Datei.</div>
|
||||
|
||||
<div class="windows">
|
||||
|
||||
<div class="window bin">
|
||||
<div class="window-header">
|
||||
<div class="window-title">Fenster 1</div>
|
||||
<div class="window-name">Bin · rohe 0 und 1</div>
|
||||
</div>
|
||||
<div class="window-body">
|
||||
<div class="row">10001001</div>
|
||||
<div class="row">01010000</div>
|
||||
<div class="row">01001110</div>
|
||||
<div class="row">01000111</div>
|
||||
<div class="row">00001101</div>
|
||||
<div class="row">00001010</div>
|
||||
<div class="row">00011010</div>
|
||||
<div class="row">00001010</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="window hex">
|
||||
<div class="window-header">
|
||||
<div class="window-title">Fenster 2</div>
|
||||
<div class="window-name">Hex · 2 Ziffern pro Byte</div>
|
||||
</div>
|
||||
<div class="window-body">
|
||||
<div class="row">89</div>
|
||||
<div class="row">50</div>
|
||||
<div class="row">4E</div>
|
||||
<div class="row">47</div>
|
||||
<div class="row">0D</div>
|
||||
<div class="row">0A</div>
|
||||
<div class="row">1A</div>
|
||||
<div class="row">0A</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="window text">
|
||||
<div class="window-header">
|
||||
<div class="window-title">Fenster 3</div>
|
||||
<div class="window-name">Text · ASCII oder ✗ (> 126)</div>
|
||||
</div>
|
||||
<div class="window-body">
|
||||
<div class="row"><span class="glyph binary">✗</span><span class="note">137 > 126</span></div>
|
||||
<div class="row"><span class="glyph printable">P</span><span class="note">80</span></div>
|
||||
<div class="row"><span class="glyph printable">N</span><span class="note">78</span></div>
|
||||
<div class="row"><span class="glyph printable">G</span><span class="note">71</span></div>
|
||||
<div class="row"><span class="glyph ctrl">CR</span><span class="note">13 · Steuerz.</span></div>
|
||||
<div class="row"><span class="glyph ctrl">LF</span><span class="note">10 · Steuerz.</span></div>
|
||||
<div class="row"><span class="glyph ctrl">SUB</span><span class="note">26 · Steuerz.</span></div>
|
||||
<div class="row"><span class="glyph ctrl">LF</span><span class="note">10 · Steuerz.</span></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
Mindestens ein Byte mit Wert > 126 → <strong>Binärdatei</strong>. Sonst: reine Textdatei.
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 56 KiB |
@@ -0,0 +1,172 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Container ≠ Codec</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--container: #2563eb;
|
||||
--video: #7c3aed;
|
||||
--audio: #ea580c;
|
||||
--subs: #16a34a;
|
||||
--meta: #94a3b8;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 28px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 22px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.scene {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 1fr;
|
||||
gap: 22px;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
.container-box {
|
||||
border: 3px dashed var(--container);
|
||||
border-radius: 14px;
|
||||
padding: 14px 16px 18px;
|
||||
background: #fff;
|
||||
position: relative;
|
||||
}
|
||||
.container-tag {
|
||||
position: absolute;
|
||||
top: -12px;
|
||||
left: 18px;
|
||||
background: #fff;
|
||||
padding: 0 10px;
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.78rem;
|
||||
font-weight: 700;
|
||||
color: var(--container);
|
||||
}
|
||||
.container-label {
|
||||
text-align: center;
|
||||
font-size: 0.7rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.12em;
|
||||
color: var(--muted);
|
||||
margin-bottom: 10px;
|
||||
}
|
||||
|
||||
.track {
|
||||
display: grid;
|
||||
grid-template-columns: 90px 1fr;
|
||||
gap: 12px;
|
||||
align-items: center;
|
||||
background: var(--soft);
|
||||
border-left: 4px solid;
|
||||
border-radius: 6px;
|
||||
padding: 9px 14px;
|
||||
margin-bottom: 6px;
|
||||
}
|
||||
.track.video { border-left-color: var(--video); }
|
||||
.track.audio { border-left-color: var(--audio); }
|
||||
.track.subs { border-left-color: var(--subs); }
|
||||
.track.meta { border-left-color: var(--meta); }
|
||||
|
||||
.track-label {
|
||||
font-size: 0.78rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.08em;
|
||||
}
|
||||
.track.video .track-label { color: var(--video); }
|
||||
.track.audio .track-label { color: var(--audio); }
|
||||
.track.subs .track-label { color: var(--subs); }
|
||||
.track.meta .track-label { color: var(--meta); }
|
||||
|
||||
.codec-pill {
|
||||
display: inline-block;
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.82rem;
|
||||
background: #fff;
|
||||
border: 1px solid var(--border);
|
||||
padding: 2px 9px;
|
||||
border-radius: 4px;
|
||||
color: var(--dark);
|
||||
}
|
||||
|
||||
.verdict {
|
||||
margin-top: 22px;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
.verdict-a code { font-family: ui-monospace, monospace; background: var(--soft); padding: 1px 5px; border-radius: 4px; }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Container ≠ Codec</h1>
|
||||
<div class="sub">Die <strong>Hülle</strong> sagt nichts darüber, <strong>wie</strong> der Inhalt komprimiert wurde.</div>
|
||||
|
||||
<div class="scene">
|
||||
|
||||
<div class="container-box">
|
||||
<span class="container-tag">.mp4</span>
|
||||
<div class="container-label">Datei A — älterer Stand</div>
|
||||
|
||||
<div class="track video">
|
||||
<span class="track-label">Video</span>
|
||||
<span><span class="codec-pill">H.264 / AVC</span> · 1080p · 8 Mbit/s</span>
|
||||
</div>
|
||||
<div class="track audio">
|
||||
<span class="track-label">Audio</span>
|
||||
<span><span class="codec-pill">AAC</span> · 192 kbit/s · Stereo</span>
|
||||
</div>
|
||||
<div class="track subs">
|
||||
<span class="track-label">Untertitel</span>
|
||||
<span><span class="codec-pill">TTML</span> · de + en</span>
|
||||
</div>
|
||||
<div class="track meta">
|
||||
<span class="track-label">Metadaten</span>
|
||||
<span>Titel · Dauer · Datum · Bitrate</span>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="container-box">
|
||||
<span class="container-tag">.mp4</span>
|
||||
<div class="container-label">Datei B — modern</div>
|
||||
|
||||
<div class="track video">
|
||||
<span class="track-label">Video</span>
|
||||
<span><span class="codec-pill">AV1</span> · 4K · 25 Mbit/s</span>
|
||||
</div>
|
||||
<div class="track audio">
|
||||
<span class="track-label">Audio</span>
|
||||
<span><span class="codec-pill">Opus</span> · 128 kbit/s · 5.1 Surround</span>
|
||||
</div>
|
||||
<div class="track subs">
|
||||
<span class="track-label">Untertitel</span>
|
||||
<span><span class="codec-pill">WebVTT</span> · de + en + ja</span>
|
||||
</div>
|
||||
<div class="track meta">
|
||||
<span class="track-label">Metadaten</span>
|
||||
<span>Titel · Dauer · Datum · HDR-Info</span>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Gleiche Endung. Anderes Innenleben.</div>
|
||||
<div class="verdict-a"><strong>Container</strong> = Verpackung (<code>.mp4</code>, <code>.mkv</code>, <code>.webm</code>). <strong>Codec</strong> = Komprimierer (H.264 / AV1 / AAC / Opus). <strong>Tool:</strong> <code>mediainfo <datei></code> zeigt beides.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 62 KiB |
@@ -0,0 +1,200 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Drei Dateien — dasselbe Innenleben</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--foto: #2563eb;
|
||||
--audio: #ea580c;
|
||||
--pdf: #7c3aed;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 32px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.85rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 28px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.files {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 1fr 1fr;
|
||||
gap: 22px;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
.file {
|
||||
border: 2px solid;
|
||||
border-radius: 12px;
|
||||
padding: 16px 18px;
|
||||
background: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 12px;
|
||||
}
|
||||
.file.foto { border-color: var(--foto); }
|
||||
.file.audio { border-color: var(--audio); }
|
||||
.file.pdf { border-color: var(--pdf); }
|
||||
|
||||
.file-head { display: flex; justify-content: space-between; align-items: baseline; }
|
||||
.file-name { font-size: 1.2rem; font-weight: 700; }
|
||||
.file.foto .file-name { color: var(--foto); }
|
||||
.file.audio .file-name { color: var(--audio); }
|
||||
.file.pdf .file-name { color: var(--pdf); }
|
||||
.file-ext { font-family: ui-monospace, monospace; font-size: 0.78rem; color: var(--muted); }
|
||||
|
||||
.preview {
|
||||
border-radius: 8px;
|
||||
border: 1px solid var(--border);
|
||||
overflow: hidden;
|
||||
display: block;
|
||||
height: 130px;
|
||||
background: var(--soft);
|
||||
}
|
||||
|
||||
.hex-strip {
|
||||
background: #0f0f23;
|
||||
border-radius: 6px;
|
||||
padding: 8px 10px;
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.78rem;
|
||||
line-height: 1.6;
|
||||
color: #cbd5e1;
|
||||
overflow: hidden;
|
||||
}
|
||||
.hex-strip .magic { color: #fff; font-weight: 700; padding: 0 2px; border-radius: 2px; }
|
||||
.hex-strip.foto-magic .magic { background: var(--foto); }
|
||||
.hex-strip.audio-magic .magic { background: var(--audio); }
|
||||
.hex-strip.pdf-magic .magic { background: var(--pdf); }
|
||||
.hex-label {
|
||||
font-size: 0.68rem;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.1em;
|
||||
color: var(--muted);
|
||||
font-weight: 700;
|
||||
margin-bottom: 2px;
|
||||
}
|
||||
.magic-caption {
|
||||
font-size: 0.78rem;
|
||||
color: var(--muted);
|
||||
text-align: center;
|
||||
font-family: ui-monospace, monospace;
|
||||
}
|
||||
.magic-caption .magic-word {
|
||||
color: var(--dark);
|
||||
font-weight: 700;
|
||||
}
|
||||
|
||||
.verdict {
|
||||
margin-top: 26px;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.15rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.95rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Drei Dateien — dasselbe Innenleben</h1>
|
||||
<div class="sub">Außen <strong>völlig verschieden</strong>. Innen reden alle dieselbe Sprache: <strong>Byte für Byte</strong>.</div>
|
||||
|
||||
<div class="files">
|
||||
|
||||
<div class="file foto">
|
||||
<div class="file-head">
|
||||
<span class="file-name">Foto</span>
|
||||
<span class="file-ext">.png</span>
|
||||
</div>
|
||||
<svg class="preview" viewBox="0 0 220 130" preserveAspectRatio="xMidYMid slice">
|
||||
<defs>
|
||||
<linearGradient id="sky-f" x1="0" y1="0" x2="0" y2="1">
|
||||
<stop offset="0%" stop-color="#fde68a"/>
|
||||
<stop offset="60%" stop-color="#fb923c"/>
|
||||
<stop offset="100%" stop-color="#7c3aed"/>
|
||||
</linearGradient>
|
||||
</defs>
|
||||
<rect x="0" y="0" width="220" height="130" fill="url(#sky-f)"/>
|
||||
<circle cx="160" cy="50" r="18" fill="#fef3c7" opacity="0.95"/>
|
||||
<path d="M0,95 L40,80 L80,90 L120,72 L160,86 L220,75 L220,130 L0,130 Z" fill="#1e1b4b"/>
|
||||
<path d="M0,110 L60,100 L120,108 L180,98 L220,105 L220,130 L0,130 Z" fill="#0f172a" opacity="0.7"/>
|
||||
</svg>
|
||||
<div>
|
||||
<div class="hex-label">Erste Bytes der Datei</div>
|
||||
<div class="hex-strip foto-magic">
|
||||
<span class="magic">89 50 4E 47</span> 0D 0A 1A 0A 00 00 00 0D 49 48 44 52
|
||||
</div>
|
||||
</div>
|
||||
<div class="magic-caption"><span class="magic-word">50 4E 47</span> = <span class="magic-word">"PNG"</span></div>
|
||||
</div>
|
||||
|
||||
<div class="file audio">
|
||||
<div class="file-head">
|
||||
<span class="file-name">Sprachnachricht</span>
|
||||
<span class="file-ext">.mp3</span>
|
||||
</div>
|
||||
<svg class="preview" viewBox="0 0 220 130" preserveAspectRatio="none">
|
||||
<rect x="0" y="0" width="220" height="130" fill="#0f0f23"/>
|
||||
<line x1="0" y1="65" x2="220" y2="65" stroke="#374151" stroke-width="1"/>
|
||||
<path d="M0,65 L8,65 L12,55 L16,75 L20,40 L24,90 L28,30 L32,95 L36,35 L40,90
|
||||
L48,45 L56,82 L64,50 L72,78 L80,52 L88,75 L96,55 L104,72
|
||||
L116,58 L128,72 L140,60 L152,70 L168,62 L184,68 L200,64 L220,65
|
||||
L220,130 L0,130 Z" fill="#fb923c" stroke="#ea580c" stroke-width="1"/>
|
||||
</svg>
|
||||
<div>
|
||||
<div class="hex-label">Erste Bytes der Datei</div>
|
||||
<div class="hex-strip audio-magic">
|
||||
<span class="magic">49 44 33</span> 03 00 00 00 00 03 76 54 49 54 32 00 00
|
||||
</div>
|
||||
</div>
|
||||
<div class="magic-caption"><span class="magic-word">49 44 33</span> = <span class="magic-word">"ID3"</span></div>
|
||||
</div>
|
||||
|
||||
<div class="file pdf">
|
||||
<div class="file-head">
|
||||
<span class="file-name">PDF-Dokument</span>
|
||||
<span class="file-ext">.pdf</span>
|
||||
</div>
|
||||
<svg class="preview" viewBox="0 0 220 130" preserveAspectRatio="xMidYMid meet">
|
||||
<rect x="0" y="0" width="220" height="130" fill="#f8fafc"/>
|
||||
<rect x="50" y="14" width="120" height="102" rx="4" fill="#fff" stroke="#cbd5e1" stroke-width="1"/>
|
||||
<rect x="58" y="24" width="80" height="4" rx="1" fill="#7c3aed"/>
|
||||
<rect x="58" y="34" width="104" height="2" fill="#cbd5e1"/>
|
||||
<rect x="58" y="40" width="98" height="2" fill="#cbd5e1"/>
|
||||
<rect x="58" y="46" width="92" height="2" fill="#cbd5e1"/>
|
||||
<rect x="58" y="52" width="100" height="2" fill="#cbd5e1"/>
|
||||
<rect x="58" y="62" width="80" height="2" fill="#cbd5e1"/>
|
||||
<rect x="58" y="68" width="96" height="2" fill="#cbd5e1"/>
|
||||
<rect x="58" y="74" width="88" height="2" fill="#cbd5e1"/>
|
||||
<rect x="58" y="84" width="40" height="3" rx="1" fill="#7c3aed" opacity="0.7"/>
|
||||
<rect x="58" y="92" width="92" height="2" fill="#cbd5e1"/>
|
||||
<rect x="58" y="98" width="86" height="2" fill="#cbd5e1"/>
|
||||
<rect x="58" y="104" width="78" height="2" fill="#cbd5e1"/>
|
||||
</svg>
|
||||
<div>
|
||||
<div class="hex-label">Erste Bytes der Datei</div>
|
||||
<div class="hex-strip pdf-magic">
|
||||
<span class="magic">25 50 44 46</span> 2D 31 2E 37 0A 25 E2 E3 CF D3 0A 0A
|
||||
</div>
|
||||
</div>
|
||||
<div class="magic-caption"><span class="magic-word">25 50 44 46</span> = <span class="magic-word">"%PDF"</span></div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Drei verschiedene Dinge — eine Sprache.</div>
|
||||
<div class="verdict-a">Jede Datei beginnt mit ihrer <strong>Visitenkarte</strong> (Magic Number) und besteht ab da aus nichts als Byte. Foto, Audio, PDF — alle dieselben Bauteile, nur anders zusammengesetzt.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 77 KiB |
@@ -0,0 +1,206 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>JPEG-Pipeline — 6 Schritte vom Foto zur Datei</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--lossless-step: #2563eb;
|
||||
--lossy-step: #ea580c;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 28px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 26px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.pipeline {
|
||||
display: grid;
|
||||
grid-template-columns: 110px repeat(6, 1fr) 110px;
|
||||
gap: 4px;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
align-items: stretch;
|
||||
}
|
||||
|
||||
.endpoint {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
gap: 6px;
|
||||
text-align: center;
|
||||
}
|
||||
.endpoint-art { width: 88px; height: 60px; display: block; }
|
||||
.endpoint-label {
|
||||
font-size: 0.92rem;
|
||||
font-weight: 700;
|
||||
color: var(--dark);
|
||||
}
|
||||
.endpoint-size {
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.82rem;
|
||||
color: var(--muted);
|
||||
}
|
||||
|
||||
.step {
|
||||
border: 2px solid;
|
||||
border-radius: 8px;
|
||||
padding: 8px 6px;
|
||||
background: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
gap: 4px;
|
||||
text-align: center;
|
||||
}
|
||||
.step.lossless { border-color: var(--lossless-step); }
|
||||
.step.lossy { border-color: var(--lossy-step); }
|
||||
.step-num {
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.72rem;
|
||||
font-weight: 700;
|
||||
color: var(--muted);
|
||||
}
|
||||
.step-name {
|
||||
font-size: 0.78rem;
|
||||
font-weight: 700;
|
||||
line-height: 1.2;
|
||||
}
|
||||
.step.lossless .step-name { color: var(--lossless-step); }
|
||||
.step.lossy .step-name { color: var(--lossy-step); }
|
||||
.step-desc {
|
||||
font-size: 0.66rem;
|
||||
color: var(--muted);
|
||||
line-height: 1.3;
|
||||
}
|
||||
|
||||
.arrow {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
color: var(--muted);
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 1rem;
|
||||
}
|
||||
|
||||
.legend {
|
||||
margin-top: 16px;
|
||||
display: flex;
|
||||
justify-content: center;
|
||||
gap: 24px;
|
||||
font-size: 0.84rem;
|
||||
color: var(--dark);
|
||||
}
|
||||
.legend-item { display: flex; align-items: center; gap: 6px; }
|
||||
.legend-swatch {
|
||||
width: 14px;
|
||||
height: 14px;
|
||||
border-radius: 3px;
|
||||
display: inline-block;
|
||||
}
|
||||
.legend-swatch.lossless { background: var(--lossless-step); }
|
||||
.legend-swatch.lossy { background: var(--lossy-step); }
|
||||
|
||||
.verdict {
|
||||
margin-top: 22px;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>JPEG-Pipeline — 6 Schritte vom Foto zur Datei</h1>
|
||||
<div class="sub">Nur <strong>einer</strong> dieser Schritte verliert Information. Die anderen fünf sind verlustfrei.</div>
|
||||
|
||||
<div class="pipeline">
|
||||
|
||||
<div class="endpoint">
|
||||
<svg class="endpoint-art" viewBox="0 0 88 60">
|
||||
<defs>
|
||||
<linearGradient id="photo-grad" x1="0" y1="0" x2="0" y2="1">
|
||||
<stop offset="0%" stop-color="#fde68a"/>
|
||||
<stop offset="55%" stop-color="#fb923c"/>
|
||||
<stop offset="100%" stop-color="#7c3aed"/>
|
||||
</linearGradient>
|
||||
</defs>
|
||||
<rect x="0" y="0" width="88" height="60" rx="3" fill="url(#photo-grad)"/>
|
||||
<circle cx="66" cy="22" r="9" fill="#fef3c7"/>
|
||||
<path d="M0,42 L18,34 L40,40 L60,30 L80,38 L88,33 L88,60 L0,60 Z" fill="#1e1b4b"/>
|
||||
</svg>
|
||||
<div class="endpoint-label">Foto (Roh)</div>
|
||||
<div class="endpoint-size">~36 MB</div>
|
||||
</div>
|
||||
|
||||
<div class="step lossless">
|
||||
<div class="step-num">1</div>
|
||||
<div class="step-name">Farbraum</div>
|
||||
<div class="step-desc">RGB → Y'CbCr<br>Helligkeit von Farbe trennen</div>
|
||||
</div>
|
||||
|
||||
<div class="step lossy">
|
||||
<div class="step-num">2</div>
|
||||
<div class="step-name">Chroma-Subsampling</div>
|
||||
<div class="step-desc">Cb & Cr auf <strong>¼</strong><br>Auge sieht Farbe grob</div>
|
||||
</div>
|
||||
|
||||
<div class="step lossless">
|
||||
<div class="step-num">3</div>
|
||||
<div class="step-name">8×8 Blöcke</div>
|
||||
<div class="step-desc">Bild in Kacheln<br>jeder Block einzeln</div>
|
||||
</div>
|
||||
|
||||
<div class="step lossless">
|
||||
<div class="step-num">4</div>
|
||||
<div class="step-name">DCT</div>
|
||||
<div class="step-desc">Frequenz-Zerlegung<br>häufige Muster</div>
|
||||
</div>
|
||||
|
||||
<div class="step lossy">
|
||||
<div class="step-num">5</div>
|
||||
<div class="step-name">Quantisierung</div>
|
||||
<div class="step-desc"><strong>Hier</strong> wird weggeworfen<br>hohe Frequenzen raus</div>
|
||||
</div>
|
||||
|
||||
<div class="step lossless">
|
||||
<div class="step-num">6</div>
|
||||
<div class="step-name">Huffman</div>
|
||||
<div class="step-desc">Verlustfrei kürzen<br>häufig → kurz</div>
|
||||
</div>
|
||||
|
||||
<div class="endpoint">
|
||||
<svg class="endpoint-art" viewBox="0 0 88 60">
|
||||
<rect x="0" y="0" width="88" height="60" rx="3" fill="url(#photo-grad)"/>
|
||||
<circle cx="66" cy="22" r="9" fill="#fef3c7"/>
|
||||
<path d="M0,42 L18,34 L40,40 L60,30 L80,38 L88,33 L88,60 L0,60 Z" fill="#1e1b4b"/>
|
||||
</svg>
|
||||
<div class="endpoint-label">JPEG</div>
|
||||
<div class="endpoint-size">~3,5 MB</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="legend">
|
||||
<span class="legend-item"><span class="legend-swatch lossless"></span>verlustfrei (umkehrbar)</span>
|
||||
<span class="legend-item"><span class="legend-swatch lossy"></span>verlustbehaftet (Information weg)</span>
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Der <strong>Quanten-Schritt</strong> ist das ganze Geheimnis von JPEG.</div>
|
||||
<div class="verdict-a">Schritte 1, 3, 4, 6 verlieren nichts. Schritt 2 wirft Farb-Detail weg (Auge merkt nicht). Schritt 5 entscheidet — je nach Qualitäts-Stufe — wie viel <strong>Frequenz-Detail</strong> verloren geht. Niedrige Quality = aggressivere Schritt-5-Quantisierung.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 71 KiB |
@@ -0,0 +1,158 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Dieselbe Aufnahme, zwei Formate</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--lossless: #16a34a;
|
||||
--lossy: #ef4444;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 36px 48px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.85rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 28px; font-size: 1.05rem; }
|
||||
|
||||
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; max-width: 1200px; margin: 0 auto; }
|
||||
.panel { border: 2px solid var(--border); border-radius: 12px; padding: 22px 24px; display: flex; flex-direction: column; gap: 14px; background: #fff; }
|
||||
.panel.left { border-color: var(--lossless); }
|
||||
.panel.right { border-color: var(--lossy); }
|
||||
|
||||
.panel-head { display: flex; justify-content: space-between; align-items: baseline; }
|
||||
.panel-tag {
|
||||
font-size: 0.74rem;
|
||||
font-weight: 700;
|
||||
letter-spacing: 0.12em;
|
||||
text-transform: uppercase;
|
||||
color: var(--muted);
|
||||
}
|
||||
.panel-name { font-size: 1.5rem; font-weight: 700; }
|
||||
.panel.left .panel-name { color: var(--lossless); }
|
||||
.panel.right .panel-name { color: var(--lossy); }
|
||||
.panel-format {
|
||||
font-family: ui-monospace, "SF Mono", Menlo, monospace;
|
||||
font-size: 0.85rem;
|
||||
color: var(--muted);
|
||||
}
|
||||
|
||||
.waveform {
|
||||
background: #0f0f23;
|
||||
border-radius: 8px;
|
||||
padding: 6px;
|
||||
display: block;
|
||||
}
|
||||
|
||||
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
|
||||
.stat { background: var(--soft); border: 1px solid var(--border); border-radius: 7px; padding: 8px 12px; }
|
||||
.stat .label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 700; }
|
||||
.stat .value { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 1rem; font-weight: 700; color: var(--dark); margin-top: 2px; }
|
||||
|
||||
.verdict {
|
||||
margin-top: 26px;
|
||||
border: 2px solid var(--hl);
|
||||
background: #fff;
|
||||
border-radius: 12px;
|
||||
padding: 16px 22px;
|
||||
text-align: center;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
}
|
||||
.verdict-q { font-size: 1.2rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 1rem; color: var(--dark); margin-top: 6px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Dieselbe Aufnahme, zwei Formate</h1>
|
||||
<div class="sub">3 Sekunden Snare-Hit mit Cymbal-Tail · 44,1 kHz Sample-Rate · Stereo</div>
|
||||
|
||||
<div class="grid">
|
||||
|
||||
<div class="panel left">
|
||||
<div class="panel-head">
|
||||
<span class="panel-name">Lossless</span>
|
||||
<span class="panel-tag">FLAC</span>
|
||||
</div>
|
||||
<div class="panel-format">verlustfrei · alle Frequenzen 0–22 kHz erhalten</div>
|
||||
|
||||
<svg class="waveform" viewBox="0 0 800 160" preserveAspectRatio="none">
|
||||
<defs>
|
||||
<linearGradient id="green-grad" x1="0" y1="0" x2="0" y2="1">
|
||||
<stop offset="0%" stop-color="#34d399"/>
|
||||
<stop offset="100%" stop-color="#16a34a"/>
|
||||
</linearGradient>
|
||||
</defs>
|
||||
<line x1="0" y1="80" x2="800" y2="80" stroke="#374151" stroke-width="1"/>
|
||||
<!-- detailed waveform: transient peak + cymbal decay with high-freq noise -->
|
||||
<path d="M0,80
|
||||
L40,80 L42,78 L44,82 L46,74 L48,88
|
||||
L60,30 L62,135 L64,18 L66,142 L68,28 L70,128 L72,38 L74,118 L76,48 L78,108
|
||||
L90,55 L92,108 L94,52 L96,112 L98,58 L100,105 L102,62 L104,98 L106,68 L108,92
|
||||
L130,72 L132,92 L134,68 L136,94 L138,72 L140,90 L142,74 L144,88
|
||||
L170,76 L172,86 L174,74 L176,87 L178,76 L180,85
|
||||
L220,77 L222,84 L224,76 L226,85 L228,77 L230,83
|
||||
L280,78 L282,83 L284,77 L286,84 L288,78 L290,82
|
||||
L340,79 L342,82 L344,78 L346,82 L348,79 L350,81
|
||||
L400,79 L402,81 L404,79 L406,81 L408,79 L410,81
|
||||
L460,80 L462,81 L464,79 L466,81 L468,80 L470,80
|
||||
L520,80 L522,81 L524,79 L526,80
|
||||
L580,80 L582,80 L584,80
|
||||
L640,80 L700,80 L800,80 Z"
|
||||
fill="url(#green-grad)" stroke="#16a34a" stroke-width="1" opacity="0.95"/>
|
||||
</svg>
|
||||
|
||||
<div class="stats">
|
||||
<div class="stat"><div class="label">Dateigröße</div><div class="value">5,3 MB</div></div>
|
||||
<div class="stat"><div class="label">Bitrate</div><div class="value">1.411 kbit/s</div></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="panel right">
|
||||
<div class="panel-head">
|
||||
<span class="panel-name">Lossy</span>
|
||||
<span class="panel-tag">MP3 128 kbit/s</span>
|
||||
</div>
|
||||
<div class="panel-format">verlustbehaftet · hohe Frequenzen weggeworfen, Transienten geglättet</div>
|
||||
|
||||
<svg class="waveform" viewBox="0 0 800 160" preserveAspectRatio="none">
|
||||
<defs>
|
||||
<linearGradient id="red-grad" x1="0" y1="0" x2="0" y2="1">
|
||||
<stop offset="0%" stop-color="#fca5a5"/>
|
||||
<stop offset="100%" stop-color="#ef4444"/>
|
||||
</linearGradient>
|
||||
</defs>
|
||||
<line x1="0" y1="80" x2="800" y2="80" stroke="#374151" stroke-width="1"/>
|
||||
<!-- smoothed waveform: same overall shape, no fine detail in transient peak -->
|
||||
<path d="M0,80
|
||||
L40,80 L48,80
|
||||
L60,48 L65,120 L70,52 L75,115 L80,58 L85,108
|
||||
L100,68 L108,92 L114,70 L120,90
|
||||
L150,75 L160,86 L168,76 L174,85
|
||||
L200,77 L210,84 L220,77 L230,83
|
||||
L260,78 L280,82 L300,78 L320,82
|
||||
L360,79 L380,81 L400,79 L420,81
|
||||
L460,80 L480,80 L520,80
|
||||
L580,80 L640,80 L700,80 L800,80 Z"
|
||||
fill="url(#red-grad)" stroke="#ef4444" stroke-width="1" opacity="0.95"/>
|
||||
</svg>
|
||||
|
||||
<div class="stats">
|
||||
<div class="stat"><div class="label">Dateigröße</div><div class="value">0,48 MB</div></div>
|
||||
<div class="stat"><div class="label">Bitrate</div><div class="value">128 kbit/s</div></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Hört man den Unterschied?</div>
|
||||
<div class="verdict-a">Auf dem Smartphone-Lautsprecher: meist nicht. Im Studio-Monitor mit Kopfhörer: oft schon. — MP3 wirft <strong>91 % der Daten weg</strong>, die der Mensch im Alltag nicht vermisst.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 72 KiB |
@@ -0,0 +1,119 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Drei Modalitäten, ein Hebel</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--bild: #2563eb;
|
||||
--audio: #ea580c;
|
||||
--video: #7c3aed;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 32px 48px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.85rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 26px; font-size: 1.05rem; }
|
||||
|
||||
.table { display: grid; grid-template-columns: 140px 1fr 1fr 1fr; gap: 12px; max-width: 1180px; margin: 0 auto; align-items: stretch; }
|
||||
.col-head { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 700; color: var(--muted); padding: 0 8px 4px; }
|
||||
|
||||
.row-label { font-size: 1.15rem; font-weight: 700; padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; justify-content: center; border-radius: 10px; }
|
||||
.row-label.bild { background: #dbeafe; color: var(--bild); }
|
||||
.row-label.audio { background: #ffedd5; color: var(--audio); }
|
||||
.row-label.video { background: #ede9fe; color: var(--video); }
|
||||
.row-label small { font-size: 0.78rem; font-weight: 400; color: var(--muted); text-transform: none; letter-spacing: 0; }
|
||||
|
||||
.cell { border: 1.5px solid var(--border); border-radius: 10px; padding: 12px 14px; background: #fff; display: flex; flex-direction: column; gap: 8px; }
|
||||
.cell-format { font-family: ui-monospace, monospace; font-size: 0.85rem; color: var(--muted); }
|
||||
.cell-size { font-size: 1.7rem; font-weight: 700; color: var(--dark); font-family: ui-monospace, monospace; }
|
||||
.cell-bar { height: 8px; border-radius: 4px; background: var(--soft); position: relative; overflow: hidden; }
|
||||
.cell-bar .fill { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 4px; }
|
||||
|
||||
.verdict {
|
||||
margin-top: 22px;
|
||||
max-width: 1180px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
text-align: center;
|
||||
}
|
||||
.verdict-q { font-size: 1.05rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.95rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Drei Modalitäten — derselbe Hebel</h1>
|
||||
<div class="sub">Bild, Audio, Video schrumpfen alle dramatisch. Warum? Weil Wahrnehmung Lücken hat.</div>
|
||||
|
||||
<div class="table">
|
||||
<div></div>
|
||||
<div class="col-head">Roh</div>
|
||||
<div class="col-head">Lossy (modern)</div>
|
||||
<div class="col-head">Lossy (aggressiv)</div>
|
||||
|
||||
<div class="row-label bild">Bild<small>12-MP-Foto</small></div>
|
||||
<div class="cell">
|
||||
<div class="cell-format">RAW</div>
|
||||
<div class="cell-size">36 MB</div>
|
||||
<div class="cell-bar"><div class="fill" style="width:100%;background:#2563eb"></div></div>
|
||||
</div>
|
||||
<div class="cell">
|
||||
<div class="cell-format">JPEG · Q 90</div>
|
||||
<div class="cell-size">4 MB</div>
|
||||
<div class="cell-bar"><div class="fill" style="width:11%;background:#2563eb"></div></div>
|
||||
</div>
|
||||
<div class="cell">
|
||||
<div class="cell-format">JPEG · Q 50</div>
|
||||
<div class="cell-size">800 KB</div>
|
||||
<div class="cell-bar"><div class="fill" style="width:2.2%;background:#2563eb"></div></div>
|
||||
</div>
|
||||
|
||||
<div class="row-label audio">Audio<small>30 s Stereo</small></div>
|
||||
<div class="cell">
|
||||
<div class="cell-format">WAV · 44,1 kHz · 16 bit</div>
|
||||
<div class="cell-size">5,3 MB</div>
|
||||
<div class="cell-bar"><div class="fill" style="width:100%;background:#ea580c"></div></div>
|
||||
</div>
|
||||
<div class="cell">
|
||||
<div class="cell-format">MP3 · 192 kbit/s</div>
|
||||
<div class="cell-size">720 KB</div>
|
||||
<div class="cell-bar"><div class="fill" style="width:14%;background:#ea580c"></div></div>
|
||||
</div>
|
||||
<div class="cell">
|
||||
<div class="cell-format">MP3 · 64 kbit/s</div>
|
||||
<div class="cell-size">240 KB</div>
|
||||
<div class="cell-bar"><div class="fill" style="width:4.5%;background:#ea580c"></div></div>
|
||||
</div>
|
||||
|
||||
<div class="row-label video">Video<small>30 s · 4K · 30 fps</small></div>
|
||||
<div class="cell">
|
||||
<div class="cell-format">Roh · 8 bit</div>
|
||||
<div class="cell-size">12 GB</div>
|
||||
<div class="cell-bar"><div class="fill" style="width:100%;background:#7c3aed"></div></div>
|
||||
</div>
|
||||
<div class="cell">
|
||||
<div class="cell-format">H.264 · 25 Mbit/s</div>
|
||||
<div class="cell-size">94 MB</div>
|
||||
<div class="cell-bar"><div class="fill" style="width:0.8%;background:#7c3aed"></div></div>
|
||||
</div>
|
||||
<div class="cell">
|
||||
<div class="cell-format">H.265 · 12 Mbit/s</div>
|
||||
<div class="cell-size">45 MB</div>
|
||||
<div class="cell-bar"><div class="fill" style="width:0.4%;background:#7c3aed"></div></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Bilder schrumpfen ×45. Audio ×22. Video ×270.</div>
|
||||
<div class="verdict-a">Jede Reduktion nutzt eine andere Wahrnehmungs-Lücke: <strong>Bild</strong> die geringere Farbschärfe, <strong>Audio</strong> die Maskierung, <strong>Video</strong> die Frame-zu-Frame-Ähnlichkeit.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 75 KiB |
@@ -0,0 +1,182 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Die Reise einer Datei</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--slot1: #0891b2;
|
||||
--slot2: #2563eb;
|
||||
--slot3: #7c3aed;
|
||||
--slot4: #be185d;
|
||||
--slot5: #ea580c;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 32px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.85rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 30px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.journey {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr auto 1fr;
|
||||
gap: 6px;
|
||||
align-items: stretch;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
.station {
|
||||
border: 2px solid;
|
||||
border-radius: 10px;
|
||||
padding: 14px 12px 12px;
|
||||
background: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
gap: 4px;
|
||||
}
|
||||
.station.s1 { border-color: var(--slot1); }
|
||||
.station.s2 { border-color: var(--slot2); }
|
||||
.station.s3 { border-color: var(--slot3); }
|
||||
.station.s4 { border-color: var(--slot4); }
|
||||
.station.s5 { border-color: var(--slot5); }
|
||||
|
||||
.station-tag { font-size: 0.68rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); }
|
||||
.station-name { font-size: 1.05rem; font-weight: 700; text-align: center; line-height: 1.2; }
|
||||
.station.s1 .station-name { color: var(--slot1); }
|
||||
.station.s2 .station-name { color: var(--slot2); }
|
||||
.station.s3 .station-name { color: var(--slot3); }
|
||||
.station.s4 .station-name { color: var(--slot4); }
|
||||
.station.s5 .station-name { color: var(--slot5); }
|
||||
.station-detail { font-size: 0.78rem; color: var(--muted); text-align: center; }
|
||||
|
||||
.link {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
gap: 4px;
|
||||
padding: 0 4px;
|
||||
justify-content: center;
|
||||
}
|
||||
.link-rate {
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.88rem;
|
||||
font-weight: 700;
|
||||
color: var(--dark);
|
||||
white-space: nowrap;
|
||||
}
|
||||
.link-protocol {
|
||||
font-size: 0.7rem;
|
||||
color: var(--muted);
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.06em;
|
||||
}
|
||||
.link-arrow svg { width: 32px; height: 14px; }
|
||||
|
||||
.scenario {
|
||||
margin-top: 28px;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
background: var(--soft);
|
||||
border: 1.5px solid var(--border);
|
||||
border-radius: 10px;
|
||||
padding: 16px 22px;
|
||||
}
|
||||
.scenario-head { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 6px; }
|
||||
.scenario-body { font-size: 0.98rem; line-height: 1.55; }
|
||||
.scenario-body code { font-family: ui-monospace, monospace; background: #fff; padding: 1px 6px; border-radius: 4px; border: 1px solid var(--border); }
|
||||
|
||||
.verdict {
|
||||
margin-top: 18px;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.92rem; color: var(--dark); margin-top: 4px; }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Die Reise einer Datei</h1>
|
||||
<div class="sub">Ein 4K-Trailer (<strong>1,2 GB</strong>) reist von der externen SSD auf den Monitor — jede Etappe ist ein eigener Engpass.</div>
|
||||
|
||||
<div class="journey">
|
||||
<div class="station s1">
|
||||
<div class="station-tag">Quelle</div>
|
||||
<div class="station-name">SSD<br>extern</div>
|
||||
<div class="station-detail">NVMe-Stick</div>
|
||||
</div>
|
||||
|
||||
<div class="link">
|
||||
<div class="link-rate">3 200 MB/s</div>
|
||||
<svg class="link-arrow" viewBox="0 0 32 14"><path d="M2,7 L26,7 M22,2 L28,7 L22,12" stroke="#d63384" stroke-width="2" fill="none"/></svg>
|
||||
<div class="link-protocol">USB 4 / TB4</div>
|
||||
</div>
|
||||
|
||||
<div class="station s2">
|
||||
<div class="station-tag">Aufnahme</div>
|
||||
<div class="station-name">Laptop</div>
|
||||
<div class="station-detail">RAM & CPU</div>
|
||||
</div>
|
||||
|
||||
<div class="link">
|
||||
<div class="link-rate">~7 000 MB/s</div>
|
||||
<svg class="link-arrow" viewBox="0 0 32 14"><path d="M2,7 L26,7 M22,2 L28,7 L22,12" stroke="#d63384" stroke-width="2" fill="none"/></svg>
|
||||
<div class="link-protocol">PCIe 4.0</div>
|
||||
</div>
|
||||
|
||||
<div class="station s3">
|
||||
<div class="station-tag">Decoder</div>
|
||||
<div class="station-name">GPU</div>
|
||||
<div class="station-detail">H.264-Hardware</div>
|
||||
</div>
|
||||
|
||||
<div class="link">
|
||||
<div class="link-rate">2 200 MB/s</div>
|
||||
<svg class="link-arrow" viewBox="0 0 32 14"><path d="M2,7 L26,7 M22,2 L28,7 L22,12" stroke="#d63384" stroke-width="2" fill="none"/></svg>
|
||||
<div class="link-protocol">HDMI 2.1</div>
|
||||
</div>
|
||||
|
||||
<div class="station s4">
|
||||
<div class="station-tag">Display</div>
|
||||
<div class="station-name">4K-Monitor</div>
|
||||
<div class="station-detail">3840 × 2160</div>
|
||||
</div>
|
||||
|
||||
<div class="link">
|
||||
<div class="link-rate">visuell</div>
|
||||
<svg class="link-arrow" viewBox="0 0 32 14"><path d="M2,7 L26,7 M22,2 L28,7 L22,12" stroke="#d63384" stroke-width="2" fill="none"/></svg>
|
||||
<div class="link-protocol">Licht</div>
|
||||
</div>
|
||||
|
||||
<div class="station s5">
|
||||
<div class="station-tag">Ziel</div>
|
||||
<div class="station-name">Auge</div>
|
||||
<div class="station-detail">Bewusstsein</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="scenario">
|
||||
<div class="scenario-head">Was hier passiert</div>
|
||||
<div class="scenario-body">
|
||||
Die <code>1,2 GB</code> liegen verschlüsselt komprimiert auf dem Stick. Sie reisen über <strong>USB-C</strong> in den RAM, werden vom GPU <strong>dekodiert</strong> (H.264 → roher RGB-Strom), und über <strong>HDMI</strong> als unkomprimiertes Bild an den Monitor geschickt. Dort entstehen pro Sekunde 60 Bilder mit je rund <code>24 MB</code> — also <strong>1,4 GB/s an rohem Pixelstrom</strong>, der niemals als Datei vorliegt.
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Speicher und Schnittstelle sind keine zwei Themen — sie sind die zwei Seiten desselben Engpasses.</div>
|
||||
<div class="verdict-a">Wo Bytes wohnen entscheidet, wie schnell sie reisen können. Wo sie reisen entscheidet, wo sie wohnen müssen.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 89 KiB |
@@ -0,0 +1,254 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Eine Datei reist — und erzählt</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--visible: #2563eb;
|
||||
--hidden: #7c3aed;
|
||||
--transit: #ea580c;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 28px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.85rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 22px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.scene {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 1.2fr;
|
||||
gap: 22px;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
.panel {
|
||||
border: 2px solid;
|
||||
border-radius: 12px;
|
||||
padding: 16px 18px;
|
||||
background: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 10px;
|
||||
}
|
||||
.panel.visible { border-color: var(--visible); }
|
||||
.panel.hidden { border-color: var(--hidden); }
|
||||
|
||||
.panel-head { display: flex; justify-content: space-between; align-items: baseline; }
|
||||
.panel-tag {
|
||||
font-size: 0.7rem;
|
||||
font-weight: 700;
|
||||
letter-spacing: 0.12em;
|
||||
text-transform: uppercase;
|
||||
color: var(--muted);
|
||||
}
|
||||
.panel-name { font-size: 1.25rem; font-weight: 700; }
|
||||
.panel.visible .panel-name { color: var(--visible); }
|
||||
.panel.hidden .panel-name { color: var(--hidden); }
|
||||
|
||||
.photo {
|
||||
border-radius: 8px;
|
||||
overflow: hidden;
|
||||
border: 1px solid var(--border);
|
||||
display: block;
|
||||
}
|
||||
|
||||
.photo-meta {
|
||||
display: flex;
|
||||
justify-content: space-between;
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.78rem;
|
||||
color: var(--muted);
|
||||
padding: 0 2px;
|
||||
}
|
||||
|
||||
.exif-list {
|
||||
display: grid;
|
||||
grid-template-columns: 130px 1fr;
|
||||
gap: 4px 12px;
|
||||
font-size: 0.86rem;
|
||||
line-height: 1.4;
|
||||
}
|
||||
.exif-key {
|
||||
font-size: 0.7rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.08em;
|
||||
color: var(--muted);
|
||||
padding-top: 3px;
|
||||
}
|
||||
.exif-val { font-family: ui-monospace, monospace; color: var(--dark); }
|
||||
.exif-val.gps { color: var(--hl); font-weight: 700; }
|
||||
|
||||
.transit-strip {
|
||||
max-width: 1200px;
|
||||
margin: 18px auto 0;
|
||||
border: 2px solid var(--transit);
|
||||
border-radius: 12px;
|
||||
padding: 14px 18px;
|
||||
background: #fff;
|
||||
display: grid;
|
||||
grid-template-columns: auto 1fr;
|
||||
gap: 16px;
|
||||
align-items: center;
|
||||
}
|
||||
.transit-tag {
|
||||
font-size: 0.7rem;
|
||||
font-weight: 700;
|
||||
letter-spacing: 0.12em;
|
||||
text-transform: uppercase;
|
||||
color: var(--transit);
|
||||
writing-mode: vertical-rl;
|
||||
transform: rotate(180deg);
|
||||
text-align: center;
|
||||
}
|
||||
.transit-body { display: flex; flex-direction: column; gap: 8px; }
|
||||
.transit-route {
|
||||
display: flex;
|
||||
align-items: center;
|
||||
gap: 6px;
|
||||
font-size: 0.92rem;
|
||||
font-weight: 700;
|
||||
flex-wrap: wrap;
|
||||
}
|
||||
.hop {
|
||||
background: var(--soft);
|
||||
border: 1.5px solid var(--border);
|
||||
padding: 4px 10px;
|
||||
border-radius: 6px;
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.82rem;
|
||||
color: var(--dark);
|
||||
}
|
||||
.hop.origin { border-color: var(--visible); color: var(--visible); }
|
||||
.hop.dest { border-color: var(--visible); color: var(--visible); }
|
||||
.hop.edge { border-color: var(--transit); color: var(--transit); }
|
||||
.arrow { color: var(--muted); font-family: ui-monospace, monospace; }
|
||||
.transit-headers {
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.78rem;
|
||||
color: var(--muted);
|
||||
line-height: 1.5;
|
||||
}
|
||||
.transit-headers strong { color: var(--dark); }
|
||||
|
||||
.verdict {
|
||||
margin-top: 18px;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Eine Datei reist — und erzählt</h1>
|
||||
<div class="sub">Ein Smartphone-Foto geht von <strong>Stuttgart</strong> nach <strong>Tokyo</strong>. Was sieht der Empfänger — und was bekommt er noch dazu?</div>
|
||||
|
||||
<div class="scene">
|
||||
|
||||
<div class="panel visible">
|
||||
<div class="panel-head">
|
||||
<span class="panel-name">Inhalt</span>
|
||||
<span class="panel-tag">Was du siehst</span>
|
||||
</div>
|
||||
|
||||
<svg class="photo" viewBox="0 0 420 280" preserveAspectRatio="xMidYMid slice">
|
||||
<defs>
|
||||
<linearGradient id="sky" x1="0" y1="0" x2="0" y2="1">
|
||||
<stop offset="0%" stop-color="#fde68a"/>
|
||||
<stop offset="55%" stop-color="#fda4af"/>
|
||||
<stop offset="100%" stop-color="#9333ea"/>
|
||||
</linearGradient>
|
||||
<linearGradient id="hills" x1="0" y1="0" x2="0" y2="1">
|
||||
<stop offset="0%" stop-color="#312e81"/>
|
||||
<stop offset="100%" stop-color="#0f172a"/>
|
||||
</linearGradient>
|
||||
</defs>
|
||||
<rect x="0" y="0" width="420" height="280" fill="url(#sky)"/>
|
||||
<circle cx="320" cy="105" r="32" fill="#fff7ed" opacity="0.95"/>
|
||||
<path d="M0,200 L60,170 L110,185 L160,160 L210,178 L260,150 L310,172 L360,148 L420,168 L420,280 L0,280 Z" fill="url(#hills)"/>
|
||||
<path d="M0,225 L50,210 L100,222 L150,205 L200,220 L250,202 L300,218 L350,200 L420,215 L420,280 L0,280 Z" fill="#1e1b4b" opacity="0.7"/>
|
||||
<rect x="80" y="225" width="14" height="42" fill="#0f172a"/>
|
||||
<rect x="180" y="232" width="10" height="35" fill="#0f172a"/>
|
||||
<rect x="240" y="220" width="18" height="48" fill="#0f172a"/>
|
||||
<rect x="300" y="234" width="11" height="34" fill="#0f172a"/>
|
||||
<rect x="86" y="232" width="3" height="3" fill="#fbbf24"/>
|
||||
<rect x="188" y="240" width="2" height="2" fill="#fbbf24"/>
|
||||
<rect x="248" y="228" width="3" height="3" fill="#fbbf24"/>
|
||||
<rect x="307" y="240" width="2" height="2" fill="#fbbf24"/>
|
||||
</svg>
|
||||
|
||||
<div class="photo-meta">
|
||||
<span>HEIC · 4032 × 3024</span>
|
||||
<span>3,2 MB</span>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="panel hidden">
|
||||
<div class="panel-head">
|
||||
<span class="panel-name">Gepäck</span>
|
||||
<span class="panel-tag">Was die Datei über sich weiß</span>
|
||||
</div>
|
||||
|
||||
<div class="exif-list">
|
||||
<div class="exif-key">Kamera</div>
|
||||
<div class="exif-val">Apple iPhone 15 Pro · 24 mm · ƒ/1.78</div>
|
||||
|
||||
<div class="exif-key">Belichtung</div>
|
||||
<div class="exif-val">1/250 s · ISO 100 · EV 0</div>
|
||||
|
||||
<div class="exif-key">Aufgenommen</div>
|
||||
<div class="exif-val">2026-04-12 · 18:47:12 · +02:00</div>
|
||||
|
||||
<div class="exif-key">GPS</div>
|
||||
<div class="exif-val gps">48.7847° N · 9.1825° E · 248 m<br><span style="font-weight:400">(Stuttgart, Königstraße 28)</span></div>
|
||||
|
||||
<div class="exif-key">Software</div>
|
||||
<div class="exif-val">iOS 18.4.1 · HDR · Live Photo</div>
|
||||
|
||||
<div class="exif-key">Farbprofil</div>
|
||||
<div class="exif-val">Display P3</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="transit-strip">
|
||||
<div class="transit-tag">Weg</div>
|
||||
<div class="transit-body">
|
||||
<div class="transit-route">
|
||||
<span class="hop origin">Stuttgart</span>
|
||||
<span class="arrow">→</span>
|
||||
<span class="hop">DNS</span>
|
||||
<span class="arrow">→</span>
|
||||
<span class="hop">TLS 1.3</span>
|
||||
<span class="arrow">→</span>
|
||||
<span class="hop edge">CDN-Edge Tokyo</span>
|
||||
<span class="arrow">→</span>
|
||||
<span class="hop dest">Tokyo</span>
|
||||
</div>
|
||||
<div class="transit-headers">
|
||||
<strong>HTTP/3 200 OK</strong> · content-type: image/heic · content-length: 3 220 480 · <strong>RTT 47 ms</strong> · cache: HIT (Edge tok-7) · age: 312 s
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Eine Datei = Inhalt + Gepäck + Weg.</div>
|
||||
<div class="verdict-a"><strong>Inhalt</strong> sieht der Empfänger. <strong>Gepäck</strong> verrät, wer sie gemacht hat — und wo. <strong>Weg</strong> entscheidet, wie schnell sie ankommt. Drei Schichten, eine Datei.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 96 KiB |
@@ -0,0 +1,194 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>1 TB verkauft, 931 GB angezeigt — wo gehen die 69 GB hin?</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--marketing: #2563eb;
|
||||
--os: #ea580c;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 32px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 24px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.compare {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 80px 1fr;
|
||||
gap: 18px;
|
||||
max-width: 1100px;
|
||||
margin: 0 auto;
|
||||
align-items: stretch;
|
||||
}
|
||||
|
||||
.side {
|
||||
border: 2px solid;
|
||||
border-radius: 12px;
|
||||
padding: 18px 22px;
|
||||
background: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
gap: 10px;
|
||||
}
|
||||
.side.marketing { border-color: var(--marketing); }
|
||||
.side.os { border-color: var(--os); }
|
||||
|
||||
.side-tag {
|
||||
font-size: 0.72rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.12em;
|
||||
color: var(--muted);
|
||||
}
|
||||
.side.marketing .side-name { color: var(--marketing); }
|
||||
.side.os .side-name { color: var(--os); }
|
||||
.side-name { font-size: 1.15rem; font-weight: 700; }
|
||||
|
||||
.label-mock {
|
||||
background: var(--soft);
|
||||
border: 1.5px solid var(--border);
|
||||
border-radius: 8px;
|
||||
padding: 14px 22px;
|
||||
min-width: 240px;
|
||||
text-align: center;
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.85rem;
|
||||
color: var(--muted);
|
||||
line-height: 1.5;
|
||||
}
|
||||
.label-mock .big {
|
||||
font-family: system-ui, sans-serif;
|
||||
font-size: 2.2rem;
|
||||
font-weight: 900;
|
||||
display: block;
|
||||
color: var(--dark);
|
||||
line-height: 1.05;
|
||||
}
|
||||
.side.marketing .label-mock .big { color: var(--marketing); }
|
||||
.side.os .label-mock .big { color: var(--os); }
|
||||
.label-mock .small-line { font-size: 0.78rem; }
|
||||
|
||||
.formel {
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.85rem;
|
||||
color: var(--muted);
|
||||
text-align: center;
|
||||
line-height: 1.6;
|
||||
}
|
||||
.formel strong { color: var(--dark); }
|
||||
|
||||
.arrow-col {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
gap: 4px;
|
||||
color: var(--muted);
|
||||
}
|
||||
.arrow-col svg { display: block; }
|
||||
.arrow-col .why {
|
||||
font-size: 0.78rem;
|
||||
font-weight: 700;
|
||||
color: var(--hl);
|
||||
text-align: center;
|
||||
line-height: 1.25;
|
||||
}
|
||||
|
||||
.math-box {
|
||||
margin-top: 22px;
|
||||
max-width: 1100px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
background: var(--soft);
|
||||
border: 1.5px solid var(--border);
|
||||
border-radius: 10px;
|
||||
padding: 16px 22px;
|
||||
}
|
||||
.math-box-head { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin-bottom: 8px; }
|
||||
.math-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 22px; font-family: ui-monospace, monospace; font-size: 0.9rem; line-height: 1.6; }
|
||||
.math-grid .key { color: var(--muted); }
|
||||
.math-grid .val { color: var(--dark); font-weight: 700; }
|
||||
.math-grid .val.hl { color: var(--hl); }
|
||||
|
||||
.verdict {
|
||||
margin-top: 18px;
|
||||
max-width: 1100px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.05rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a code { font-family: ui-monospace, monospace; background: #fff; padding: 1px 5px; border-radius: 4px; border: 1px solid var(--border); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>„1 TB" gekauft — 931 GB im Finder. Wo sind die 69 GB hin?</h1>
|
||||
<div class="sub">Nirgendwo. Es sind <strong>dieselben Byte</strong>. Nur zwei Welten zählen anders.</div>
|
||||
|
||||
<div class="compare">
|
||||
|
||||
<div class="side marketing">
|
||||
<div class="side-tag">Auf der Verpackung</div>
|
||||
<div class="side-name">Marketing</div>
|
||||
<div class="label-mock">
|
||||
<span class="big">1 TB</span>
|
||||
<span class="small-line">externe SSD</span>
|
||||
</div>
|
||||
<div class="formel">
|
||||
1 TB = <strong>10<sup>12</sup></strong> Byte<br>
|
||||
= 1 000 000 000 000
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="arrow-col">
|
||||
<svg viewBox="0 0 60 30" width="56" height="30"><path d="M5,15 L48,15 M42,7 L52,15 L42,23" stroke="#d63384" stroke-width="2.5" fill="none"/></svg>
|
||||
<div class="why">geteilt durch<br>2<sup>30</sup></div>
|
||||
</div>
|
||||
|
||||
<div class="side os">
|
||||
<div class="side-tag">Im Finder · Explorer</div>
|
||||
<div class="side-name">Betriebssystem</div>
|
||||
<div class="label-mock">
|
||||
<span class="big">931 GB</span>
|
||||
<span class="small-line">eigentlich: 931 GiB</span>
|
||||
</div>
|
||||
<div class="formel">
|
||||
1 GiB = <strong>2<sup>30</sup></strong> Byte<br>
|
||||
= 1 073 741 824
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="math-box">
|
||||
<div class="math-box-head">Die Rechnung</div>
|
||||
<div class="math-grid">
|
||||
<span class="key">Marketing schreibt</span>
|
||||
<span class="val">1 TB = 1 000 000 000 000 Byte (Basis 10)</span>
|
||||
<span class="key">Betriebssystem rechnet</span>
|
||||
<span class="val">1 TiB = 1 099 511 627 776 Byte (Basis 2)</span>
|
||||
<span class="key">1 TB in GiB umrechnen</span>
|
||||
<span class="val hl">10<sup>12</sup> ÷ 2<sup>30</sup> ≈ 931,3 GiB — der Finder zeigt also „931 GB"</span>
|
||||
<span class="key">Was die Studis sehen</span>
|
||||
<span class="val">Etikett: GB · Anzeige: GB · Bedeutung: zwei verschiedene Dinge</span>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Es fehlt nichts. Es wird nur in zwei Sprachen gezählt.</div>
|
||||
<div class="verdict-a">Korrekt wären <code>GiB</code> (binär, 1024) und <code>GB</code> (dezimal, 1000). In der Realität verwenden beide Welten <code>GB</code> und meinen verschiedene Zahlen.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 91 KiB |
@@ -0,0 +1,232 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Nyquist-Shannon — wie oft muss man messen?</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--bad: #ef4444;
|
||||
--warn: #f59e0b;
|
||||
--good: #16a34a;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 28px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 22px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.cases {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 12px;
|
||||
max-width: 1180px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
.case {
|
||||
display: grid;
|
||||
grid-template-columns: 200px 1fr;
|
||||
gap: 18px;
|
||||
align-items: center;
|
||||
border: 2px solid;
|
||||
border-radius: 10px;
|
||||
padding: 10px 14px;
|
||||
background: #fff;
|
||||
}
|
||||
.case.bad { border-color: var(--bad); }
|
||||
.case.warn { border-color: var(--warn); }
|
||||
.case.good { border-color: var(--good); }
|
||||
|
||||
.case-meta { display: flex; flex-direction: column; gap: 4px; }
|
||||
.case-tag {
|
||||
font-size: 0.7rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.12em;
|
||||
color: var(--muted);
|
||||
}
|
||||
.case-name { font-size: 1.05rem; font-weight: 700; }
|
||||
.case.bad .case-name { color: var(--bad); }
|
||||
.case.warn .case-name { color: var(--warn); }
|
||||
.case.good .case-name { color: var(--good); }
|
||||
.case-rate { font-family: ui-monospace, monospace; font-size: 0.82rem; color: var(--dark); }
|
||||
.case-note { font-size: 0.78rem; color: var(--muted); line-height: 1.35; }
|
||||
|
||||
.plot { background: var(--soft); border-radius: 8px; }
|
||||
.plot svg { display: block; }
|
||||
|
||||
.verdict {
|
||||
margin-top: 20px;
|
||||
max-width: 1180px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.05rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.92rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
.verdict-a code { font-family: ui-monospace, monospace; background: var(--soft); padding: 1px 5px; border-radius: 4px; }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Nyquist-Shannon — wie oft müssen wir messen?</h1>
|
||||
<div class="sub">Dieselbe Welle, drei Sample-Raten. Eine fällt durch, eine reicht knapp, eine ist sicher.</div>
|
||||
|
||||
<div class="cases">
|
||||
|
||||
<div class="case bad">
|
||||
<div class="case-meta">
|
||||
<div class="case-tag">Zu wenig</div>
|
||||
<div class="case-name">Aliasing</div>
|
||||
<div class="case-rate">f<sub>s</sub> = 0,9 · f</div>
|
||||
<div class="case-note">Die Sample-Punkte sitzen auf der Welle — aber verbunden sehen sie aus wie eine <strong>ganz andere, langsamere</strong> Welle.</div>
|
||||
</div>
|
||||
<div class="plot">
|
||||
<svg viewBox="0 0 880 140" width="100%" height="140" preserveAspectRatio="none">
|
||||
<line x1="20" y1="70" x2="860" y2="70" stroke="#cbd5e1" stroke-width="1" stroke-dasharray="3,4"/>
|
||||
<path d="M 20,70 Q 46.25,-20 72.5,70 T 125,70 T 177.5,70 T 230,70 T 282.5,70 T 335,70 T 387.5,70 T 440,70 T 492.5,70 T 545,70 T 597.5,70 T 650,70 T 702.5,70 T 755,70 T 807.5,70 T 860,70"
|
||||
stroke="#cbd5e1" stroke-width="1.5" fill="none"/>
|
||||
<polyline points="20,70 136.7,41 253.4,25.7 370.1,31.2 486.8,54.9 603.5,85.8 720.2,109.2 836.9,114.2"
|
||||
stroke="#ef4444" stroke-width="2.5" fill="none"/>
|
||||
<circle cx="20" cy="70" r="5" fill="#ef4444"/>
|
||||
<circle cx="136.7" cy="41" r="5" fill="#ef4444"/>
|
||||
<circle cx="253.4" cy="25.7" r="5" fill="#ef4444"/>
|
||||
<circle cx="370.1" cy="31.2" r="5" fill="#ef4444"/>
|
||||
<circle cx="486.8" cy="54.9" r="5" fill="#ef4444"/>
|
||||
<circle cx="603.5" cy="85.8" r="5" fill="#ef4444"/>
|
||||
<circle cx="720.2" cy="109.2" r="5" fill="#ef4444"/>
|
||||
<circle cx="836.9" cy="114.2" r="5" fill="#ef4444"/>
|
||||
</svg>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="case warn">
|
||||
<div class="case-meta">
|
||||
<div class="case-tag">Genau</div>
|
||||
<div class="case-name">Nyquist-Grenze</div>
|
||||
<div class="case-rate">f<sub>s</sub> = 2 · f</div>
|
||||
<div class="case-note">Sample exakt auf <strong>Peak und Tal</strong>. Mathematisch reicht das — visuell sieht es kaputt aus.</div>
|
||||
</div>
|
||||
<div class="plot">
|
||||
<svg viewBox="0 0 880 140" width="100%" height="140" preserveAspectRatio="none">
|
||||
<line x1="20" y1="70" x2="860" y2="70" stroke="#cbd5e1" stroke-width="1" stroke-dasharray="3,4"/>
|
||||
<path d="M 20,70 Q 46.25,-20 72.5,70 T 125,70 T 177.5,70 T 230,70 T 282.5,70 T 335,70 T 387.5,70 T 440,70 T 492.5,70 T 545,70 T 597.5,70 T 650,70 T 702.5,70 T 755,70 T 807.5,70 T 860,70"
|
||||
stroke="#cbd5e1" stroke-width="1.5" fill="none"/>
|
||||
<polyline points="46.25,25 98.75,115 151.25,25 203.75,115 256.25,25 308.75,115 361.25,25 413.75,115 466.25,25 518.75,115 571.25,25 623.75,115 676.25,25 728.75,115 781.25,25 833.75,115"
|
||||
stroke="#f59e0b" stroke-width="2" fill="none" opacity="0.5"/>
|
||||
<circle cx="46.25" cy="25" r="5" fill="#f59e0b"/>
|
||||
<circle cx="98.75" cy="115" r="5" fill="#f59e0b"/>
|
||||
<circle cx="151.25" cy="25" r="5" fill="#f59e0b"/>
|
||||
<circle cx="203.75" cy="115" r="5" fill="#f59e0b"/>
|
||||
<circle cx="256.25" cy="25" r="5" fill="#f59e0b"/>
|
||||
<circle cx="308.75" cy="115" r="5" fill="#f59e0b"/>
|
||||
<circle cx="361.25" cy="25" r="5" fill="#f59e0b"/>
|
||||
<circle cx="413.75" cy="115" r="5" fill="#f59e0b"/>
|
||||
<circle cx="466.25" cy="25" r="5" fill="#f59e0b"/>
|
||||
<circle cx="518.75" cy="115" r="5" fill="#f59e0b"/>
|
||||
<circle cx="571.25" cy="25" r="5" fill="#f59e0b"/>
|
||||
<circle cx="623.75" cy="115" r="5" fill="#f59e0b"/>
|
||||
<circle cx="676.25" cy="25" r="5" fill="#f59e0b"/>
|
||||
<circle cx="728.75" cy="115" r="5" fill="#f59e0b"/>
|
||||
<circle cx="781.25" cy="25" r="5" fill="#f59e0b"/>
|
||||
<circle cx="833.75" cy="115" r="5" fill="#f59e0b"/>
|
||||
</svg>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="case good">
|
||||
<div class="case-meta">
|
||||
<div class="case-tag">Sicher</div>
|
||||
<div class="case-name">Überabtastung</div>
|
||||
<div class="case-rate">f<sub>s</sub> = 8 · f</div>
|
||||
<div class="case-note">Genug Punkte — die Welle wird Punkt für Punkt nachgezeichnet. So macht es eine CD.</div>
|
||||
</div>
|
||||
<div class="plot">
|
||||
<svg viewBox="0 0 880 140" width="100%" height="140" preserveAspectRatio="none">
|
||||
<line x1="20" y1="70" x2="860" y2="70" stroke="#cbd5e1" stroke-width="1" stroke-dasharray="3,4"/>
|
||||
<path d="M 20,70 Q 46.25,-20 72.5,70 T 125,70 T 177.5,70 T 230,70 T 282.5,70 T 335,70 T 387.5,70 T 440,70 T 492.5,70 T 545,70 T 597.5,70 T 650,70 T 702.5,70 T 755,70 T 807.5,70 T 860,70"
|
||||
stroke="#16a34a" stroke-width="2.5" fill="none" opacity="0.9"/>
|
||||
<circle cx="20" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="33.1" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="46.2" cy="25" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="59.4" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="72.5" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="85.6" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="98.8" cy="115" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="111.9" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="125" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="138.1" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="151.2" cy="25" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="164.4" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="177.5" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="190.6" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="203.8" cy="115" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="216.9" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="230" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="243.1" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="256.2" cy="25" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="269.4" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="282.5" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="295.6" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="308.8" cy="115" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="321.9" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="335" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="348.1" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="361.2" cy="25" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="374.4" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="387.5" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="400.6" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="413.8" cy="115" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="426.9" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="440" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="453.1" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="466.2" cy="25" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="479.4" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="492.5" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="505.6" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="518.8" cy="115" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="531.9" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="545" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="558.1" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="571.2" cy="25" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="584.4" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="597.5" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="610.6" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="623.8" cy="115" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="636.9" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="650" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="663.1" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="676.2" cy="25" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="689.4" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="702.5" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="715.6" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="728.8" cy="115" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="741.9" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="755" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="768.1" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="781.2" cy="25" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="794.4" cy="38.2" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="807.5" cy="70" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="820.6" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="833.8" cy="115" r="2.5" fill="#16a34a"/>
|
||||
<circle cx="846.9" cy="101.8" r="2.5" fill="#16a34a"/>
|
||||
</svg>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">f<sub>s</sub> ≥ 2 · f<sub>max</sub>. So einfach. So endgültig.</div>
|
||||
<div class="verdict-a">Das Ohr hört bis <strong>20 kHz</strong>. 2 × 20 = 40 kHz. Die CD nimmt <code>44,1 kHz</code> — die 4,1 sind Sicherheits-Marge.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 140 KiB |
@@ -0,0 +1,173 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Wir haben gelernt zu lesen — jetzt: wie kommt es rein?</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--done: #94a3b8;
|
||||
--next: #d63384;
|
||||
--bytes: #0891b2;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 32px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.7rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 36px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.pivot {
|
||||
display: grid;
|
||||
grid-template-columns: 200px 1fr 240px 1fr 200px;
|
||||
gap: 8px;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
align-items: center;
|
||||
}
|
||||
|
||||
.station {
|
||||
border: 2px solid var(--border);
|
||||
border-radius: 12px;
|
||||
padding: 18px 14px;
|
||||
background: #fff;
|
||||
text-align: center;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
gap: 10px;
|
||||
}
|
||||
.station.bytes { border-color: var(--bytes); background: #0f0f23; color: #fff; }
|
||||
.station-tag {
|
||||
font-size: 0.7rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.12em;
|
||||
color: var(--muted);
|
||||
}
|
||||
.station.bytes .station-tag { color: #94a3b8; }
|
||||
.station-name { font-size: 1.3rem; font-weight: 700; }
|
||||
.station.bytes .station-name { color: #67e8f9; }
|
||||
.station-detail { font-size: 0.85rem; color: var(--muted); }
|
||||
.station.bytes .station-detail { color: #94a3b8; font-family: ui-monospace, monospace; font-size: 0.78rem; line-height: 1.4; }
|
||||
|
||||
.station-art { display: flex; align-items: center; justify-content: center; height: 70px; }
|
||||
.station-art svg { width: 80%; height: 100%; }
|
||||
|
||||
.strang {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
gap: 6px;
|
||||
padding: 0 6px;
|
||||
}
|
||||
.strang-arrow svg { display: block; width: 100%; height: 28px; }
|
||||
.strang-label {
|
||||
font-size: 0.95rem;
|
||||
font-weight: 700;
|
||||
text-align: center;
|
||||
line-height: 1.3;
|
||||
}
|
||||
.strang.next .strang-label { color: var(--next); }
|
||||
.strang.done .strang-label { color: var(--done); text-decoration: line-through; text-decoration-color: var(--done); text-decoration-thickness: 1.5px; }
|
||||
.strang-tag {
|
||||
font-size: 0.72rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.12em;
|
||||
text-align: center;
|
||||
}
|
||||
.strang.next .strang-tag { color: var(--next); }
|
||||
.strang.done .strang-tag { color: var(--done); }
|
||||
|
||||
.verdict {
|
||||
margin-top: 28px;
|
||||
max-width: 1100px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.95rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Wir haben gelernt zu <strong>lesen</strong>. Jetzt: wie kommt es <strong>rein</strong>?</h1>
|
||||
<div class="sub">Die rechte Seite haben wir abgearbeitet. Die linke ist die nächste Stunde.</div>
|
||||
|
||||
<div class="pivot">
|
||||
|
||||
<div class="station">
|
||||
<div class="station-tag">Quelle</div>
|
||||
<div class="station-name">Welt</div>
|
||||
<div class="station-art">
|
||||
<svg viewBox="0 0 120 70" preserveAspectRatio="xMidYMid meet">
|
||||
<path d="M5,35 Q15,10 25,35 T45,35 T65,35 T85,35 T105,35 T115,35"
|
||||
stroke="#d63384" stroke-width="2.5" fill="none"/>
|
||||
<circle cx="115" cy="35" r="3" fill="#d63384"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="station-detail">Schallwelle · Lichtwelle<br>kontinuierlich · analog</div>
|
||||
</div>
|
||||
|
||||
<div class="strang next">
|
||||
<div class="strang-tag">jetzt dran</div>
|
||||
<div class="strang-arrow">
|
||||
<svg viewBox="0 0 220 28" preserveAspectRatio="none">
|
||||
<line x1="6" y1="14" x2="200" y2="14" stroke="#d63384" stroke-width="2.5"/>
|
||||
<path d="M195,7 L208,14 L195,21" stroke="#d63384" stroke-width="2.5" fill="none"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="strang-label">Sampling + Quantisierung</div>
|
||||
</div>
|
||||
|
||||
<div class="station bytes">
|
||||
<div class="station-tag">Mitte</div>
|
||||
<div class="station-name">Datei</div>
|
||||
<div class="station-detail">
|
||||
89 50 4E 47<br>
|
||||
0D 0A 1A 0A<br>
|
||||
00 00 00 0D
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="strang done">
|
||||
<div class="strang-tag">schon durch</div>
|
||||
<div class="strang-arrow">
|
||||
<svg viewBox="0 0 220 28" preserveAspectRatio="none">
|
||||
<line x1="6" y1="14" x2="200" y2="14" stroke="#94a3b8" stroke-width="2"/>
|
||||
<path d="M195,7 L208,14 L195,21" stroke="#94a3b8" stroke-width="2" fill="none"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="strang-label">Notation · Encoding · Format</div>
|
||||
</div>
|
||||
|
||||
<div class="station">
|
||||
<div class="station-tag">Ziel</div>
|
||||
<div class="station-name">Mensch</div>
|
||||
<div class="station-art">
|
||||
<svg viewBox="0 0 120 70" preserveAspectRatio="xMidYMid meet">
|
||||
<rect x="14" y="14" width="92" height="14" rx="2" fill="#1a1a2e"/>
|
||||
<rect x="14" y="34" width="68" height="6" rx="1" fill="#cbd5e1"/>
|
||||
<rect x="14" y="44" width="78" height="6" rx="1" fill="#cbd5e1"/>
|
||||
<rect x="14" y="54" width="56" height="6" rx="1" fill="#cbd5e1"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="station-detail">Text · Bild · Klang<br>Bedeutung</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Die Datei ist die Mitte. Beide Wege führen durch sie hindurch.</div>
|
||||
<div class="verdict-a"><strong>Rechts:</strong> aus Byte wird Bedeutung — gerade gelernt. <strong>Links:</strong> aus Welt wird Byte — jetzt.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 60 KiB |
@@ -0,0 +1,159 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Psychoakustik — was MP3 weglässt</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--kept: #16a34a;
|
||||
--tossed: #94a3b8;
|
||||
--masker: #2563eb;
|
||||
--threshold: #ea580c;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 30px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 22px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.chart-wrap {
|
||||
max-width: 1180px;
|
||||
margin: 0 auto;
|
||||
background: #fff;
|
||||
border: 1.5px solid var(--border);
|
||||
border-radius: 12px;
|
||||
padding: 16px 20px;
|
||||
}
|
||||
.chart-head {
|
||||
display: flex;
|
||||
justify-content: space-between;
|
||||
align-items: baseline;
|
||||
margin-bottom: 8px;
|
||||
}
|
||||
.chart-title { font-size: 1rem; font-weight: 700; }
|
||||
.legend {
|
||||
display: flex;
|
||||
gap: 16px;
|
||||
font-size: 0.78rem;
|
||||
color: var(--muted);
|
||||
}
|
||||
.legend-item { display: flex; align-items: center; gap: 4px; }
|
||||
.legend-swatch {
|
||||
width: 14px;
|
||||
height: 14px;
|
||||
border-radius: 3px;
|
||||
display: inline-block;
|
||||
}
|
||||
.legend-swatch.kept { background: var(--kept); }
|
||||
.legend-swatch.tossed { background: var(--tossed); }
|
||||
.legend-swatch.masker { background: var(--masker); }
|
||||
.legend-swatch.threshold {
|
||||
background: transparent;
|
||||
border-top: 2px dashed var(--threshold);
|
||||
height: 8px;
|
||||
margin-top: 5px;
|
||||
}
|
||||
|
||||
.verdict {
|
||||
margin-top: 22px;
|
||||
max-width: 1180px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Psychoakustik — was MP3 wegwirft</h1>
|
||||
<div class="sub">Ein lauter Ton macht leise Nachbarn <strong>unhörbar</strong>. Was nicht hörbar ist, muss man nicht speichern.</div>
|
||||
|
||||
<div class="chart-wrap">
|
||||
<div class="chart-head">
|
||||
<div class="chart-title">Lautstärke (dB SPL) über Frequenz (Hz, logarithmisch)</div>
|
||||
<div class="legend">
|
||||
<span class="legend-item"><span class="legend-swatch masker"></span>lauter Ton (Masker)</span>
|
||||
<span class="legend-item"><span class="legend-swatch kept"></span>hörbar · bleibt</span>
|
||||
<span class="legend-item"><span class="legend-swatch tossed"></span>maskiert · raus</span>
|
||||
<span class="legend-item"><span class="legend-swatch threshold"></span>Hörschwelle</span>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<svg viewBox="0 0 1100 380" width="100%" height="380">
|
||||
<line x1="80" y1="340" x2="1060" y2="340" stroke="#1a1a2e" stroke-width="1.5"/>
|
||||
<line x1="80" y1="20" x2="80" y2="340" stroke="#1a1a2e" stroke-width="1.5"/>
|
||||
|
||||
<text x="20" y="30" font-size="11" fill="#6b7280">dB</text>
|
||||
<text x="40" y="50" font-size="10" fill="#6b7280" text-anchor="end">100</text>
|
||||
<text x="40" y="125" font-size="10" fill="#6b7280" text-anchor="end">75</text>
|
||||
<text x="40" y="200" font-size="10" fill="#6b7280" text-anchor="end">50</text>
|
||||
<text x="40" y="275" font-size="10" fill="#6b7280" text-anchor="end">25</text>
|
||||
<text x="40" y="345" font-size="10" fill="#6b7280" text-anchor="end">0</text>
|
||||
|
||||
<line x1="75" y1="50" x2="80" y2="50" stroke="#1a1a2e"/>
|
||||
<line x1="75" y1="125" x2="80" y2="125" stroke="#1a1a2e"/>
|
||||
<line x1="75" y1="200" x2="80" y2="200" stroke="#1a1a2e"/>
|
||||
<line x1="75" y1="275" x2="80" y2="275" stroke="#1a1a2e"/>
|
||||
|
||||
<text x="100" y="360" font-size="10" fill="#6b7280">20</text>
|
||||
<text x="260" y="360" font-size="10" fill="#6b7280">100</text>
|
||||
<text x="420" y="360" font-size="10" fill="#6b7280">500</text>
|
||||
<text x="580" y="360" font-size="10" fill="#6b7280">1k</text>
|
||||
<text x="740" y="360" font-size="10" fill="#6b7280">5k</text>
|
||||
<text x="900" y="360" font-size="10" fill="#6b7280">10k</text>
|
||||
<text x="1040" y="360" font-size="10" fill="#6b7280">20k</text>
|
||||
<text x="540" y="378" font-size="11" fill="#6b7280" text-anchor="middle">Frequenz [Hz]</text>
|
||||
|
||||
<path d="M100,80 Q170,130 260,200 Q350,290 420,310 Q500,335 580,330 Q670,310 740,295 Q820,280 900,250 Q970,200 1040,80"
|
||||
stroke="#ea580c" stroke-width="2" stroke-dasharray="5,5" fill="none"/>
|
||||
|
||||
<path d="M460,340 L460,210 Q480,165 580,80 Q680,165 700,210 L700,340 Z"
|
||||
fill="#2563eb" opacity="0.15"/>
|
||||
<path d="M460,340 L460,210 Q480,165 580,80 Q680,165 700,210 L700,340"
|
||||
stroke="#2563eb" stroke-width="2" fill="none" stroke-dasharray="2,3"/>
|
||||
|
||||
<rect x="572" y="80" width="16" height="260" fill="#2563eb"/>
|
||||
|
||||
<circle cx="240" cy="270" r="6" fill="#16a34a"/>
|
||||
<text x="240" y="260" font-size="10" fill="#16a34a" text-anchor="middle" font-weight="700">bleibt</text>
|
||||
|
||||
<circle cx="420" cy="240" r="6" fill="#16a34a"/>
|
||||
<text x="420" y="230" font-size="10" fill="#16a34a" text-anchor="middle" font-weight="700">bleibt</text>
|
||||
|
||||
<circle cx="510" cy="180" r="6" fill="#94a3b8"/>
|
||||
<text x="510" y="170" font-size="10" fill="#94a3b8" text-anchor="middle">raus</text>
|
||||
|
||||
<circle cx="660" cy="200" r="6" fill="#94a3b8"/>
|
||||
<text x="660" y="190" font-size="10" fill="#94a3b8" text-anchor="middle">raus</text>
|
||||
|
||||
<circle cx="640" cy="155" r="6" fill="#94a3b8"/>
|
||||
<text x="640" y="145" font-size="10" fill="#94a3b8" text-anchor="middle">raus</text>
|
||||
|
||||
<circle cx="860" cy="220" r="6" fill="#16a34a"/>
|
||||
<text x="860" y="210" font-size="10" fill="#16a34a" text-anchor="middle" font-weight="700">bleibt</text>
|
||||
|
||||
<circle cx="960" cy="170" r="6" fill="#16a34a"/>
|
||||
<text x="960" y="160" font-size="10" fill="#16a34a" text-anchor="middle" font-weight="700">bleibt</text>
|
||||
|
||||
<text x="595" y="76" font-size="11" fill="#2563eb" font-weight="700">1 kHz · 90 dB · "Masker"</text>
|
||||
<text x="780" y="105" font-size="11" fill="#ea580c" font-weight="700">Hörschwelle (in Ruhe)</text>
|
||||
<text x="540" y="160" font-size="11" fill="#2563eb" font-weight="700" text-anchor="middle">Maskierungs-Bereich</text>
|
||||
</svg>
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">MP3 kodiert nur, was über der <strong>kombinierten Schwelle</strong> liegt.</div>
|
||||
<div class="verdict-a">Alles unterhalb wird weggeworfen — das Ohr hört es ohnehin nicht. So spart MP3 typischerweise <strong>~90 % der Daten</strong>, ohne dass der Mensch im Alltag etwas vermisst.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 77 KiB |
@@ -0,0 +1,222 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Psychovisualität — Luminanz vor Chrominanz</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--full: #2563eb;
|
||||
--reduced: #7c3aed;
|
||||
--y: #1a1a2e;
|
||||
--cb: #2563eb;
|
||||
--cr: #ef4444;
|
||||
--bar-bg: #e2e8f0;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 30px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 24px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.compare {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 1fr;
|
||||
gap: 22px;
|
||||
max-width: 1180px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
.col {
|
||||
border: 2px solid;
|
||||
border-radius: 12px;
|
||||
padding: 16px 20px;
|
||||
background: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 12px;
|
||||
}
|
||||
.col.full { border-color: var(--full); }
|
||||
.col.reduced { border-color: var(--reduced); }
|
||||
|
||||
.col-head { display: flex; justify-content: space-between; align-items: baseline; }
|
||||
.col-tag {
|
||||
font-size: 0.72rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.12em;
|
||||
color: var(--muted);
|
||||
}
|
||||
.col-name { font-size: 1.25rem; font-weight: 700; }
|
||||
.col.full .col-name { color: var(--full); }
|
||||
.col.reduced .col-name { color: var(--reduced); }
|
||||
.col-format {
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.82rem;
|
||||
color: var(--muted);
|
||||
}
|
||||
|
||||
.preview {
|
||||
border-radius: 8px;
|
||||
overflow: hidden;
|
||||
border: 1px solid var(--border);
|
||||
}
|
||||
.preview svg { display: block; }
|
||||
|
||||
.channels {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 6px;
|
||||
}
|
||||
.channel { display: grid; grid-template-columns: 90px 1fr 60px; gap: 8px; align-items: center; font-size: 0.85rem; }
|
||||
.channel-label {
|
||||
font-family: ui-monospace, monospace;
|
||||
font-weight: 700;
|
||||
}
|
||||
.channel-bar { height: 14px; background: var(--bar-bg); border-radius: 3px; overflow: hidden; }
|
||||
.channel-bar .fill { height: 100%; border-radius: 3px; }
|
||||
.channel-bar .fill.y { background: var(--y); }
|
||||
.channel-bar .fill.cb { background: var(--cb); }
|
||||
.channel-bar .fill.cr { background: var(--cr); }
|
||||
.channel-pct {
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.78rem;
|
||||
color: var(--muted);
|
||||
text-align: right;
|
||||
}
|
||||
|
||||
.summary-line {
|
||||
display: flex;
|
||||
justify-content: space-between;
|
||||
background: var(--soft);
|
||||
border-radius: 6px;
|
||||
padding: 6px 12px;
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.85rem;
|
||||
color: var(--dark);
|
||||
}
|
||||
.summary-line strong { color: var(--hl); }
|
||||
|
||||
.verdict {
|
||||
margin-top: 22px;
|
||||
max-width: 1180px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Psychovisualität — Luminanz vor Chrominanz</h1>
|
||||
<div class="sub">Das Auge sieht <strong>Helligkeit</strong> scharf. <strong>Farbe</strong> darf grob bleiben — und das Bild sieht trotzdem identisch aus.</div>
|
||||
|
||||
<div class="compare">
|
||||
|
||||
<div class="col full">
|
||||
<div class="col-head">
|
||||
<span class="col-name">Ohne Subsampling</span>
|
||||
<span class="col-tag">4:4:4</span>
|
||||
</div>
|
||||
<div class="col-format">jedes Pixel speichert Y · Cb · Cr in voller Auflösung</div>
|
||||
|
||||
<svg class="preview" viewBox="0 0 320 130" preserveAspectRatio="xMidYMid slice">
|
||||
<defs>
|
||||
<linearGradient id="full-sky" x1="0" y1="0" x2="0" y2="1">
|
||||
<stop offset="0%" stop-color="#fde68a"/>
|
||||
<stop offset="55%" stop-color="#fb923c"/>
|
||||
<stop offset="100%" stop-color="#7c3aed"/>
|
||||
</linearGradient>
|
||||
</defs>
|
||||
<rect x="0" y="0" width="320" height="130" fill="url(#full-sky)"/>
|
||||
<circle cx="230" cy="50" r="22" fill="#fef3c7"/>
|
||||
<path d="M0,90 L40,75 L90,87 L140,68 L190,82 L240,66 L290,80 L320,72 L320,130 L0,130 Z" fill="#1e1b4b"/>
|
||||
<path d="M0,108 L60,100 L120,108 L180,98 L240,106 L300,98 L320,103 L320,130 L0,130 Z" fill="#0f172a" opacity="0.7"/>
|
||||
</svg>
|
||||
|
||||
<div class="channels">
|
||||
<div class="channel">
|
||||
<span class="channel-label">Y</span>
|
||||
<div class="channel-bar"><div class="fill y" style="width:100%"></div></div>
|
||||
<span class="channel-pct">100 %</span>
|
||||
</div>
|
||||
<div class="channel">
|
||||
<span class="channel-label">Cb</span>
|
||||
<div class="channel-bar"><div class="fill cb" style="width:100%"></div></div>
|
||||
<span class="channel-pct">100 %</span>
|
||||
</div>
|
||||
<div class="channel">
|
||||
<span class="channel-label">Cr</span>
|
||||
<div class="channel-bar"><div class="fill cr" style="width:100%"></div></div>
|
||||
<span class="channel-pct">100 %</span>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="summary-line">
|
||||
<span>Datenmenge:</span>
|
||||
<span><strong>100 %</strong></span>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="col reduced">
|
||||
<div class="col-head">
|
||||
<span class="col-name">JPEG · H.264 Standard</span>
|
||||
<span class="col-tag">4:2:0</span>
|
||||
</div>
|
||||
<div class="col-format">Y voll · Cb & Cr nur in 2×2-Pixel-Blöcken</div>
|
||||
|
||||
<svg class="preview" viewBox="0 0 320 130" preserveAspectRatio="xMidYMid slice">
|
||||
<defs>
|
||||
<linearGradient id="red-sky" x1="0" y1="0" x2="0" y2="1">
|
||||
<stop offset="0%" stop-color="#fde68a"/>
|
||||
<stop offset="55%" stop-color="#fb923c"/>
|
||||
<stop offset="100%" stop-color="#7c3aed"/>
|
||||
</linearGradient>
|
||||
</defs>
|
||||
<rect x="0" y="0" width="320" height="130" fill="url(#red-sky)"/>
|
||||
<circle cx="230" cy="50" r="22" fill="#fef3c7"/>
|
||||
<path d="M0,90 L40,75 L90,87 L140,68 L190,82 L240,66 L290,80 L320,72 L320,130 L0,130 Z" fill="#1e1b4b"/>
|
||||
<path d="M0,108 L60,100 L120,108 L180,98 L240,106 L300,98 L320,103 L320,130 L0,130 Z" fill="#0f172a" opacity="0.7"/>
|
||||
</svg>
|
||||
|
||||
<div class="channels">
|
||||
<div class="channel">
|
||||
<span class="channel-label">Y</span>
|
||||
<div class="channel-bar"><div class="fill y" style="width:100%"></div></div>
|
||||
<span class="channel-pct">100 %</span>
|
||||
</div>
|
||||
<div class="channel">
|
||||
<span class="channel-label">Cb</span>
|
||||
<div class="channel-bar"><div class="fill cb" style="width:25%"></div></div>
|
||||
<span class="channel-pct">25 %</span>
|
||||
</div>
|
||||
<div class="channel">
|
||||
<span class="channel-label">Cr</span>
|
||||
<div class="channel-bar"><div class="fill cr" style="width:25%"></div></div>
|
||||
<span class="channel-pct">25 %</span>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="summary-line">
|
||||
<span>Datenmenge:</span>
|
||||
<span><strong>50 %</strong></span>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Halbe Datenmenge. Identisches Bild — für dein Auge.</div>
|
||||
<div class="verdict-a">JPEG, H.264, H.265, WebP — alle reduzieren die Farb-Auflösung auf <strong>ein Viertel</strong>. Das ist Psychovisualität: was wir nicht scharf sehen, muss man nicht scharf speichern.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 76 KiB |
@@ -0,0 +1,212 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Raster vs. Vektor — Pixel oder Anweisung?</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--raster: #ea580c;
|
||||
--vektor: #2563eb;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 30px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 24px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.pair {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 1fr;
|
||||
gap: 22px;
|
||||
max-width: 1180px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
.col {
|
||||
border: 2px solid;
|
||||
border-radius: 12px;
|
||||
padding: 16px 18px;
|
||||
background: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 10px;
|
||||
}
|
||||
.col.raster { border-color: var(--raster); }
|
||||
.col.vektor { border-color: var(--vektor); }
|
||||
|
||||
.col-head { display: flex; justify-content: space-between; align-items: baseline; }
|
||||
.col-name { font-size: 1.3rem; font-weight: 700; }
|
||||
.col.raster .col-name { color: var(--raster); }
|
||||
.col.vektor .col-name { color: var(--vektor); }
|
||||
.col-tag {
|
||||
font-size: 0.72rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.12em;
|
||||
color: var(--muted);
|
||||
}
|
||||
.col-desc { font-size: 0.85rem; color: var(--muted); line-height: 1.4; }
|
||||
|
||||
.views {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 1fr;
|
||||
gap: 8px;
|
||||
}
|
||||
.view { display: flex; flex-direction: column; gap: 4px; }
|
||||
.view-label {
|
||||
font-size: 0.68rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.1em;
|
||||
color: var(--muted);
|
||||
text-align: center;
|
||||
}
|
||||
.view-canvas {
|
||||
background: var(--soft);
|
||||
border: 1px solid var(--border);
|
||||
border-radius: 6px;
|
||||
aspect-ratio: 1.4;
|
||||
overflow: hidden;
|
||||
}
|
||||
.view-canvas svg { display: block; width: 100%; height: 100%; }
|
||||
|
||||
.stats {
|
||||
background: var(--soft);
|
||||
border-radius: 6px;
|
||||
padding: 8px 12px;
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.82rem;
|
||||
color: var(--dark);
|
||||
line-height: 1.5;
|
||||
}
|
||||
.stats .key { color: var(--muted); }
|
||||
.stats .val { font-weight: 700; }
|
||||
|
||||
.verdict {
|
||||
margin-top: 22px;
|
||||
max-width: 1180px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Raster vs. Vektor — Pixel oder Anweisung?</h1>
|
||||
<div class="sub">Beide zeigen ein Häkchen. Wenn man <strong>reinzoomt</strong>, kommt die Wahrheit raus.</div>
|
||||
|
||||
<div class="pair">
|
||||
|
||||
<div class="col raster">
|
||||
<div class="col-head">
|
||||
<span class="col-name">Raster</span>
|
||||
<span class="col-tag">PNG · JPEG · GIF</span>
|
||||
</div>
|
||||
<div class="col-desc">Ein Gitter aus Pixel-Farbwerten. Jede Position ist festgelegt.</div>
|
||||
|
||||
<div class="views">
|
||||
<div class="view">
|
||||
<div class="view-label">Original (32 × 22 px)</div>
|
||||
<div class="view-canvas">
|
||||
<svg viewBox="0 0 320 220" preserveAspectRatio="xMidYMid meet">
|
||||
<rect x="0" y="0" width="320" height="220" fill="#f8fafc"/>
|
||||
<g shape-rendering="crispEdges">
|
||||
<rect x="20" y="120" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="40" y="140" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="60" y="160" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="80" y="180" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="100" y="160" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="120" y="140" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="140" y="120" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="160" y="100" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="180" y="80" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="200" y="60" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="220" y="40" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="240" y="20" width="20" height="20" fill="#ea580c"/>
|
||||
</g>
|
||||
</svg>
|
||||
</div>
|
||||
</div>
|
||||
<div class="view">
|
||||
<div class="view-label">4× Zoom</div>
|
||||
<div class="view-canvas">
|
||||
<svg viewBox="80 60 160 160" preserveAspectRatio="xMidYMid meet">
|
||||
<rect x="0" y="0" width="320" height="220" fill="#f8fafc"/>
|
||||
<g shape-rendering="crispEdges">
|
||||
<rect x="20" y="120" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="40" y="140" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="60" y="160" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="80" y="180" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="100" y="160" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="120" y="140" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="140" y="120" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="160" y="100" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="180" y="80" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="200" y="60" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="220" y="40" width="20" height="20" fill="#ea580c"/>
|
||||
<rect x="240" y="20" width="20" height="20" fill="#ea580c"/>
|
||||
</g>
|
||||
</svg>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="stats">
|
||||
<div><span class="key">Speicher:</span> <span class="val">32 × 22 × 3 Byte = 2 112 Byte</span></div>
|
||||
<div><span class="key">Beim Zoom:</span> <span class="val">pixelig — Information ist erschöpft</span></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="col vektor">
|
||||
<div class="col-head">
|
||||
<span class="col-name">Vektor</span>
|
||||
<span class="col-tag">SVG · PDF · Schriftarten</span>
|
||||
</div>
|
||||
<div class="col-desc">Mathematische Anweisungen: <code style="background:#0f0f23;color:#5fb3e4;padding:0 4px;border-radius:3px;">polyline 30,110 → 90,170 → 250,30</code></div>
|
||||
|
||||
<div class="views">
|
||||
<div class="view">
|
||||
<div class="view-label">Original</div>
|
||||
<div class="view-canvas">
|
||||
<svg viewBox="0 0 320 220" preserveAspectRatio="xMidYMid meet">
|
||||
<rect x="0" y="0" width="320" height="220" fill="#f8fafc"/>
|
||||
<polyline points="30,130 90,190 270,30" stroke="#2563eb" stroke-width="14" fill="none" stroke-linecap="round" stroke-linejoin="round"/>
|
||||
</svg>
|
||||
</div>
|
||||
</div>
|
||||
<div class="view">
|
||||
<div class="view-label">4× Zoom</div>
|
||||
<div class="view-canvas">
|
||||
<svg viewBox="80 60 160 160" preserveAspectRatio="xMidYMid meet">
|
||||
<rect x="0" y="0" width="320" height="220" fill="#f8fafc"/>
|
||||
<polyline points="30,130 90,190 270,30" stroke="#2563eb" stroke-width="14" fill="none" stroke-linecap="round" stroke-linejoin="round"/>
|
||||
</svg>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="stats">
|
||||
<div><span class="key">Speicher:</span> <span class="val">3 Punkte + Strichbreite = ~80 Byte</span></div>
|
||||
<div><span class="key">Beim Zoom:</span> <span class="val">scharf — wird neu berechnet</span></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Pixel sind festgenagelt. Vektoren werden bei jedem Zoom <strong>neu berechnet</strong>.</div>
|
||||
<div class="verdict-a">Faustregel: <strong>Foto → Raster</strong> (kann nicht „neu berechnet" werden). <strong>Logo, Icon, Schrift → Vektor</strong> (skalierbar ohne Verlust).</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 76 KiB |
@@ -0,0 +1,189 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Was wir über Kompression gelernt haben</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--lossless: #16a34a;
|
||||
--lossy: #ef4444;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 30px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 26px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.compare {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 1fr;
|
||||
gap: 22px;
|
||||
max-width: 1180px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
.col {
|
||||
border: 2px solid;
|
||||
border-radius: 12px;
|
||||
padding: 18px 22px;
|
||||
background: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 12px;
|
||||
}
|
||||
.col.lossless { border-color: var(--lossless); }
|
||||
.col.lossy { border-color: var(--lossy); }
|
||||
|
||||
.col-head { display: flex; justify-content: space-between; align-items: baseline; }
|
||||
.col-name { font-size: 1.4rem; font-weight: 700; }
|
||||
.col.lossless .col-name { color: var(--lossless); }
|
||||
.col.lossy .col-name { color: var(--lossy); }
|
||||
.col-tag {
|
||||
font-size: 0.72rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.12em;
|
||||
color: var(--muted);
|
||||
}
|
||||
|
||||
.row { display: grid; grid-template-columns: 120px 1fr; gap: 10px 14px; }
|
||||
.row-key {
|
||||
font-size: 0.72rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.08em;
|
||||
color: var(--muted);
|
||||
padding-top: 3px;
|
||||
}
|
||||
.row-val { font-size: 0.92rem; line-height: 1.5; color: var(--dark); }
|
||||
.row-val strong {
|
||||
font-family: ui-monospace, monospace;
|
||||
background: var(--soft);
|
||||
padding: 1px 6px;
|
||||
border-radius: 4px;
|
||||
}
|
||||
|
||||
.matrix {
|
||||
margin-top: 22px;
|
||||
max-width: 1180px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
background: var(--soft);
|
||||
border: 1.5px solid var(--border);
|
||||
border-radius: 10px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.matrix-head {
|
||||
font-size: 0.78rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.1em;
|
||||
color: var(--muted);
|
||||
margin-bottom: 8px;
|
||||
}
|
||||
.matrix-grid {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 1fr 1fr 1fr;
|
||||
gap: 8px 16px;
|
||||
font-size: 0.88rem;
|
||||
}
|
||||
.matrix-grid .scenario { font-weight: 700; color: var(--dark); }
|
||||
.matrix-grid .answer {
|
||||
font-family: ui-monospace, monospace;
|
||||
color: var(--dark);
|
||||
}
|
||||
.matrix-grid .answer.lossless { color: var(--lossless); font-weight: 700; }
|
||||
.matrix-grid .answer.lossy { color: var(--lossy); font-weight: 700; }
|
||||
|
||||
.verdict {
|
||||
margin-top: 18px;
|
||||
max-width: 1180px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Was wir über Kompression gelernt haben</h1>
|
||||
<div class="sub">Zwei fundamental verschiedene Wege, dasselbe Ziel: <strong>Daten kleiner machen.</strong></div>
|
||||
|
||||
<div class="compare">
|
||||
|
||||
<div class="col lossless">
|
||||
<div class="col-head">
|
||||
<span class="col-name">Verlustfrei</span>
|
||||
<span class="col-tag">Lossless</span>
|
||||
</div>
|
||||
<div class="row">
|
||||
<div class="row-key">Was passiert</div>
|
||||
<div class="row-val">Redundanz raus — Wiederholungen kürzer schreiben</div>
|
||||
<div class="row-key">Umkehrbar</div>
|
||||
<div class="row-val">Ja. Aus der komprimierten Datei wird das <strong>exakte</strong> Original wieder.</div>
|
||||
<div class="row-key">Verfahren</div>
|
||||
<div class="row-val">RLE, Huffman, Deflate, LZ77/LZ78</div>
|
||||
<div class="row-key">Formate</div>
|
||||
<div class="row-val">ZIP · PNG · FLAC · TIFF · RAW</div>
|
||||
<div class="row-key">Faktor</div>
|
||||
<div class="row-val">2× – 5× (typisch)</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="col lossy">
|
||||
<div class="col-head">
|
||||
<span class="col-name">Verlustbehaftet</span>
|
||||
<span class="col-tag">Lossy</span>
|
||||
</div>
|
||||
<div class="row">
|
||||
<div class="row-key">Was passiert</div>
|
||||
<div class="row-val">Irrelevanz raus — was Mensch nicht wahrnimmt, wird weggeworfen</div>
|
||||
<div class="row-key">Umkehrbar</div>
|
||||
<div class="row-val">Nein. Einmal weg, für immer weg.</div>
|
||||
<div class="row-key">Trick</div>
|
||||
<div class="row-val">Psychoakustik (MP3) · Psychovisualität (JPEG)</div>
|
||||
<div class="row-key">Formate</div>
|
||||
<div class="row-val">MP3 · AAC · JPEG · WebP · H.264 · H.265</div>
|
||||
<div class="row-key">Faktor</div>
|
||||
<div class="row-val">10× – 100× (typisch)</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="matrix">
|
||||
<div class="matrix-head">Entscheidungsmatrix — wann nehme ich welches?</div>
|
||||
<div class="matrix-grid">
|
||||
<div class="scenario">Foto-Archiv (RAW)</div>
|
||||
<div class="answer lossless">Lossless</div>
|
||||
<div class="scenario">Spotify-Stream</div>
|
||||
<div class="answer lossy">Lossy</div>
|
||||
|
||||
<div class="scenario">Code-Repository</div>
|
||||
<div class="answer lossless">Lossless (ZIP)</div>
|
||||
<div class="scenario">Instagram-Foto</div>
|
||||
<div class="answer lossy">Lossy (JPEG)</div>
|
||||
|
||||
<div class="scenario">Studio-Master-Track</div>
|
||||
<div class="answer lossless">Lossless (FLAC)</div>
|
||||
<div class="scenario">YouTube-Video</div>
|
||||
<div class="answer lossy">Lossy (H.264)</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Lossless für Archiv und Code. Lossy für Streaming und Anzeige.</div>
|
||||
<div class="verdict-a">Faustregel: <strong>Werkzeug</strong> (du arbeitest noch dran) → Lossless. <strong>Konsum</strong> (du schaust/hörst nur) → Lossy.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 108 KiB |
@@ -0,0 +1,188 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>Was wir in 90 Minuten gelernt haben</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--left: #d63384;
|
||||
--right: #0891b2;
|
||||
--bytes: #0891b2;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 30px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 28px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.recap {
|
||||
display: grid;
|
||||
grid-template-columns: 160px 1fr 200px 1fr 160px;
|
||||
gap: 10px;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
align-items: center;
|
||||
}
|
||||
|
||||
.station {
|
||||
border: 2px solid var(--border);
|
||||
border-radius: 10px;
|
||||
padding: 18px 12px;
|
||||
background: #fff;
|
||||
text-align: center;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
gap: 6px;
|
||||
}
|
||||
.station.bytes { border-color: var(--bytes); background: #0f0f23; color: #fff; }
|
||||
.station-tag {
|
||||
font-size: 0.7rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.12em;
|
||||
color: var(--muted);
|
||||
}
|
||||
.station.bytes .station-tag { color: #94a3b8; }
|
||||
.station-name { font-size: 1.3rem; font-weight: 700; }
|
||||
.station.bytes .station-name { color: #67e8f9; }
|
||||
.station-detail { font-size: 0.78rem; color: var(--muted); line-height: 1.35; }
|
||||
.station.bytes .station-detail { color: #94a3b8; font-family: ui-monospace, monospace; font-size: 0.76rem; line-height: 1.35; }
|
||||
|
||||
.strang {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 6px;
|
||||
padding: 0 6px;
|
||||
}
|
||||
.strang-arrow { text-align: center; }
|
||||
.strang-arrow svg { width: 100%; height: 18px; }
|
||||
.strang-title {
|
||||
font-size: 0.92rem;
|
||||
font-weight: 700;
|
||||
text-align: center;
|
||||
line-height: 1.3;
|
||||
}
|
||||
.strang.left .strang-title { color: var(--left); }
|
||||
.strang.right .strang-title { color: var(--right); }
|
||||
.strang-list {
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 3px;
|
||||
list-style: none;
|
||||
margin: 0;
|
||||
padding: 0;
|
||||
background: var(--soft);
|
||||
border: 1px solid var(--border);
|
||||
border-radius: 8px;
|
||||
padding: 8px 12px;
|
||||
}
|
||||
.strang-list li {
|
||||
font-size: 0.82rem;
|
||||
color: var(--dark);
|
||||
padding-left: 12px;
|
||||
position: relative;
|
||||
line-height: 1.4;
|
||||
}
|
||||
.strang-list li::before {
|
||||
content: "·";
|
||||
position: absolute;
|
||||
left: 0;
|
||||
top: 0;
|
||||
font-weight: 700;
|
||||
}
|
||||
.strang.left .strang-list li::before { color: var(--left); }
|
||||
.strang.right .strang-list li::before { color: var(--right); }
|
||||
|
||||
.verdict {
|
||||
margin-top: 22px;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.95rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>Was wir in 90 Minuten gelernt haben</h1>
|
||||
<div class="sub">Beide Wege gehen durch <strong>dieselbe Mitte</strong>. Du kennst jetzt alle Stationen.</div>
|
||||
|
||||
<div class="recap">
|
||||
|
||||
<div class="station">
|
||||
<div class="station-tag">Quelle</div>
|
||||
<div class="station-name">Welt</div>
|
||||
<div class="station-detail">Schallwelle<br>Lichtwelle<br>kontinuierlich · analog</div>
|
||||
</div>
|
||||
|
||||
<div class="strang left">
|
||||
<div class="strang-arrow">
|
||||
<svg viewBox="0 0 200 18" preserveAspectRatio="none">
|
||||
<line x1="6" y1="9" x2="180" y2="9" stroke="#d63384" stroke-width="2"/>
|
||||
<path d="M174,3 L188,9 L174,15" stroke="#d63384" stroke-width="2" fill="none"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="strang-title">Welt → Byte</div>
|
||||
<ul class="strang-list">
|
||||
<li>Sampling-Rate</li>
|
||||
<li>Bittiefe · Quantisierung</li>
|
||||
<li>Datenrate-Formel</li>
|
||||
<li>Nyquist · 2·f<sub>max</sub></li>
|
||||
<li>Aliasing & Moiré</li>
|
||||
<li>44,1 kHz = 2·20 kHz + Marge</li>
|
||||
</ul>
|
||||
</div>
|
||||
|
||||
<div class="station bytes">
|
||||
<div class="station-tag">Mitte</div>
|
||||
<div class="station-name">Datei</div>
|
||||
<div class="station-detail">
|
||||
Byte-Strom<br>
|
||||
89 50 4E 47<br>
|
||||
nichts als Zahlen
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="strang right">
|
||||
<div class="strang-arrow">
|
||||
<svg viewBox="0 0 200 18" preserveAspectRatio="none">
|
||||
<line x1="6" y1="9" x2="180" y2="9" stroke="#0891b2" stroke-width="2"/>
|
||||
<path d="M174,3 L188,9 L174,15" stroke="#0891b2" stroke-width="2" fill="none"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="strang-title">Byte → Bedeutung</div>
|
||||
<ul class="strang-list">
|
||||
<li>Bit · Byte · Hex</li>
|
||||
<li>8 Bit = 256 Zustände</li>
|
||||
<li>ASCII · UTF-8</li>
|
||||
<li>Magic Number</li>
|
||||
<li>KB vs KiB</li>
|
||||
<li>Hex im Alltag (CSS, MAC)</li>
|
||||
</ul>
|
||||
</div>
|
||||
|
||||
<div class="station">
|
||||
<div class="station-tag">Ziel</div>
|
||||
<div class="station-name">Mensch</div>
|
||||
<div class="station-detail">Text · Bild · Klang<br>Bedeutung<br>verstehen</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Eine Datei ist kein Mysterium. Es ist eine <strong>Reihe von Zahlen</strong> mit zwei Geschichten dran.</div>
|
||||
<div class="verdict-a">Eine Geschichte erzählt, <strong>woher</strong> die Zahlen kommen. Die andere, <strong>was</strong> sie bedeuten. Beide kennst du jetzt.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 76 KiB |
@@ -0,0 +1,217 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="de">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>USB-C — drei Achsen, eine Verwirrung</title>
|
||||
<style>
|
||||
:root {
|
||||
--dark: #1a1a2e;
|
||||
--muted: #6b7280;
|
||||
--soft: #f8fafc;
|
||||
--border: #cbd5e1;
|
||||
--hl: #d63384;
|
||||
--stecker: #2563eb;
|
||||
--kabel: #ea580c;
|
||||
--protokoll: #7c3aed;
|
||||
}
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
|
||||
body { padding: 28px 40px; }
|
||||
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
|
||||
.sub { text-align: center; color: var(--muted); margin-bottom: 22px; font-size: 1.05rem; }
|
||||
.sub strong { color: var(--dark); }
|
||||
|
||||
.axes {
|
||||
display: grid;
|
||||
grid-template-columns: 1fr 1fr 1fr;
|
||||
gap: 18px;
|
||||
max-width: 1200px;
|
||||
margin: 0 auto;
|
||||
}
|
||||
|
||||
.axis {
|
||||
border: 2px solid;
|
||||
border-radius: 12px;
|
||||
padding: 14px 16px;
|
||||
background: #fff;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 10px;
|
||||
}
|
||||
.axis.stecker { border-color: var(--stecker); }
|
||||
.axis.kabel { border-color: var(--kabel); }
|
||||
.axis.protokoll { border-color: var(--protokoll); }
|
||||
|
||||
.axis-head { display: flex; justify-content: space-between; align-items: baseline; }
|
||||
.axis-num {
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.72rem;
|
||||
font-weight: 700;
|
||||
color: var(--muted);
|
||||
}
|
||||
.axis-name { font-size: 1.15rem; font-weight: 700; }
|
||||
.axis.stecker .axis-name { color: var(--stecker); }
|
||||
.axis.kabel .axis-name { color: var(--kabel); }
|
||||
.axis.protokoll .axis-name { color: var(--protokoll); }
|
||||
.axis-tagline {
|
||||
font-size: 0.82rem;
|
||||
color: var(--muted);
|
||||
line-height: 1.4;
|
||||
}
|
||||
.axis-tagline strong { color: var(--dark); }
|
||||
|
||||
.icon {
|
||||
background: var(--soft);
|
||||
border-radius: 6px;
|
||||
height: 60px;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
}
|
||||
.icon svg { display: block; }
|
||||
|
||||
.options {
|
||||
font-size: 0.82rem;
|
||||
line-height: 1.6;
|
||||
color: var(--dark);
|
||||
background: var(--soft);
|
||||
border-radius: 6px;
|
||||
padding: 10px 14px;
|
||||
}
|
||||
.options strong {
|
||||
font-family: ui-monospace, monospace;
|
||||
font-size: 0.78rem;
|
||||
padding: 1px 5px;
|
||||
border-radius: 3px;
|
||||
background: #fff;
|
||||
border: 1px solid var(--border);
|
||||
}
|
||||
.axis.stecker .options strong { color: var(--stecker); }
|
||||
.axis.kabel .options strong { color: var(--kabel); }
|
||||
.axis.protokoll .options strong { color: var(--protokoll); }
|
||||
|
||||
.scenario {
|
||||
margin-top: 22px;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
background: var(--soft);
|
||||
border: 1.5px solid var(--border);
|
||||
border-radius: 10px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.scenario-head {
|
||||
font-size: 0.74rem;
|
||||
font-weight: 700;
|
||||
text-transform: uppercase;
|
||||
letter-spacing: 0.1em;
|
||||
color: var(--muted);
|
||||
margin-bottom: 6px;
|
||||
}
|
||||
.scenario-body {
|
||||
font-size: 0.92rem;
|
||||
line-height: 1.5;
|
||||
}
|
||||
.scenario-body code {
|
||||
font-family: ui-monospace, monospace;
|
||||
background: #fff;
|
||||
padding: 1px 6px;
|
||||
border-radius: 4px;
|
||||
border: 1px solid var(--border);
|
||||
}
|
||||
|
||||
.verdict {
|
||||
margin-top: 16px;
|
||||
max-width: 1200px;
|
||||
margin-left: auto;
|
||||
margin-right: auto;
|
||||
text-align: center;
|
||||
border: 2px solid var(--hl);
|
||||
border-radius: 12px;
|
||||
padding: 14px 22px;
|
||||
}
|
||||
.verdict-q { font-size: 1.05rem; font-weight: 700; color: var(--hl); }
|
||||
.verdict-a { font-size: 0.92rem; color: var(--dark); margin-top: 4px; }
|
||||
.verdict-a strong { color: var(--hl); }
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<h1>USB-C — drei Achsen, eine Verwirrung</h1>
|
||||
<div class="sub">Derselbe Stecker. <strong>Aber Kabel ≠ Kabel.</strong> <strong>Protokoll ≠ Protokoll.</strong></div>
|
||||
|
||||
<div class="axes">
|
||||
|
||||
<div class="axis stecker">
|
||||
<div class="axis-head">
|
||||
<span class="axis-name">Stecker</span>
|
||||
<span class="axis-num">1 · MECHANIK</span>
|
||||
</div>
|
||||
<div class="axis-tagline">Die <strong>Form</strong>. Was reinsteckt, oval, beidseitig.</div>
|
||||
<div class="icon">
|
||||
<svg viewBox="0 0 120 30" width="140" height="40">
|
||||
<rect x="6" y="9" width="108" height="12" rx="6" fill="#2563eb" opacity="0.18" stroke="#2563eb" stroke-width="2"/>
|
||||
<rect x="22" y="13" width="76" height="4" rx="2" fill="#2563eb"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="options">
|
||||
Nur eine Sorte: <strong>USB-C</strong> (auch USB Type-C). 24 Pins. Beidseitig steckbar. Andere Stecker-Typen: USB-A, USB-B, Micro-USB — nicht mit C kompatibel.
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="axis kabel">
|
||||
<div class="axis-head">
|
||||
<span class="axis-name">Kabel</span>
|
||||
<span class="axis-num">2 · WAS DURCH-PASST</span>
|
||||
</div>
|
||||
<div class="axis-tagline">Die <strong>Adern</strong>. Was elektrisch transportiert werden kann.</div>
|
||||
<div class="icon">
|
||||
<svg viewBox="0 0 160 30" width="180" height="40">
|
||||
<path d="M10,15 L150,15" stroke="#ea580c" stroke-width="3"/>
|
||||
<rect x="2" y="8" width="14" height="14" rx="3" fill="#ea580c" opacity="0.4" stroke="#ea580c"/>
|
||||
<rect x="144" y="8" width="14" height="14" rx="3" fill="#ea580c" opacity="0.4" stroke="#ea580c"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="options">
|
||||
<strong>Charge-only</strong> · billig, nur Strom · 5 W<br>
|
||||
<strong>USB 2.0</strong> · 480 Mbit/s · 60 W (3 A)<br>
|
||||
<strong>USB 3.2 Gen 2</strong> · 10 Gbit/s · 100 W<br>
|
||||
<strong>Thunderbolt 4</strong> · 40 Gbit/s · 240 W
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="axis protokoll">
|
||||
<div class="axis-head">
|
||||
<span class="axis-name">Protokoll</span>
|
||||
<span class="axis-num">3 · WAS LÄUFT</span>
|
||||
</div>
|
||||
<div class="axis-tagline">Die <strong>Sprache</strong>. Was die zwei Geräte miteinander reden.</div>
|
||||
<div class="icon">
|
||||
<svg viewBox="0 0 160 30" width="180" height="40">
|
||||
<circle cx="20" cy="15" r="6" fill="#7c3aed"/>
|
||||
<path d="M30,15 L130,15" stroke="#7c3aed" stroke-width="2" stroke-dasharray="6,4"/>
|
||||
<circle cx="140" cy="15" r="6" fill="#7c3aed"/>
|
||||
</svg>
|
||||
</div>
|
||||
<div class="options">
|
||||
<strong>USB-PD</strong> · Power Delivery (Laden)<br>
|
||||
<strong>USB 2/3/4</strong> · Datenübertragung<br>
|
||||
<strong>Thunderbolt 3/4</strong> · Daten + Display<br>
|
||||
<strong>DisplayPort Alt</strong> · Monitor anschließen<br>
|
||||
<strong>HDMI Alt</strong> · weiter HDMI rausführen
|
||||
</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="scenario">
|
||||
<div class="scenario-head">Konkret: warum lädt der Laptop nicht?</div>
|
||||
<div class="scenario-body">
|
||||
USB-C-Port am Laptop ist da (<strong>Stecker</strong> stimmt). Aber der Aldi-Kabel ist <code>Charge-only</code> mit <code>5 W</code> (<strong>Kabel</strong> kann nicht genug Strom liefern). Oder der Port am Laptop unterstützt nur <code>USB-PD</code> mit 100 W, das Netzteil meldet aber nur 65 W (<strong>Protokoll</strong>-Handshake scheitert). <em>Eine der drei Achsen passt nicht.</em>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="verdict">
|
||||
<div class="verdict-q">Drei Achsen. Drei unabhängige Fragen. Drei Gründe, warum's nicht funktioniert.</div>
|
||||
<div class="verdict-a">Beim nächsten „USB-C-Kabel funktioniert nicht": <strong>Stecker passt → Kabel-Spec checken → Protokoll-Support prüfen.</strong> In dieser Reihenfolge.</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
After Width: | Height: | Size: 118 KiB |
|
After Width: | Height: | Size: 251 KiB |
@@ -97,7 +97,7 @@ Hochschule der Medien Stuttgart
|
||||
|
||||
<!-- _class: lead -->
|
||||
|
||||
# Herzlich willkommen!
|
||||
# Herzlich willkommen
|
||||
## Einführung
|
||||
|
||||
---
|
||||
@@ -116,13 +116,13 @@ Hochschule der Medien Stuttgart
|
||||
|
||||
---
|
||||
|
||||
# Warum dieses Modul?
|
||||
# Motivation für dieses Modul
|
||||
|
||||
**Das Internet ist überall** – aber was steckt dahinter?
|
||||
|
||||
* Warum sehen Webseiten auf dem Handy anders aus?
|
||||
* Wie funktioniert eigentlich das Internet?
|
||||
* Wie erkennen Sie, ob eine Werbeagentur gute Arbeit leistet?
|
||||
* Wie erkennt ihr, ob eine Werbeagentur gute Arbeit leistet?
|
||||
* Was hat ein Unterseekabel mit meiner E-Mail zu tun?
|
||||
* **→ Die Technik dahinter verstehen und fundierte Entscheidungen treffen**
|
||||
|
||||
@@ -136,13 +136,13 @@ Als Digital- und MedienwirtschaftlerInnen werdet ihr täglich mit technischen Fr
|
||||
* Wie baue ich eine barrierearme Webseite?
|
||||
* Welches Protokoll für welchen Zweck?
|
||||
* Wie funktioniert das Web hinter den Kulissen?
|
||||
* **→ Mitreden können – und selbst Webseiten bauen!**
|
||||
* **→ Mitreden können – und selbst Webseiten bauen**
|
||||
|
||||
---
|
||||
|
||||
# Was Sie hier lernen werden
|
||||
# Lernziele
|
||||
|
||||
**In dieser Veranstaltung erwerben Sie folgende Kompetenzen:**
|
||||
**In dieser Veranstaltung erwerbt ihr folgende Kompetenzen:**
|
||||
|
||||
* Geschichte des Computers und Internets
|
||||
* HTML-Grundlagen und semantisches Markup
|
||||
@@ -172,7 +172,7 @@ Als Digital- und MedienwirtschaftlerInnen werdet ihr täglich mit technischen Fr
|
||||
2. Netzwerke, Protokolle, **semantisches HTML** & **CSS**
|
||||
3. Interaktivität, Animationen & **JavaScript**
|
||||
|
||||
**Ziel:** "Gelernte Hilflosigkeit" ablegen
|
||||
**Ziel:** Technische Scheu abbauen und Web-Grundlagen selbst beherrschen
|
||||
|
||||
---
|
||||
|
||||
|
||||
@@ -126,7 +126,7 @@ Hochschule der Medien Stuttgart
|
||||
2. Netzwerke, Protokolle, **semantisches HTML** & **CSS**
|
||||
3. Interaktivität, Animationen & **JavaScript**
|
||||
|
||||
**Ziel:** "Gelernte Hilflosigkeit" ablegen
|
||||
**Ziel:** Technische Scheu abbauen und Web-Grundlagen selbst beherrschen
|
||||
|
||||
---
|
||||
|
||||
@@ -403,10 +403,10 @@ Der Turing-Test (1950): Ein Interrogator kommuniziert per Text mit einem Mensche
|
||||
- Implosions-Simulationen
|
||||
- Nuklearphysik-Gleichungen
|
||||
|
||||
**Lösung 1943:** Menschliche "Computer"
|
||||
**Lösung 1943:** Die Berechnungen übernehmen menschliche "Computer"
|
||||
→ Mathematikerinnen mit Taschenrechnern & IBM-Lochkarten
|
||||
|
||||
**Zu langsam** → Bedarf an automatischer Berechnung
|
||||
**Das ist zu langsam** → es entsteht der Bedarf an automatischer Berechnung
|
||||
|
||||
**Schlüsselfigur:** John von Neumann (Mathematik & Stoßwellen)
|
||||
|
||||
@@ -427,7 +427,7 @@ Das ENIAC-Projekt in Philadelphia sollte die Berechnungen beschleunigen.
|
||||
# John von Neumann (1903–1957)
|
||||
|
||||
- Geboren in Budapest, Österreich-Ungarn
|
||||
- Mit 8: Konnte Telefonbücher auswendig
|
||||
- Mit 8: Konnte ganze Telefonbücher auswendig aufsagen
|
||||
- Mit 22: Doktor in Mathematik
|
||||
|
||||
**Beiträge:**
|
||||
@@ -623,7 +623,7 @@ COBOL läuft heute noch auf Bankensystemen
|
||||
- Jeder Befehl entspricht direkt einer CPU-Instruktion
|
||||
- Hardwarenah, aber für Menschen lesbar
|
||||
|
||||
**Fun Fact:** Chris Sawyer schrieb **RollerCoaster Tycoon** (1999) fast komplett in x86-Assembly
|
||||
**Kuriosum:** Chris Sawyer schrieb **RollerCoaster Tycoon** (1999) fast komplett in x86-Assembly
|
||||
|
||||
<!--
|
||||
KATHLEEN BOOTH (1922–2022):
|
||||
@@ -893,7 +893,7 @@ Geprägt 1948 von Claude Shannon
|
||||
|
||||
<!--
|
||||
Alles Digitale basiert darauf
|
||||
Transistoren in CPUs: Milliarden Bits schalten Millionen Mal pro Sekunde
|
||||
Transistoren in CPUs: Milliarden Bit schalten Millionen Mal pro Sekunde
|
||||
Shannon: Begründer der Informationstheorie
|
||||
-->
|
||||
|
||||
@@ -940,19 +940,19 @@ binary 00101010 = decimal 42
|
||||
- ASCII (1963) brauchte 7 Bit für 128 Zeichen
|
||||
- 8 Bit = praktisch für Hardware (Zweierpotenz: 2³ = 8)
|
||||
- 8 Bit = 2 Hexadezimalziffern (elegante Darstellung)
|
||||
- Kleinste adressierbare Einheit im Speicher: Prozessor kann nicht einzelne Bits direkt ansprechen, immer Bytes
|
||||
- Kleinste adressierbare Einheit im Speicher: Prozessor kann nicht einzelne Bit direkt ansprechen, immer Byte
|
||||
-->
|
||||
|
||||
---
|
||||
|
||||
# Was kann man mit 256 Zuständen machen?
|
||||
# 256 Zustände – was sich damit darstellen lässt
|
||||
|
||||
- **256 Zeichen** (Buchstaben, Zahlen, Symbole)
|
||||
- **256 Graustufen** (0 = Schwarz, 255 = Weiß)
|
||||
- **256 Lautstärkestufen**
|
||||
- **Zahlen 0-255**
|
||||
|
||||
**Für Farbe:** 3 Bytes pro Pixel (RGB)
|
||||
**Für Farbe:** 3 Byte pro Pixel (RGB)
|
||||
R=0-255, G=0-255, B=0-255 → **16,7 Millionen Farben**
|
||||
|
||||
<!--
|
||||
@@ -1004,7 +1004,7 @@ Warum gerade 8 Bit?
|
||||
<!--
|
||||
Dezimal = was wir im Alltag nutzen (10 Finger → 10 Ziffern)
|
||||
Binär = was Computer nutzen (Strom an/aus → 2 Zustände)
|
||||
Hexadezimal = Kompromiss: kompakter als Binär, aber passt perfekt auf Bytes (2 Hex-Ziffern = 1 Byte = 8 Bit)
|
||||
Hexadezimal = Kompromiss: kompakter als Binär, aber passt perfekt auf Byte (2 Hex-Ziffern = 1 Byte = 8 Bit)
|
||||
Die Basis bestimmt, wie viele Symbole pro Stelle zur Verfügung stehen:
|
||||
- Dezimal: 10 (0–9)
|
||||
- Binär: 2 (0, 1)
|
||||
@@ -1021,7 +1021,7 @@ Die Basis bestimmt, wie viele Symbole pro Stelle zur Verfügung stehen:
|
||||
**Hexadezimal (Base 16):**
|
||||
`4D 50 33` (= "MP3" in ASCII)
|
||||
|
||||
**Jede Hex-Ziffer = 4 Bits (ein "Nibble")**
|
||||
**Jede Hex-Ziffer = 4 Bit (ein "Nibble")**
|
||||
0-9, A-F (A=10, B=11, ..., F=15)
|
||||
|
||||
`4 = 0100` `D = 1101`
|
||||
@@ -1031,7 +1031,7 @@ Die Basis bestimmt, wie viele Symbole pro Stelle zur Verfügung stehen:
|
||||
<!--
|
||||
Hex = Shortcut für Menschen
|
||||
1 Byte = 2 Hex-Ziffern (00-FF)
|
||||
"Nibble" = 4 Bits = halbes Byte (Wortspiel: nibble = knabbern, byte = beißen)
|
||||
"Nibble" = 4 Bit = halbes Byte (Wortspiel: nibble = knabbern, byte = beißen)
|
||||
CSS (Cascading Style Sheets)-Farben nutzen Hex: #FF0000 = Rot
|
||||
-->
|
||||
|
||||
@@ -1076,7 +1076,7 @@ Dieselben 8 Byte (PNG-Dateianfang: 89 50 4E 47 0D 0A 1A 0A) — drei Perspektive
|
||||
|
||||
---
|
||||
|
||||
# Wo begegnet Ihnen Hex-Code?
|
||||
# Wo euch Hex-Code begegnet
|
||||
|
||||
| Kontext | Beispiel |
|
||||
|---------|----------|
|
||||
@@ -1112,7 +1112,7 @@ Fehlercodes: Windows zeigt diese bei Bluescreens
|
||||
|
||||
---
|
||||
|
||||
# Bit vs. Byte: Die Verwirrung
|
||||
# Bit vs. Byte: der Unterschied
|
||||
|
||||
**1 Byte = 8 Bit** → Bit ÷ 8 = Byte
|
||||
|
||||
@@ -1126,7 +1126,7 @@ Fehlercodes: Windows zeigt diese bei Bluescreens
|
||||
|
||||
|
||||
<!--
|
||||
Bits = kleines b, Bytes = großes B
|
||||
Bit = kleines b, Byte = großes B
|
||||
Internetanbieter: Mbit/s (klingt größer!)
|
||||
100 Mbit/s ÷ 8 = 12,5 MB/s
|
||||
Warum? Marketing - 100 klingt besser als 12,5
|
||||
@@ -1146,7 +1146,7 @@ Warum? Marketing - 100 klingt besser als 12,5
|
||||
**H**yper**T**ext **M**arkup **L**anguage
|
||||
|
||||
* **Keine** Programmiersprache
|
||||
* Am ehesten eine Formattierungssprache
|
||||
* Am ehesten eine Auszeichnungssprache (Markup)
|
||||
* Beschreibt **Struktur und Aufbau** einer Webseite
|
||||
* ```html
|
||||
<p>Das ist ein Absatz.</p>
|
||||
@@ -1167,8 +1167,8 @@ Aktuelle Version: HTML5 (seit 2014)
|
||||
# Was ist HTML? (2/2)
|
||||
|
||||
* Mit HTML werden **HTML-Dokumente** beschrieben (bspw. `index.html`)
|
||||
* Ein HTML-Dokument beschreibt das/den `Document Object Model (DOM)`
|
||||
* Der DOM ist eine **hierarchische Baumstruktur** (Kind- und Elternelemente)
|
||||
* Ein HTML-Dokument beschreibt das **Document Object Model (DOM)**
|
||||
* Das DOM ist eine **hierarchische Baumstruktur** (Kind- und Elternelemente)
|
||||
* *parent nodes / elements*
|
||||
* *child nodes / elements*
|
||||
* *sibling nodes / elements*
|
||||
@@ -1178,12 +1178,12 @@ Aktuelle Version: HTML5 (seit 2014)
|
||||
|
||||
# HTML-Anatomie (1/2)
|
||||
|
||||
Formattierungssprache
|
||||
HTML ist eine Auszeichnungssprache (Markup).
|
||||
|
||||
* HTML folgt einer strengen **Syntax** zur Formattieren von digitalen Inhalten
|
||||
* HTML folgt einer strengen **Syntax** zum Auszeichnen digitaler Inhalte
|
||||
* Syntax: `<element attribute="value"> ... </element>`
|
||||
* Öffnende und schließende HTML-Tags müssen identisch sein
|
||||
* Das schließende Tag muss ein `/` nach der Spitzenklammer haben
|
||||
* Das schließende Tag hat ein `/` direkt nach der öffnenden spitzen Klammer (`</p>`)
|
||||
|
||||
---
|
||||
|
||||
@@ -1199,7 +1199,7 @@ Formattierungssprache
|
||||
* `<b> ... </b>` fett-gedruckter Text (inline)
|
||||
* `<a> ... </a>` Hyperlink (Verlinkung zu anderen Webseiten, Bildern)
|
||||
* `<body> ... </body>` Sichtbarer Teil eines HTML-Dokuments
|
||||
* `<details> ... </details>` Collapsable / Akkordion / Aufklapp-Text
|
||||
* `<details> ... </details>` Aufklapp-Text (Akkordion)
|
||||
* **Selbst-schließend**
|
||||
* `<img />` Bild, Vektorgrafik etc.
|
||||
* `<input />` Eingabefeld
|
||||
@@ -1385,7 +1385,7 @@ a = anchor (Anker)
|
||||
|
||||
# Natives HTML
|
||||
|
||||
Was noch üblicherweise mit Skriptsprachen wie JavaScript und anderen umgesetzt werden musste, kann nun HTML selber. Wer dieses dennoch verwendet, hat das einen sog. *"Code smell"*.
|
||||
Vieles, was früher JavaScript erforderte, beherrscht HTML inzwischen selbst. Wer es dennoch per Skript löst, produziert einen sogenannten *"Code Smell"*.
|
||||
|
||||
| Funktion | HTML-Element |
|
||||
|----------|--------------|
|
||||
@@ -1510,7 +1510,7 @@ Accessibility ist eingebaut
|
||||
|
||||
<!-- _class: lead -->
|
||||
|
||||
# Wie nutzen Menschen das Web?
|
||||
# Wie Menschen das Web nutzen
|
||||
|
||||
---
|
||||
|
||||
@@ -1554,7 +1554,7 @@ Accessibility ist eingebaut
|
||||
|
||||
---
|
||||
|
||||
# Wie nutzen Menschen das Web?
|
||||
# Wie Menschen das Web nutzen
|
||||
|
||||
| Eingabe | Nutzungsweise |
|
||||
|---------|---------------|
|
||||
@@ -1613,10 +1613,10 @@ Screenreader lesen den DOM sequenziell – semantisches HTML (`<nav>`, `<main>`,
|
||||
|
||||
---
|
||||
|
||||
# Warum "Barrierefreiheit"?
|
||||
# Bedeutung von "Barrierefreiheit"
|
||||
|
||||
**Rechtlich:**
|
||||
- EU: European Accessibility Act (seit Juni 2025 in Kraft!)
|
||||
- EU: European Accessibility Act (seit Juni 2025 in Kraft)
|
||||
- DE: BITV 2.0 (Behörden), Privatwirtschaft betroffen
|
||||
|
||||
**Ethisch:**
|
||||
|
||||
@@ -91,6 +91,9 @@ section.erklaerung p {
|
||||
section.erklaerung table {
|
||||
font-size: 0.9rem;
|
||||
}
|
||||
section.dimmed {
|
||||
opacity: 0.2;
|
||||
}
|
||||
</style>
|
||||
|
||||
<!-- _class: invert -->
|
||||
@@ -197,26 +200,14 @@ SPEAKER NOTES:
|
||||
|
||||
Das Web folgt dem **Client-Server-Modell**: Ein Client (Browser) sendet einen **Request**, ein Server liefert eine **Response** – nach den Regeln eines **Protokolls**.
|
||||
|
||||
| Begriff | Was ist das? | Analogie |
|
||||
|---------|--------------|----------|
|
||||
| **Host** | Ein Rechner im Netz | Ein Haus mit Adresse |
|
||||
| **Client** | Der, der fragt (Browser) | Gast im Restaurant |
|
||||
| **Server** | Der, der antwortet | Küche im Restaurant |
|
||||
| **Request** | Die Anfrage | Bestellung |
|
||||
| **Response** | Die Antwort | Das Essen |
|
||||
| **Protokoll** | Regeln für Kommunikation (z. B. TCP, HTTP) | Speisekarte + Bestellablauf |
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- 6 Grundbegriffe – tauchen überall auf
|
||||
- Client/Server = Grundstruktur des Webs
|
||||
- Browser = Client
|
||||
- Google/HdM/Netflix = Server
|
||||
- Request/Response = Kommunikationsmuster
|
||||
- Protokoll = Regelwerk
|
||||
- Analogie: Restaurant in Japan ohne Regeln zu kennen
|
||||
- Host = Rechner mit Adresse im Netz
|
||||
-->
|
||||
| Begriff | Was ist das? |
|
||||
|---------------|--------------------------------------------------------------------------|
|
||||
| **Host** | Ein netzwerkfähiger Rechner (Laptop, Smartphone, Display in S-Bahn etc.) |
|
||||
| **Client** | Host bzw. Anwendung mit einer Anfrage (bspw. Browser) |
|
||||
| **Server** | Host bzw. Anwendung mit der Antwort (bspw. Webserver) |
|
||||
| **Request** | Die Anfrage des Clients |
|
||||
| **Response** | Die Antwort des Servers |
|
||||
| **Protokoll** | Regeln für Kommunikation (z. B. TCP, HTTP) |
|
||||
|
||||
---
|
||||
|
||||
@@ -224,13 +215,13 @@ SPEAKER NOTES:
|
||||
|
||||
# Glossar: Adressen & Identitäten
|
||||
|
||||
Jedes Gerät im Netz braucht Adressen: eine **IP** für das globale Routing, eine **MAC** für das lokale Netz und einen **Port** für das richtige Programm.
|
||||
Jedes Gerät im Netz braucht Adressen: eine **IP** (Internet Protocol) für das globale Routing, eine **MAC** (Media Access Control) für das lokale Netz und einen **Port** für das richtige Programm.
|
||||
|
||||
| Begriff | Was ist das? | Beispiel |
|
||||
|---------|--------------|----------|
|
||||
| **IP-Adresse** | Globale Adresse im Internet | `212.132.79.37` |
|
||||
| **MAC-Adresse** | Hardware-Adresse der Netzwerkkarte | `aa:bb:cc:dd:ee:ff` |
|
||||
| **Port** | "Türnummer" auf einem Rechner | `80`, `443`, `22` |
|
||||
| **Port** | Nummer eines Programms bzw. Dienstes | `80`, `443`, `22` |
|
||||
| **DNS** | Telefonbuch: Name → IP | hdm-stuttgart.de → IP |
|
||||
| **Domain** | Menschenlesbarer Name | `hdm-stuttgart.de` |
|
||||
|
||||
@@ -253,13 +244,15 @@ SPEAKER NOTES:
|
||||
|
||||
Daten werden Schicht für Schicht verpackt — jede Schicht fügt einen eigenen **Header** hinzu und erzeugt so eine neue Dateneinheit.
|
||||
|
||||
| Begriff | Was ist das? | Schicht |
|
||||
|---------|--------------|---------|
|
||||
| **Paket** | Daten + IP-Header | Internet (Layer 3) |
|
||||
| **Segment** | Daten + TCP-Header | Transport (Layer 4) |
|
||||
| **Frame** | Daten + MAC-Header | Netzzugang (Layer 2) |
|
||||
| **Header** | Metadaten am Anfang | Jede Schicht |
|
||||
| **Payload** | Die eigentlichen Nutzdaten | Der Inhalt |
|
||||
| Begriff | Was ist das? | Schicht |
|
||||
|-------------|-------------------------------------------------------|--------------------------|
|
||||
| **Payload** | Die eigentlichen Nutzdaten (bspw. Request, Response) | Anwendung |
|
||||
| **Header** | Metadaten vor und nach dem Payload | Jedes Layer |
|
||||
| **Segment** | Payload + TCP-Header (Anwendungsport) | Transport (Layer 3) |
|
||||
| **Paket** | Payload + IP-Header (WLAN-Router) | Internet (Layer 2) |
|
||||
| **Frame** | Payload + MAC-Header (Netzwerkkarte) | Netzzugang (Layer 1) |
|
||||
| **Bit** | Abfolge von Signalen (Licht, Strom, Kabel, Mobilfunk) | Netzzugang (Layer 1) |
|
||||
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -268,7 +261,6 @@ SPEAKER NOTES:
|
||||
- Header = Metadaten (wer, wohin, wie groß)
|
||||
- Paket/Segment/Frame = gleiche Daten, verschiedene Verpackung
|
||||
- Wie Matroschka: Schicht packt Schicht ein
|
||||
- Wird klarer beim Schichtenmodell gleich
|
||||
-->
|
||||
|
||||
---
|
||||
@@ -279,13 +271,13 @@ SPEAKER NOTES:
|
||||
|
||||
**Latenz** und **Bandbreite** bestimmen, wie schnell Daten ankommen — Latenz misst die Verzögerung, Bandbreite die Kapazität.
|
||||
|
||||
| Begriff | Was ist das? | Einheit |
|
||||
|---------|--------------|---------|
|
||||
| **Latenz** | Verzögerung (hin + zurück) | Millisekunden |
|
||||
| **Bandbreite** | Datenmenge pro Zeiteinheit | Mbit/s |
|
||||
| **Hop** | Ein Sprung zum nächsten Router | – |
|
||||
| **Round-Trip** | Hin- und Rückweg | – |
|
||||
| **Ping** | "Bist du da?" + Antwort | ms |
|
||||
| Begriff | Was ist das? | Einheit |
|
||||
|----------------|-------------------------------------------------|--------------------|
|
||||
| **Latenz** | Verzögerung (hin + zurück) | Millisekunden (ms) |
|
||||
| **Bandbreite** | Datenmenge pro Zeiteinheit | Mbit/s |
|
||||
| **Hop** | Ein Sprung zum nächsten Router (im Internet) | – |
|
||||
| **Round-Trip** | Hin- und Rückweg | – |
|
||||
| **Ping** | Client sendet "ping", bekommt von Server "pong" | ms |
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -309,14 +301,17 @@ SPEAKER NOTES:
|
||||
|
||||
Protokolle regeln die Kommunikation auf jeder Schicht — von der Anwendung (HTTP) über den Transport (TCP/UDP) bis zum Routing (IP).
|
||||
|
||||
| Protokoll | Wofür? | Port | Schicht |
|
||||
|-----------|--------|------|---------|
|
||||
| **HTTP** | Webseiten übertragen | 80 | Anwendung |
|
||||
| **HTTPS** | HTTP + Verschlüsselung | 443 | Anwendung |
|
||||
| **TCP** | Zuverlässige Übertragung | – | Transport |
|
||||
| **UDP** | Schnelle Übertragung | – | Transport |
|
||||
| **IP** | Routing durchs Internet | – | Internet |
|
||||
| **DNS** | Namen → IP-Adressen | 53 | Anwendung |
|
||||
| Protokoll | Wofür? | Port | Schicht |
|
||||
|-----------|--------------------------------|------|---------------------|
|
||||
| **HTTP** | Webseiten + Inhalte übertragen | 80 | Anwendung (Layer 4) |
|
||||
| **HTTPS** | HTTP + Verschlüsselung | 443 | Anwendung (Layer 4) |
|
||||
| **DNS** | Namen → IP-Adressen | 53 | Anwendung (Layer 4) |
|
||||
| **TCP** | Zuverlässige Übertragung | – | Transport (Layer 3) |
|
||||
| **UDP** | Schnelle Übertragung | – | Transport (Layer 3) |
|
||||
| **IP** | Routing durchs Internet | – | Internet (Layer 2) |
|
||||
|
||||
<i><small>HTTP(S) = Hypertext Transfer Protocol (Secure)</small> · <small>DNS = Domain Name System</small> · <small>TCP = Transmission Control Protocol</small> · <small>UDP = User Datagram Protocol</small> · <small>IP = Internet Protocol</small>
|
||||
</i>
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -350,23 +345,23 @@ SPEAKER NOTES:
|
||||
|
||||

|
||||
|
||||
Zwischen Ihnen und einer Webseite liegen viele Stationen.
|
||||
Zwischen Klick und fertiger Webseite liegen viele Stationen.
|
||||
|
||||
Jede Komponente "spricht" anders:
|
||||
Jede Schicht spricht eine andere Sprache:
|
||||
|
||||
- Browser → **HTTP**
|
||||
- Netzwerkkarte → **Bits / Signale**
|
||||
- Netzwerkkarte → **Bit und Signale**
|
||||
- Router → **IP-Pakete**
|
||||
- Provider → **Routing**
|
||||
|
||||
Wie zusammenbringen?
|
||||
Diese Sprachen müssen zusammenspielen.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- Browser→Server: min. 7-8 Stationen
|
||||
- Jede Station: andere Aufgabe
|
||||
- Browser versteht HTTP
|
||||
- Netzwerkkarte versteht nur Bits (Strom an/aus)
|
||||
- Netzwerkkarte versteht nur Bit (Strom an/aus)
|
||||
- Router versteht IP
|
||||
- Wie zusammenbringen?
|
||||
-->
|
||||
@@ -375,11 +370,11 @@ SPEAKER NOTES:
|
||||
|
||||
# Die Lösung: Arbeitsteilung
|
||||
|
||||
Statt dass jedes Programm alles können muss: **Aufgaben aufteilen.**
|
||||
Statt dass jedes Programm alles können muss, teilen sich mehrere Schichten die Aufgaben.
|
||||
|
||||
| Wer? | Aufgabe | Typische Geräte |
|
||||
|------|---------|-----------------|
|
||||
| **Browser/App** | Was will ich? | Laptop, Handy, Server |
|
||||
| **Browser/Anwendung** | Was will ich? | Laptop, Handy, Server |
|
||||
| **TCP/UDP** | Kommt alles an? | – (Software) |
|
||||
| **IP** | Welcher Rechner? | Router, Firewall |
|
||||
| **Ethernet/WLAN** | Nächstes Gerät? | Switch, Access Point |
|
||||
@@ -402,15 +397,19 @@ SPEAKER NOTES:
|
||||
|
||||
# Das TCP/IP-Modell
|
||||
|
||||
| Schicht | Name | Aufgabe | Protokolle |
|
||||
|---------|------|---------|------------|
|
||||
| **4** | Anwendung | Was? Welcher Dienst? | HTTP, DNS, SMTP |
|
||||
| **3** | Transport | Zuverlässigkeit, Ports | TCP, UDP |
|
||||
| **2** | Internet | Routing, globale Adressen | IP |
|
||||
| **1** | Netzzugang | Lokale Übertragung | Ethernet, WLAN |
|
||||
| Schicht | Name | Aufgabe | Protokolle |
|
||||
|---------|------|------------------------------------------|-------------------|
|
||||
| **4** | Anwendung | Dienste steuern, Daten austauschen etc. | HTTP, DNS, SMTP |
|
||||
| **3** | Transport | Zuverlässige Verbindung aufbauen (Ports) | TCP, UDP |
|
||||
| **2** | Internet | Routing, global eindeutige Adressen | IP |
|
||||
| **1** | Netzzugang | Lokale Übertragung | Ethernet, WLAN |
|
||||
|
||||
Jede Schicht hat genau eine Aufgabe und nutzt nur die Schicht direkt darunter.
|
||||
|
||||
Die oberste Schicht ist die **Anwendungsschicht** — die Ebene eurer Programme (Browser, Mail). Sie nutzt die unteren Schichten, ohne deren Details zu kennen: genau die Abstraktion, die ihr bereits kennt.
|
||||
|
||||
<small>SMTP = Simple Mail Transfer Protocol</small>
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- TCP/IP = das echte Internet
|
||||
@@ -419,18 +418,17 @@ SPEAKER NOTES:
|
||||
- Transport: Kommt an? Welches Programm? (TCP, UDP)
|
||||
- Internet: Wie zum Zielrechner? (IP)
|
||||
- Netzzugang: Wie zum nächsten Gerät? (Ethernet, WLAN)
|
||||
- KLAUSUR: Welches Protokoll → welche Schicht
|
||||
-->
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: erklaerung -->
|
||||
<!-- _class: "erklaerung dimmed" -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||
# TCP/IP-Modell – Vertiefung
|
||||
|
||||
Das TCP/IP-Modell entstand praktisch aus dem ARPANET (1970er), im Gegensatz zum theoretischen OSI-Modell (7 Schichten, 1984). TCP/IP hat sich durchgesetzt, weil es das reale Internet beschreibt.
|
||||
Das TCP/IP-Modell entstand praktisch aus dem ARPANET (1970er), im Gegensatz zum theoretischen OSI-Modell (Open Systems Interconnection, 7 Schichten, 1984). TCP/IP hat sich durchgesetzt, weil es das reale Internet beschreibt.
|
||||
|
||||
**Schicht-Aufgaben im Detail:**
|
||||
|
||||
@@ -447,15 +445,17 @@ Das TCP/IP-Modell entstand praktisch aus dem ARPANET (1970er), im Gegensatz zum
|
||||
|
||||
**Warum Schichten?** Abstraktion. HTTP muss nicht wissen, ob Ethernet oder WLAN verwendet wird. Änderungen in einer Schicht betreffen andere nicht.
|
||||
|
||||
<small>FTP = File Transfer Protocol · ICMP = Internet Control Message Protocol · PPP = Point-to-Point Protocol</small>
|
||||
|
||||
---
|
||||
|
||||
# Schichten verpacken Daten
|
||||
|
||||

|
||||
|
||||
**Encapsulation:** Jede Schicht packt ein.
|
||||
**Encapsulation:** Jede Schicht verpackt die Daten der darüberliegenden Schicht.
|
||||
|
||||
**Decapsulation:** Beim Empfang wird ausgepackt.
|
||||
**Decapsulation:** Beim Empfang packt jede Schicht ihren Teil wieder aus.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -464,7 +464,7 @@ SPEAKER NOTES:
|
||||
- TCP: eigener Header dazu (Ports, Seq-Nr) → weiter
|
||||
- IP: eigener Header dazu (IPs) → weiter
|
||||
- Ethernet: Header + Trailer (MACs, Prüfsumme)
|
||||
- Am Ende: Bits → elektrische Signale / Funk
|
||||
- Am Ende: Bit → elektrische Signale / Funk
|
||||
- Empfang: Rückwärts auspacken
|
||||
-->
|
||||
|
||||
@@ -507,32 +507,31 @@ SPEAKER NOTES:
|
||||
| Schicht | Einheit | Header-Inhalte |
|
||||
|---------|---------|----------------|
|
||||
| Anwendung | Daten | HTTP-Header, Cookies, Content-Type |
|
||||
| Transport | Segment | Quell-/Zielport, Sequenznummer, Flags (SYN, ACK) |
|
||||
| Internet | Paket | Quell-/Ziel-IP, TTL, Protokoll (TCP=6, UDP=17) |
|
||||
| Netzzugang | Frame | Quell-/Ziel-MAC, EtherType, CRC-Prüfsumme |
|
||||
| Transport | Segment | Quell-/Zielport, Sequenznummer, Flags (SYN = Synchronize, ACK = Acknowledge) |
|
||||
| Internet | Paket | Quell-/Ziel-IP, TTL (Time To Live), Protokoll (TCP=6, UDP=17) |
|
||||
| Netzzugang | Frame | Quell-/Ziel-MAC, EtherType, CRC-Prüfsumme (Cyclic Redundancy Check) |
|
||||
|
||||
**Overhead-Rechnung (1 Byte HTTP-Body):**
|
||||
- Ethernet: 14 + 4 Bytes (Header + Trailer)
|
||||
- IP: 20 Bytes (ohne Optionen)
|
||||
- TCP: 20 Bytes (ohne Optionen)
|
||||
- **Minimum: 58 Bytes für 1 Byte Nutzlast**
|
||||
- Ethernet: 14 + 4 Byte (Header + Trailer)
|
||||
- IP: 20 Byte (ohne Optionen)
|
||||
- TCP: 20 Byte (ohne Optionen)
|
||||
- **Minimum: 58 Byte für 1 Byte Nutzlast**
|
||||
|
||||
**Decapsulation:** Empfänger packt in umgekehrter Reihenfolge aus. Jede Schicht prüft ihren Header (z.B. CRC) und reicht Nutzdaten nach oben.
|
||||
|
||||
---
|
||||
|
||||
# Warum ist das clever?
|
||||
# Vorteile der Schichtung
|
||||
|
||||
**Ohne Schichten:**
|
||||
Jede App müsste wissen, wie Ethernet-Frames gebaut werden, wie WLAN funktioniert, wie Router Pakete weiterleiten...
|
||||
Jede Anwendung müsste wissen, wie Ethernet-Frames gebaut werden, wie WLAN funktioniert und wie Router Pakete weiterleiten.
|
||||
|
||||
**Mit Schichten:**
|
||||
Der Browser sagt: "Ich will diese Seite."
|
||||
Alles andere übernehmen die Schichten darunter.
|
||||
Die Anwendungsschicht (z.B. der Browser) fordert nur die Seite an. Alles Weitere übernehmen die Schichten darunter.
|
||||
|
||||
**Austauschbarkeit:**
|
||||
WLAN statt Ethernet? Nur Schicht 1 ändert sich.
|
||||
HTTP/2 statt HTTP/1? Nur Schicht 4 ändert sich.
|
||||
Wechselt WLAN zu Ethernet, ändert sich nur Schicht 1.
|
||||
Löst HTTP/2 die Version HTTP/1 ab, ändert sich nur Schicht 4.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -545,9 +544,9 @@ SPEAKER NOTES:
|
||||
|
||||
---
|
||||
|
||||
# Exkurs: OSI vs. TCP/IP
|
||||
# OSI vs. TCP/IP
|
||||
|
||||

|
||||

|
||||
|
||||
OSI (7 Schichten) ist ein theoretisches Referenzmodell — TCP/IP (4 Schichten) beschreibt das reale Internet.
|
||||
|
||||
@@ -565,7 +564,7 @@ SPEAKER NOTES:
|
||||
<!-- _class: lead -->
|
||||
|
||||
# Die drei Adressen
|
||||
## IP, MAC und Port – wer braucht was?
|
||||
## IP, MAC und Port im Zusammenspiel
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -584,10 +583,8 @@ SPEAKER NOTES:
|
||||
- **Global eindeutig** (im gesamten Internet)
|
||||
- Identifiziert einen **Rechner**
|
||||
- **Bleibt gleich** auf dem gesamten Weg
|
||||
- Analogie: **Empfänger auf einem Brief**
|
||||
|
||||
Router lesen die IP und entscheiden:
|
||||
"Ist das für mich? Nein → in welche Richtung weiterleiten?"
|
||||
Router lesen die Ziel-IP und leiten das Paket in die passende Richtung weiter.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -608,9 +605,8 @@ aa:bb:cc:dd:ee:ff
|
||||
- **Lokal eindeutig** (nur im lokalen Netzwerk relevant)
|
||||
- Identifiziert eine **Netzwerkkarte**
|
||||
- **Ändert sich bei jedem Hop**
|
||||
- Analogie: **"Nächstes Postamt: XY"**
|
||||
|
||||
Funktioniert nur innerhalb eines Netzwerksegments.
|
||||
Sie funktioniert nur innerhalb eines Netzwerksegments.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -629,11 +625,11 @@ SPEAKER NOTES:
|
||||
|
||||

|
||||
|
||||
Ein Port identifiziert ein **Programm** auf einem Rechner — wie eine **Wohnungstür im Mehrfamilienhaus**.
|
||||
Ein Port identifiziert ein bestimmtes **Programm** (bzw. einen Dienst) auf einem Rechner.
|
||||
|
||||
- **80** → HTTP
|
||||
- **443** → HTTPS
|
||||
- **22** → SSH
|
||||
- **22** → SSH (Secure Shell)
|
||||
- **53** → DNS
|
||||
|
||||
<!--
|
||||
@@ -682,6 +678,11 @@ SPEAKER NOTES:
|
||||
|
||||
Drei Adressebenen lösen drei verschiedene Probleme:
|
||||
|
||||
**Port (Schicht 3 – Transport):**
|
||||
- 16 Bit → 65.535 mögliche Ports
|
||||
- Well-Known Ports (0–1023): HTTP=80, HTTPS=443, SSH=22
|
||||
- Ephemeral Ports (49152–65535): Dynamisch für Client-Verbindungen
|
||||
|
||||
**IP-Adresse (Schicht 2 – Internet):**
|
||||
- Hierarchisch aufgebaut: Netzwerk-Teil + Host-Teil
|
||||
- Router lesen nur den Netzwerk-Teil für Routing-Entscheidungen
|
||||
@@ -693,19 +694,14 @@ Drei Adressebenen lösen drei verschiedene Probleme:
|
||||
- Nur relevant für den **nächsten Hop** – wird bei jedem Router ersetzt
|
||||
- ARP (Address Resolution Protocol) übersetzt IP → MAC
|
||||
|
||||
**Port (Schicht 3 – Transport):**
|
||||
- 16 Bit → 65.535 mögliche Ports
|
||||
- Well-Known Ports (0–1023): HTTP=80, HTTPS=443, SSH=22
|
||||
- Ephemeral Ports (49152–65535): Dynamisch für Client-Verbindungen
|
||||
|
||||
**Warum ändert sich nur MAC?** IP ist das Endziel (Brief-Adresse), MAC ist der aktuelle Bote (wer trägt den Brief gerade?).
|
||||
**Nur die MAC-Adresse ändert sich unterwegs:** Die IP bezeichnet das Endziel und bleibt konstant, die MAC nur den jeweils nächsten Hop und wird an jedem Router ersetzt.
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: lead -->
|
||||
|
||||
# Die Reise eines Klicks
|
||||
## Was passiert, wenn Sie `www.hdm-stuttgart.de` aufrufen?
|
||||
## Was passiert, wenn ihr `www.hdm-stuttgart.de` aufruft?
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -719,13 +715,13 @@ SPEAKER NOTES:
|
||||
|
||||
# Das Szenario
|
||||
|
||||
Sie sind im WLAN der HdM und rufen auf:
|
||||
Ihr seid im WLAN der HdM und ruft auf:
|
||||
|
||||
```
|
||||
https://www.hdm-stuttgart.de
|
||||
```
|
||||
|
||||
**Zwischen Enter und fertiger Seite:** ~200 Millisekunden.
|
||||
Zwischen Enter und fertiger Seite vergehen rund 200 Millisekunden.
|
||||
|
||||
In dieser Zeit passieren hunderte Operationen.
|
||||
|
||||
@@ -781,11 +777,11 @@ SPEAKER NOTES:
|
||||
www.hdm-stuttgart.de → 212.132.79.37
|
||||
```
|
||||
|
||||
Ihr Laptop fragt sich durch:
|
||||
Euer Laptop arbeitet die Quellen der Reihe nach ab:
|
||||
|
||||
1. **Browser-Cache:** "War ich da kürzlich?" → Nein
|
||||
2. **OS-Cache:** "Kennt das Betriebssystem die IP?" → Nein
|
||||
3. **Router/Provider:** DNS-Server wird gefragt
|
||||
1. **Browser-Cache** prüfen → kein Eintrag
|
||||
2. **OS-Cache** prüfen → kein Eintrag
|
||||
3. **Router/Provider:** DNS-Server anfragen
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -802,12 +798,12 @@ SPEAKER NOTES:
|
||||
|
||||

|
||||
|
||||
**Dezentral:** Niemand kennt alles.
|
||||
DNS ist **dezentral** organisiert: Kein Server kennt alle Namen.
|
||||
|
||||
Jede Ebene kennt nur die nächste:
|
||||
Jede Ebene verweist nur auf die Ebene darunter:
|
||||
|
||||
- Root → .de, .com, .org
|
||||
- .de → alle .de-Domains
|
||||
- Root → TLDs (Top-Level-Domains: .de, .com, .org)
|
||||
- .de → autoritative Server jeder .de-Domain
|
||||
- hdm-stuttgart.de → www, mail, …
|
||||
|
||||
<!--
|
||||
@@ -842,7 +838,7 @@ SPEAKER NOTES:
|
||||
|
||||
# DNS ist selbst Netzwerk
|
||||
|
||||
Die DNS-Anfrage ist ein ganz normales Paket:
|
||||
Die DNS-Anfrage ist ein gewöhnliches Paket:
|
||||
|
||||
| Eigenschaft | Wert |
|
||||
|-------------|------|
|
||||
@@ -858,7 +854,7 @@ SPEAKER NOTES:
|
||||
- DNS = normales Netzwerk-Protokoll
|
||||
- Nutzt UDP (schneller, kleine Anfragen)
|
||||
- Port 53
|
||||
- Wird auch verpackt: UDP→IP→Ethernet→Bits
|
||||
- Wird auch verpackt: UDP→IP→Ethernet→Bit
|
||||
-->
|
||||
|
||||
---
|
||||
@@ -873,7 +869,7 @@ www.hdm-stuttgart.de = 212.132.79.37
|
||||
|
||||
Diese Information wird gecached (für Minuten bis Stunden).
|
||||
|
||||
**Nächster Schritt:** Verbindung aufbauen.
|
||||
Der nächste Schritt ist der Verbindungsaufbau.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -900,7 +896,7 @@ SPEAKER NOTES:
|
||||
|
||||
---
|
||||
|
||||
# Warum ein Handshake?
|
||||
# Zweck des Handshakes
|
||||
|
||||
TCP ist **verbindungsorientiert**:
|
||||
|
||||
@@ -909,9 +905,7 @@ TCP ist **verbindungsorientiert**:
|
||||
- Verlorene Pakete können erkannt und neu angefordert werden
|
||||
|
||||
**Analogie:**
|
||||
Telefonat: Klingeln → Abheben → "Hallo?" → Gespräch beginnt
|
||||
|
||||
Nicht: Einfach losreden und hoffen, dass jemand zuhört.
|
||||
Telefonat: Klingeln → Abheben → Gespräch beginnt
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -971,7 +965,7 @@ Der Handshake synchronisiert **Sequenznummern** – essenziell für TCPs Zuverl
|
||||
- SYN-Flood-Attacke: Millionen SYNs ohne ACK → Server-Ressourcen erschöpft
|
||||
- Schutz: SYN-Cookies (Server speichert keinen State bis ACK kommt)
|
||||
|
||||
**Verbindungsabbau:** 4-Way-Handshake (FIN → ACK → FIN → ACK) oder RST für sofortigen Abbruch.
|
||||
**Verbindungsabbau:** 4-Way-Handshake (FIN = Finish → ACK → FIN → ACK) oder RST (Reset) für sofortigen Abbruch.
|
||||
|
||||
---
|
||||
|
||||
@@ -981,7 +975,7 @@ Der Handshake synchronisiert **Sequenznummern** – essenziell für TCPs Zuverl
|
||||
|
||||

|
||||
|
||||
**Jetzt erst** kann HTTP gesprochen werden.
|
||||
Erst jetzt kann HTTP übertragen werden.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -1006,10 +1000,10 @@ SPEAKER NOTES:
|
||||
|
||||
---
|
||||
|
||||
# Was Ihr Browser sendet
|
||||
# Was euer Browser sendet
|
||||
|
||||
```http
|
||||
GET / HTTP/1.1
|
||||
GET / HTTP/2.0
|
||||
Host: www.hdm-stuttgart.de
|
||||
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)
|
||||
Accept: text/html
|
||||
@@ -1017,19 +1011,19 @@ Accept-Language: de-DE
|
||||
Connection: keep-alive
|
||||
```
|
||||
|
||||
~200 Bytes Text.
|
||||
Der Request umfasst rund 200 Byte Text.
|
||||
|
||||
**GET** = "Gib mir" (im Gegensatz zu POST = "Nimm das")
|
||||
**/** = "Die Startseite"
|
||||
**GET** ruft Daten ab (im Gegensatz zu **POST**, das Daten sendet).
|
||||
**/** bezeichnet die Startseite.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- HTTP-Request: lesbar, menschlich verständlich
|
||||
- GET = "hol mir was" (POST = "hier Daten für Sie")
|
||||
- GET = "hol mir was" (POST = "hier Daten für euch")
|
||||
- "/" = Wurzel = Startseite
|
||||
- HTTP/1.1 = Protokollversion
|
||||
- HTTP/2.0 = Protokollversion
|
||||
- Header: Kontext (Host, Browser, Sprache)
|
||||
- ~200 Bytes Text → müssen durchs Internet
|
||||
- ~200 Byte Text → müssen durchs Internet
|
||||
-->
|
||||
|
||||
---
|
||||
@@ -1041,7 +1035,7 @@ SPEAKER NOTES:
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- 200 Bytes Request → was passiert damit?
|
||||
- 200 Byte Request → was passiert damit?
|
||||
- Schicht für Schicht verpacken
|
||||
-->
|
||||
|
||||
@@ -1109,13 +1103,16 @@ SPEAKER NOTES:
|
||||
|
||||
---
|
||||
|
||||
# Woher kennt Ihr Laptop die Router-MAC?
|
||||
|
||||
<!-- _class: dimmed -->
|
||||
|
||||
# Router-MAC per ARP ermitteln
|
||||
|
||||
**ARP** – Address Resolution Protocol
|
||||
|
||||

|
||||
|
||||
Das passiert automatisch. Die Info wird gecached.
|
||||
Das geschieht automatisch. Die Information wird gecached.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -1130,7 +1127,7 @@ SPEAKER NOTES:
|
||||
|
||||
# Layer 1: Physical
|
||||
|
||||
Frame wird zu **Bits** – Bits werden zu Signalen:
|
||||
Frame wird zu **Bit** – Bit werden zu Signalen:
|
||||
|
||||
| Medium | Signal |
|
||||
|--------|--------|
|
||||
@@ -1142,12 +1139,12 @@ Frame wird zu **Bits** – Bits werden zu Signalen:
|
||||
01001000 01010100 01010100 01010000 ...
|
||||
```
|
||||
|
||||
Ab hier übernimmt die Physik.
|
||||
Ab Schicht 1 erfolgt die Übertragung physikalisch.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- Ganz unten: Physik
|
||||
- Frame → Bits → Signale
|
||||
- Frame → Bit → Signale
|
||||
- Je nach Medium:
|
||||
- Kupfer: Spannung High/Low
|
||||
- Glasfaser: Licht an/aus
|
||||
@@ -1170,22 +1167,22 @@ SPEAKER NOTES:
|
||||
|
||||
---
|
||||
|
||||
# Der erste Hop: Ihr Router
|
||||
# Der erste Hop: Euer Router
|
||||
|
||||
**Laptop** → [Frame] → **Router**
|
||||
|
||||
Der Router empfängt:
|
||||
Der Router verarbeitet das Frame in drei Schritten:
|
||||
|
||||
1. **Layer 1:** Signale → Bits
|
||||
2. **Layer 2:** Frame prüfen. MAC okay? → Auspacken
|
||||
3. **Layer 3:** IP lesen. "212.132.79.37 – nicht mein Netz"
|
||||
1. **Layer 1:** Signale werden zu Bit.
|
||||
2. **Layer 2:** Frame und MAC-Adresse werden geprüft, dann ausgepackt.
|
||||
3. **Layer 3:** Die Ziel-IP liegt außerhalb des lokalen Netzes.
|
||||
|
||||
**Routing-Entscheidung:** "Ich schicke es Richtung Internet."
|
||||
**Routing-Entscheidung:** Das Paket geht Richtung Internet weiter.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- Router empfängt Frame
|
||||
- Physik: Signale → Bits
|
||||
- Physik: Signale → Bit
|
||||
- Ethernet: MAC okay? Prüfsumme okay? → auspacken
|
||||
- IP: Ziel-IP lesen → 212.132.79.37 → nicht mein Netz
|
||||
- Routing-Tabelle: In welche Richtung?
|
||||
@@ -1193,7 +1190,7 @@ SPEAKER NOTES:
|
||||
|
||||
---
|
||||
|
||||
# Der Router verpackt NEU
|
||||
# Der Router verpackt neu
|
||||
|
||||

|
||||
|
||||
@@ -1216,7 +1213,7 @@ SPEAKER NOTES:
|
||||
|
||||

|
||||
|
||||
Bei jedem Hop:
|
||||
Bei jedem Hop laufen drei Schritte ab:
|
||||
|
||||
1. Auspacken bis Layer 3 (IP)
|
||||
2. Routing-Entscheidung
|
||||
@@ -1252,14 +1249,14 @@ SPEAKER NOTES:
|
||||
|
||||

|
||||
|
||||
Jede Schicht prüft "ist das für mich?" und packt dann die nächste aus.
|
||||
Jede Schicht prüft, ob das Paket für sie bestimmt ist, und packt dann die nächste aus.
|
||||
|
||||
Am Ende versteht der Webserver: "Jemand will die Startseite."
|
||||
Am Ende erkennt der Webserver die Anfrage nach der Startseite.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- Schicht für Schicht auspacken:
|
||||
- Physik → Bits
|
||||
- Physik → Bit
|
||||
- Ethernet → Frame prüfen → auspacken
|
||||
- IP → Ziel-IP = meine? Ja → auspacken
|
||||
- TCP → Port 443 = Webserver-Prozess → auspacken
|
||||
@@ -1272,7 +1269,7 @@ SPEAKER NOTES:
|
||||
# Der Server antwortet
|
||||
|
||||
```http
|
||||
HTTP/1.1 200 OK
|
||||
HTTP/2.0 200 OK
|
||||
Content-Type: text/html; charset=UTF-8
|
||||
Content-Length: 45231
|
||||
|
||||
@@ -1283,13 +1280,13 @@ Content-Length: 45231
|
||||
...
|
||||
```
|
||||
|
||||
~45 KB HTML müssen jetzt zu Ihnen.
|
||||
Rund 45 KB HTML müssen nun zu euch übertragen werden.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- Antwort: 200 OK = alles gut
|
||||
- Content-Type: HTML
|
||||
- Content-Length: 45231 Bytes
|
||||
- Content-Length: 45231 Byte
|
||||
- Dann: eigentlicher HTML-Code
|
||||
-->
|
||||
|
||||
@@ -1297,7 +1294,7 @@ SPEAKER NOTES:
|
||||
|
||||
# Encapsulation beim Server
|
||||
|
||||
Der Server macht **dasselbe** – nur in die andere Richtung:
|
||||
Der Server durchläuft dieselben Schritte – nur in umgekehrter Richtung:
|
||||
|
||||

|
||||
|
||||
@@ -1316,7 +1313,7 @@ SPEAKER NOTES:
|
||||
|
||||

|
||||
|
||||
Gleiches Spiel wie der Hinweg:
|
||||
Der Rückweg funktioniert wie der Hinweg:
|
||||
|
||||
- Hop für Hop durchs Internet
|
||||
- **IP bleibt gleich** (Start/Ziel)
|
||||
@@ -1331,13 +1328,13 @@ SPEAKER NOTES:
|
||||
|
||||
---
|
||||
|
||||
# Decapsulation bei Ihnen
|
||||
# Decapsulation bei euch
|
||||
|
||||

|
||||
|
||||
Rückweg = Encapsulation umgekehrt.
|
||||
Der Rückweg ist die umgekehrte Encapsulation.
|
||||
|
||||
Jede Schicht prüft "ist das für mich?" und packt dann die nächste aus.
|
||||
Jede Schicht prüft, ob das Paket für sie bestimmt ist, und packt dann die nächste aus.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -1406,7 +1403,7 @@ Beide sind Transport-Protokolle (Schicht 3), aber mit fundamental unterschiedlic
|
||||
**UDP (User Datagram Protocol):**
|
||||
- Verbindungslos (Fire-and-Forget)
|
||||
- Keine Sequenznummern, keine ACKs
|
||||
- Header nur 8 Bytes (TCP: 20+ Bytes)
|
||||
- Header nur 8 Byte (TCP: 20+ Byte)
|
||||
- Anwendung muss selbst für Zuverlässigkeit sorgen
|
||||
|
||||
| Anwendung | Protokoll | Grund |
|
||||
@@ -1420,7 +1417,7 @@ Beide sind Transport-Protokolle (Schicht 3), aber mit fundamental unterschiedlic
|
||||
|
||||
---
|
||||
|
||||
# Warum UDP bei Video-Calls?
|
||||
# UDP bei Video-Calls
|
||||
|
||||
**Szenario:** Ein Paket geht verloren.
|
||||
|
||||
@@ -1441,13 +1438,15 @@ SPEAKER NOTES:
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: dimmed -->
|
||||
|
||||
# MTU & Fragmentierung
|
||||
|
||||
**MTU** = Maximum Transmission Unit
|
||||
|
||||
Ethernet-Frame kann maximal **1500 Bytes** Nutzdaten transportieren.
|
||||
Ein Ethernet-Frame kann maximal **1500 Byte** Nutzdaten transportieren.
|
||||
|
||||
**Problem:** Ein Foto hat 3.000.000 Bytes.
|
||||
**Problem:** Ein Foto hat 3.000.000 Byte.
|
||||
|
||||
**Lösung:** TCP zerschneidet die Daten in ~2000 Segmente.
|
||||
Jedes Segment hat eine Sequenznummer.
|
||||
@@ -1456,7 +1455,7 @@ Der Empfänger setzt sie zusammen.
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- MTU = physikalisches Limit
|
||||
- Ethernet-Frame: max 1500 Bytes Nutzdaten
|
||||
- Ethernet-Frame: max 1500 Byte Nutzdaten
|
||||
- Webseite 100KB, Video Gigabytes?
|
||||
- TCP zerschneidet in passende Stücke
|
||||
- Jedes mit Sequenznummer
|
||||
@@ -1465,21 +1464,24 @@ SPEAKER NOTES:
|
||||
|
||||
---
|
||||
|
||||
|
||||
<!-- _class: klausur -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||
# HTTP-Methoden
|
||||
|
||||
HTTP-Methoden beschreiben, **was** der Client mit einer Ressource tun will.
|
||||
|
||||
| Methode | Bedeutung | Beispiel |
|
||||
|---------|-----------|----------|
|
||||
| **GET** | Daten abrufen | Seite laden |
|
||||
| **POST** | Daten senden | Formular absenden |
|
||||
| **PUT** | Daten ersetzen | Profil aktualisieren |
|
||||
| **DELETE** | Daten löschen | Account löschen |
|
||||
| Methode | Bedeutung | Beispiel |
|
||||
|---------|-----------|-----------------------------------------------|
|
||||
| **GET** | Daten abrufen | Seite laden `GET /index.html HTTP/2.0` |
|
||||
| **POST** | Daten senden | Formular absenden `POST /login HTTP/2.0` |
|
||||
| **PUT** | Daten ersetzen | Profil aktualisieren `PUT /users/42 HTTP/2.0` |
|
||||
| **DELETE** | Daten löschen | Account löschen `DELETE /users/42 HTTP/2.0` |
|
||||
|
||||
<small>CRUD = Create, Read, Update, Delete</small>
|
||||
|
||||
```http
|
||||
GET /index.html HTTP/1.1
|
||||
POST /login HTTP/1.1
|
||||
```
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -1518,7 +1520,7 @@ HTTP-Methoden definieren die **Semantik** der Anfrage – was der Client vom Ser
|
||||
**Idempotent:** Mehrfaches Ausführen hat denselben Effekt wie einmaliges (GET, PUT, DELETE).
|
||||
**Safe:** Ändert nichts am Server (nur GET, HEAD, OPTIONS).
|
||||
|
||||
**REST-Prinzip:** URLs identifizieren Ressourcen, Methoden definieren Aktionen.
|
||||
**REST-Prinzip** (Representational State Transfer): URLs identifizieren Ressourcen, Methoden definieren Aktionen.
|
||||
```
|
||||
GET /users/42 → Benutzer 42 abrufen
|
||||
PUT /users/42 → Benutzer 42 vollständig ersetzen
|
||||
@@ -1528,14 +1530,18 @@ POST /users → Neuen Benutzer erstellen
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: klausur -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||
# HTTP Status-Codes
|
||||
|
||||
Jede HTTP-Response enthält einen dreistelligen Status-Code — die erste Ziffer verrät die Kategorie.
|
||||
|
||||
```http
|
||||
HTTP/1.1 200 OK
|
||||
HTTP/1.1 404 Not Found
|
||||
HTTP/1.1 500 Internal Server Error
|
||||
HTTP/2.0 200 OK
|
||||
HTTP/2.0 404 Not Found
|
||||
HTTP/2.0 500 Internal Server Error
|
||||
```
|
||||
|
||||
| Code-Bereich | Bedeutung |
|
||||
@@ -1582,10 +1588,13 @@ Die erste Ziffer kategorisiert die Antwort:
|
||||
- **301 vs. 302:** 301 = permanent umgezogen (Cache-fähig), 302 = temporär (nicht cachen)
|
||||
- **304 Not Modified:** Browser hat Cache, Server bestätigt: noch aktuell → spart Bandbreite
|
||||
|
||||
**API-Design:** Korrekte Status-Codes sind wichtig für Clients. `200` bei Fehler mit `{"error": "..."}` im Body ist schlechtes Design.
|
||||
**API-Design** (Application Programming Interface): Korrekte Status-Codes sind wichtig für Clients. `200` bei Fehler mit `{"error": "..."}` im Body ist schlechtes Design.
|
||||
|
||||
---
|
||||
|
||||
|
||||
<!-- _class: dimmed -->
|
||||
|
||||
# Zusammenfassung Teil 1
|
||||
|
||||
**Der Ablauf:**
|
||||
@@ -1632,11 +1641,11 @@ Die vier Kernkonzepte für Web-Entwickelnde:
|
||||
- Caching auf jeder Ebene (TTL = Time To Live)
|
||||
|
||||
**2. TCP-Verbindungsaufbau:**
|
||||
- 3-Way-Handshake vor jeder HTTP-Anfrage (HTTP/1.1)
|
||||
- 3-Way-Handshake vor jeder HTTP(S)-Anfrage (HTTP/2.0)
|
||||
- Keep-Alive: Verbindung bleibt offen für mehrere Requests
|
||||
- HTTP/2: Multiplexing – viele Requests über eine Verbindung
|
||||
|
||||
**3. HTTP Request/Response:**
|
||||
**3. HTTP(S) Request/Response:**
|
||||
```
|
||||
Request: Methode + URL + Header + (Body)
|
||||
Response: Status + Header + Body
|
||||
@@ -1696,7 +1705,7 @@ HTML definiert die Struktur – was ist auf der Seite. CSS definiert das Aussehe
|
||||
|
||||
---
|
||||
|
||||
# Was ist CSS?
|
||||
# CSS im Überblick
|
||||
|
||||

|
||||
|
||||
@@ -1709,7 +1718,7 @@ p {
|
||||
}
|
||||
```
|
||||
|
||||
- Trennt **Inhalt** (HTML) von **Darstellung** (CSS)
|
||||
- Trennt **Inhalt** (HTML – Hypertext Markup Language) von **Darstellung** (CSS)
|
||||
- "Cascading" = Regeln können überschrieben werden
|
||||
- Eine CSS-Datei kann viele HTML-Seiten stylen
|
||||
|
||||
@@ -1729,7 +1738,7 @@ Vorteil: Ihr könnt das Design der ganzen Website ändern, indem ihr eine Datei
|
||||
|
||||
# CSS einbinden
|
||||
|
||||
**Option 1: Externe Datei** ✓
|
||||
**Option 1: Externe Datei** (empfohlen)
|
||||
```html
|
||||
<link rel="stylesheet" href="style.css">
|
||||
```
|
||||
@@ -1739,7 +1748,7 @@ Vorteil: Ihr könnt das Design der ganzen Website ändern, indem ihr eine Datei
|
||||
<style>p { color: blue; }</style>
|
||||
```
|
||||
|
||||
**Option 3: Inline** ✗
|
||||
**Option 3: Inline** (vermeiden)
|
||||
```html
|
||||
<p style="color: blue;">...</p>
|
||||
```
|
||||
@@ -1875,7 +1884,7 @@ Eine Klasse kann auf beliebig viele Elemente angewendet werden. Ein Element kann
|
||||
|
||||
**Raute** vor dem Namen = ID
|
||||
|
||||
⚠️ IDs sollten **einmalig** pro Seite sein.
|
||||
**Achtung:** IDs sollten **einmalig** pro Seite sein.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -1923,7 +1932,7 @@ Element.Klasse: Das Element muss beides sein. "p.wichtig" heißt: nur p-Elemente
|
||||
|
||||
---
|
||||
|
||||
# Spezifität: Welche Regel gewinnt?
|
||||
# Spezifität von Selektoren
|
||||
|
||||

|
||||
|
||||
@@ -1979,7 +1988,7 @@ Spezifität bestimmt, welche CSS-Regel gewinnt, wenn mehrere auf dasselbe Elemen
|
||||
- Eine ID schlägt jede Anzahl von Klassen
|
||||
- `!important` bricht alles → vermeiden, da schwer zu überschreiben
|
||||
|
||||
**Best Practice:** Flache Spezifität anstreben. BEM-Methodik (`.block__element--modifier`) hält Spezifität gleichmäßig niedrig.
|
||||
**Best Practice:** Flache Spezifität anstreben. BEM-Methodik (Block Element Modifier, `.block__element--modifier`) hält Spezifität gleichmäßig niedrig.
|
||||
|
||||
---
|
||||
|
||||
@@ -2059,22 +2068,19 @@ Best Practice: Setzt das global für alle Elemente.
|
||||
|
||||

|
||||
|
||||
CSS kennt fünf Notationen für Farben: **Keyword**, **Hex**, **RGB**, **RGBA** (mit Transparenz) und **HSL**.
|
||||
CSS kennt fünf Farb-Notationen: **Keyword**, **Hex**, **RGB**, **RGBA** und **HSL**.
|
||||
|
||||
```css
|
||||
/* Keyword */
|
||||
color: red;
|
||||
color: rebeccapurple;
|
||||
|
||||
/* Hex */
|
||||
color: #FF0000;
|
||||
color: #F00;
|
||||
|
||||
/* RGB / RGBA */
|
||||
/* RGB = Red Green Blue, RGBA mit Alpha */
|
||||
color: rgb(255, 0, 0);
|
||||
color: rgba(255, 0, 0, 0.5);
|
||||
|
||||
/* HSL */
|
||||
/* HSL = Hue, Saturation, Lightness */
|
||||
color: hsl(0, 100%, 50%);
|
||||
```
|
||||
|
||||
@@ -2307,7 +2313,7 @@ Einheiten: rem für Schrift, relative Einheiten für Layout.
|
||||
|
||||
# Fragen & Diskussion
|
||||
|
||||
**Nächster Termin:** 24.01.2026 – JavaScript
|
||||
**Nächstes Thema:** JavaScript
|
||||
|
||||
**Kontakt:** lb-czechowski@hdm-stuttgart.de
|
||||
|
||||
|
||||
@@ -98,7 +98,7 @@ Hochschule der Medien Stuttgart
|
||||
|
||||
<!-- _class: lead -->
|
||||
|
||||
# Kapitel 3 – 24.01.2026
|
||||
# Kapitel 3
|
||||
## Interaktivität & JavaScript
|
||||
|
||||
---
|
||||
@@ -119,16 +119,15 @@ Hochschule der Medien Stuttgart
|
||||
|
||||
---
|
||||
|
||||
# Was ist JavaScript?
|
||||
# JavaScript im Überblick
|
||||
|
||||
**Die einzige Programmiersprache, die im Browser läuft!**
|
||||
JavaScript ist die einzige Programmiersprache, die nativ im Browser läuft.
|
||||
|
||||
- **1995:** In 10 Tagen entwickelt (Brendan Eich, Netscape)
|
||||
- **Heute:** Überall – Browser, Server, Apps, IoT
|
||||
|
||||
**Nicht verwechseln:**
|
||||
- Java ≠ JavaScript (komplett unterschiedlich!)
|
||||
- "JavaScript ist zu Java wie Carpet zu Car"
|
||||
- Java und JavaScript sind zwei völlig verschiedene Sprachen.
|
||||
|
||||
<!--
|
||||
Ursprünglich "Mocha", dann "LiveScript", dann "JavaScript" (Marketing!)
|
||||
@@ -159,7 +158,7 @@ ES6 = großes Update mit vielen Features
|
||||
|
||||
# JavaScript einbinden
|
||||
|
||||
**Option 1: Externe Datei (empfohlen!)**
|
||||
**Option 1: Externe Datei (empfohlen)**
|
||||
```html
|
||||
<body>
|
||||
<!-- Inhalt -->
|
||||
@@ -174,7 +173,7 @@ ES6 = großes Update mit vielen Features
|
||||
</script>
|
||||
```
|
||||
|
||||
⚠️ Script am **Ende** des `<body>` – damit HTML zuerst lädt!
|
||||
**Wichtig:** Das Script gehört ans **Ende** des `<body>`, damit das HTML zuerst lädt.
|
||||
|
||||
<!--
|
||||
Externe Datei = wiederverwendbar, cachebar
|
||||
@@ -184,7 +183,7 @@ Oder: defer-Attribut
|
||||
|
||||
---
|
||||
|
||||
# Die Konsole: Euer bester Freund
|
||||
# Die JavaScript-Konsole
|
||||
|
||||
**Browser DevTools → Console**
|
||||
- Windows/Linux: `F12` oder `Strg+Shift+I`
|
||||
@@ -196,7 +195,7 @@ console.log(42);
|
||||
console.log("Die Antwort ist:", 42);
|
||||
```
|
||||
|
||||
**Direkt in der Konsole tippen und Enter!**
|
||||
Befehle lassen sich direkt in der Konsole eingeben und mit Enter ausführen.
|
||||
|
||||
<!--
|
||||
Console = REPL (Read-Eval-Print-Loop)
|
||||
@@ -348,20 +347,20 @@ true || false // true (ODER)
|
||||
|
||||
**In der Browser-Konsole:**
|
||||
|
||||
1. Erstellen Sie Variablen für sich:
|
||||
1. Erstellt Variablen für euch:
|
||||
```javascript
|
||||
const name = "Your Name";
|
||||
let age = 20;
|
||||
const hobbies = ["Hobby1", "Hobby2"];
|
||||
```
|
||||
|
||||
2. Gib sie aus:
|
||||
2. Gebt sie aus:
|
||||
```javascript
|
||||
console.log(`I am ${name}, ${age} years old.`);
|
||||
console.log("My hobbies:", hobbies);
|
||||
```
|
||||
|
||||
3. Erstelle ein `person`-Objekt und greife auf Properties zu
|
||||
3. Erstellt ein `person`-Objekt und greift auf Properties zu
|
||||
|
||||
---
|
||||
|
||||
@@ -491,7 +490,7 @@ Funktionale Programmierung, Original-Array bleibt unverändert
|
||||
|
||||
---
|
||||
|
||||
# Was ist das DOM?
|
||||
# Das DOM im Überblick
|
||||
|
||||
**D**ocument **O**bject **M**odel
|
||||
|
||||
@@ -512,7 +511,7 @@ Jedes Element ist ein Objekt
|
||||
# Elemente finden
|
||||
|
||||
```javascript
|
||||
// Einzelnes Element (erstes gefundene)
|
||||
// Einzelnes Element (erstes gefundenes)
|
||||
document.getElementById("meinId");
|
||||
document.querySelector(".meineKlasse");
|
||||
document.querySelector("nav > a");
|
||||
@@ -632,10 +631,10 @@ remove = aus DOM entfernen
|
||||
|
||||
**Aufgaben (in script.js):**
|
||||
|
||||
1. Ändere den Text von `#output`
|
||||
2. Füge 5 `<li>`-Elemente zur Liste hinzu (mit Schleife!)
|
||||
3. Gib jedem geraden Element eine Klasse `highlight`
|
||||
4. Style `.highlight` in CSS (z.B. andere Farbe)
|
||||
1. Ändert den Text von `#output`
|
||||
2. Fügt 5 `<li>`-Elemente zur Liste hinzu (mit Schleife)
|
||||
3. Gebt jedem geraden Element eine Klasse `highlight`
|
||||
4. Gestaltet `.highlight` in CSS (z. B. andere Farbe)
|
||||
|
||||
---
|
||||
|
||||
@@ -646,7 +645,7 @@ remove = aus DOM entfernen
|
||||
|
||||
---
|
||||
|
||||
# Was sind Events?
|
||||
# Events im Überblick
|
||||
|
||||
**NutzerInnen interagieren mit der Seite:**
|
||||
- Klicken
|
||||
@@ -654,7 +653,7 @@ remove = aus DOM entfernen
|
||||
- Scrollen
|
||||
- Formulare absenden
|
||||
|
||||
**JavaScript kann darauf reagieren!**
|
||||
JavaScript kann auf diese Ereignisse reagieren.
|
||||
|
||||
<!--
|
||||
Event = Ereignis
|
||||
@@ -784,9 +783,9 @@ toggleButton.addEventListener("click", () => {
|
||||
|
||||
// Button-Text ändern
|
||||
if (body.classList.contains("dark-mode")) {
|
||||
toggleButton.textContent = "☀️ Light Mode";
|
||||
toggleButton.textContent = "Light Mode";
|
||||
} else {
|
||||
toggleButton.textContent = "🌙 Dark Mode";
|
||||
toggleButton.textContent = "Dark Mode";
|
||||
}
|
||||
});
|
||||
```
|
||||
@@ -1002,21 +1001,21 @@ Frameworks für größere Apps, Komponenten-basiert
|
||||
|
||||
---
|
||||
|
||||
# Ihr könnt jetzt...
|
||||
# Das könnt ihr jetzt
|
||||
|
||||
- Den historischen Kontext von IT verstehen
|
||||
- Erklären wie das Internet funktioniert
|
||||
- HTML-Seiten strukturieren
|
||||
- CSS für Layout und Design nutzen
|
||||
- JavaScript für Interaktivität einsetzen
|
||||
- **Mit EntwicklerInnen auf Augenhöhe sprechen!**
|
||||
- **Mit EntwicklerInnen auf Augenhöhe sprechen**
|
||||
|
||||
---
|
||||
|
||||
# Feedback – Eure Meinung zählt!
|
||||
# Feedback
|
||||
|
||||
Euer ehrliches Feedback hilft mir, den Kurs zu verbessern.
|
||||
**Es gibt keine falschen Antworten!**
|
||||
Es gibt keine falschen Antworten.
|
||||
|
||||
- Was hat gut funktioniert?
|
||||
- Was könnte besser sein?
|
||||
@@ -1028,7 +1027,7 @@ Euer ehrliches Feedback hilft mir, den Kurs zu verbessern.
|
||||
|
||||
<!-- _class: lead -->
|
||||
|
||||
# Danke!
|
||||
# Danke
|
||||
|
||||
**Kontakt:** lb-czechowski@hdm-stuttgart.de
|
||||
|
||||
|
||||
@@ -6,47 +6,70 @@
|
||||
<style>
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, sans-serif; }
|
||||
body { padding: 30px 40px; display: inline-block; }
|
||||
.wrap { display: flex; gap: 36px; align-items: flex-start; }
|
||||
.col { display: flex; flex-direction: column; gap: 4px; }
|
||||
h3 { margin: 0 0 10px; font-size: 1.1rem; color: #1a1a2e; text-align: center; }
|
||||
.headers {
|
||||
display: grid;
|
||||
grid-template-columns: 240px 240px;
|
||||
column-gap: 36px;
|
||||
margin-bottom: 10px;
|
||||
}
|
||||
.headers h3 { margin: 0; font-size: 1.1rem; color: #1a1a2e; text-align: center; }
|
||||
.grid {
|
||||
display: grid;
|
||||
grid-template-columns: 240px 240px;
|
||||
grid-template-rows: repeat(7, 48px);
|
||||
column-gap: 36px;
|
||||
row-gap: 6px;
|
||||
}
|
||||
.box {
|
||||
border: 2px solid #4a4a6a;
|
||||
padding: 10px 20px;
|
||||
min-width: 230px;
|
||||
font-size: 0.95rem;
|
||||
background: #f3f4f6;
|
||||
border-radius: 4px;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
justify-content: center;
|
||||
border-radius: 4px;
|
||||
font-size: 0.95rem;
|
||||
text-align: center;
|
||||
padding: 0 12px;
|
||||
}
|
||||
.osi .box { background: #dbeafe; border-color: #1e40af; color: #1e3a8a; }
|
||||
.tcpip .box { background: #fce7d6; border-color: #c2410c; color: #7c2d12; font-weight: 600; }
|
||||
.tcpip .app { min-height: 126px; }
|
||||
.tcpip .trans { min-height: 40px; }
|
||||
.tcpip .net { min-height: 40px; }
|
||||
.tcpip .link { min-height: 82px; }
|
||||
.osi {
|
||||
background: #dbeafe;
|
||||
border-color: #1e40af;
|
||||
color: #1e3a8a;
|
||||
}
|
||||
.tcpip {
|
||||
background: #fce7d6;
|
||||
border-color: #c2410c;
|
||||
color: #7c2d12;
|
||||
font-weight: 600;
|
||||
}
|
||||
/* OSI: column 1, one box per row */
|
||||
.o7 { grid-area: 1 / 1; } .o6 { grid-area: 2 / 1; } .o5 { grid-area: 3 / 1; }
|
||||
.o4 { grid-area: 4 / 1; } .o3 { grid-area: 5 / 1; } .o2 { grid-area: 6 / 1; }
|
||||
.o1 { grid-area: 7 / 1; }
|
||||
/* TCP/IP: column 2, each block spans its OSI equivalents */
|
||||
.t-app { grid-area: 1 / 2 / 4 / 2; } /* OSI 5-7 */
|
||||
.t-tra { grid-area: 4 / 2 / 5 / 2; } /* OSI 4 */
|
||||
.t-net { grid-area: 5 / 2 / 6 / 2; } /* OSI 3 */
|
||||
.t-link { grid-area: 6 / 2 / 8 / 2; } /* OSI 1-2 */
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="wrap">
|
||||
<div class="col osi">
|
||||
<h3>OSI (7 Schichten)</h3>
|
||||
<div class="box">7. Anwendung</div>
|
||||
<div class="box">6. Darstellung</div>
|
||||
<div class="box">5. Sitzung</div>
|
||||
<div class="box">4. Transport</div>
|
||||
<div class="box">3. Vermittlung</div>
|
||||
<div class="box">2. Sicherung</div>
|
||||
<div class="box">1. Bitübertragung</div>
|
||||
</div>
|
||||
<div class="col tcpip">
|
||||
<h3>TCP/IP (4 Schichten)</h3>
|
||||
<div class="box app">Anwendung</div>
|
||||
<div class="box trans">Transport</div>
|
||||
<div class="box net">Internet</div>
|
||||
<div class="box link">Netzzugang</div>
|
||||
</div>
|
||||
<div class="headers">
|
||||
<h3>OSI (7 Schichten)</h3>
|
||||
<h3>TCP/IP (4 Schichten)</h3>
|
||||
</div>
|
||||
<div class="grid">
|
||||
<div class="box osi o7">7. Anwendung</div>
|
||||
<div class="box osi o6">6. Darstellung</div>
|
||||
<div class="box osi o5">5. Sitzung</div>
|
||||
<div class="box osi o4">4. Transport</div>
|
||||
<div class="box osi o3">3. Vermittlung</div>
|
||||
<div class="box osi o2">2. Sicherung</div>
|
||||
<div class="box osi o1">1. Bitübertragung</div>
|
||||
|
||||
<div class="box tcpip t-app">Anwendung</div>
|
||||
<div class="box tcpip t-tra">Transport</div>
|
||||
<div class="box tcpip t-net">Internet</div>
|
||||
<div class="box tcpip t-link">Netzzugang</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
|
Before Width: | Height: | Size: 65 KiB After Width: | Height: | Size: 63 KiB |
@@ -5,18 +5,17 @@
|
||||
<title>Port-Highlight</title>
|
||||
<style>
|
||||
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, sans-serif; }
|
||||
body { padding: 28px 40px; display: inline-block; }
|
||||
body { padding: 28px 40px 110px; display: inline-block; }
|
||||
.line {
|
||||
font-family: ui-monospace, "SF Mono", monospace;
|
||||
font-size: 2.2rem;
|
||||
color: #1a1a2e;
|
||||
display: flex;
|
||||
align-items: center;
|
||||
align-items: baseline;
|
||||
}
|
||||
.port-wrap {
|
||||
display: inline-flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
position: relative;
|
||||
display: inline-block;
|
||||
margin-left: 4px;
|
||||
}
|
||||
.port {
|
||||
@@ -26,11 +25,20 @@
|
||||
border-radius: 4px;
|
||||
font-weight: 700;
|
||||
}
|
||||
.below {
|
||||
position: absolute;
|
||||
top: 100%;
|
||||
left: 50%;
|
||||
transform: translateX(-50%);
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
align-items: center;
|
||||
margin-top: 4px;
|
||||
}
|
||||
.connector {
|
||||
width: 2px;
|
||||
height: 18px;
|
||||
background: #c2410c;
|
||||
margin-top: 4px;
|
||||
}
|
||||
.caption-text {
|
||||
background: #fed7aa;
|
||||
@@ -42,16 +50,13 @@
|
||||
font-size: 1rem;
|
||||
font-family: system-ui, sans-serif;
|
||||
margin-top: 2px;
|
||||
white-space: nowrap;
|
||||
}
|
||||
</style>
|
||||
</head>
|
||||
<body>
|
||||
<div class="line">
|
||||
212.132.79.37:<div class="port-wrap">
|
||||
<span class="port">443</span>
|
||||
<div class="connector"></div>
|
||||
<div class="caption-text">Port 443 = HTTPS</div>
|
||||
</div>
|
||||
212.132.79.37:<span class="port-wrap"><span class="port">443</span><span class="below"><span class="connector"></span><span class="caption-text">Port 443 = HTTPS</span></span></span>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
|
Before Width: | Height: | Size: 17 KiB After Width: | Height: | Size: 17 KiB |
@@ -104,7 +104,7 @@
|
||||
<!-- SYN-ACK -->
|
||||
<div class="msg arrow-left msg-reverse" style="left: 83px; right: 80px; top: 180px;">
|
||||
<div class="label reply" style="left: 50%; transform: translateX(-50%);">SYN-ACK · Seq=5000, Ack=1001</div>
|
||||
<div class="quote" style="left: 50%; transform: translateX(-50%);">"OK, ich starte bei 5000"</div>
|
||||
<div class="quote" style="left: 50%; transform: translateX(-50%);">"OK, ich starte bei 5000 und erwarte 1001"</div>
|
||||
</div>
|
||||
|
||||
<!-- ACK -->
|
||||
@@ -113,7 +113,7 @@
|
||||
<div class="quote" style="left: 50%; transform: translateX(-50%);">"Verstanden, los geht's"</div>
|
||||
</div>
|
||||
|
||||
<div class="final">✓ Verbindung steht</div>
|
||||
<div class="final">Verbindung steht</div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
|
Before Width: | Height: | Size: 62 KiB After Width: | Height: | Size: 63 KiB |
@@ -5,7 +5,7 @@ paginate: true
|
||||
backgroundColor: #fff
|
||||
header: "Grundlagen IT- und Internettechnik (223015c)"
|
||||
footer: "Michael Czechowski – HdM Stuttgart – SoSe 2026"
|
||||
title: "Kapitel 1: Geschichte, Grundlagen & HTML"
|
||||
title: Grundlagen IT- und Internettechnik
|
||||
---
|
||||
<style>
|
||||
:root {
|
||||
@@ -20,13 +20,13 @@ section {
|
||||
font-size: 1.7rem;
|
||||
}
|
||||
h1 {
|
||||
color: #a02060; /* darker raspberry */
|
||||
color: #a02060;
|
||||
}
|
||||
section.invert h1 {
|
||||
color: #fff;
|
||||
}
|
||||
h2 {
|
||||
color: #1f2937; /* dark gray, almost black */
|
||||
color: #1f2937;
|
||||
}
|
||||
pre {
|
||||
background: #0f0f23;
|
||||
@@ -82,10 +82,9 @@ section.aufgabe footer {
|
||||
|
||||
<!-- _class: invert -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
<!-- _backgroundColor: black -->
|
||||
<!-- _backgroundColor: #000 -->
|
||||
|
||||

|
||||

|
||||
|
||||
# Grundlagen IT- und Internettechnik
|
||||
|
||||
@@ -103,39 +102,6 @@ Hochschule der Medien Stuttgart
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Die 5 Komponenten
|
||||
|
||||
| Komponente | Funktion |
|
||||
|------------|----------|
|
||||
| **Rechenwerk (ALU)** | Führt Berechnungen durch |
|
||||
| **Steuerwerk** | Interpretiert Befehle, steuert Ablauf |
|
||||
| **Speicherwerk** | Speichert Programme UND Daten |
|
||||
| **Ein-/Ausgabe** | Tastatur, Bildschirm, Netzwerk |
|
||||
| **Bus-System** | Verbindet alle Komponenten |
|
||||
|
||||
**Wichtig:** Programme und Daten **gemeinsam** im Speicher!
|
||||
|
||||
<!--
|
||||
VON-NEUMANN-ARCHITEKTUR (1945): Grundlage aller modernen Computer
|
||||
5 KOMPONENTEN:
|
||||
- ALU (Arithmetic Logic Unit): Rechnet (+, -, ×, ÷) und vergleicht (>, <, =)
|
||||
- Steuerwerk: Holt Befehle, dekodiert sie, steuert Ausführung (Fetch-Decode-Execute)
|
||||
- Speicherwerk: RAM (flüchtig) + ROM (permanent), enthält Code UND Daten
|
||||
- Ein-/Ausgabe (I/O): Tastatur, Maus, Bildschirm, Netzwerk, USB, Sensoren
|
||||
- Bus-System: Adressbus (wo), Datenbus (was), Steuerbus (wie)
|
||||
KERNPRINZIP: Stored Program Concept - Programme im selben Speicher wie Daten
|
||||
VORHER (z.B. ENIAC): Programme durch Umstecken von Kabeln, tagelange Arbeit
|
||||
NACHHER: Programme als austauschbare Daten → Flexibilität, Software-Industrie möglich
|
||||
PRÜFUNGSRELEVANT: 5 Komponenten benennen und erklären können, Stored Program Concept
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Von-Neumann-Architektur: Bedeutung
|
||||
|
||||
**Ohne Von-Neumann-Architektur:**
|
||||
@@ -173,117 +139,18 @@ PRÜFUNGSRELEVANT: Warum Von-Neumann revolutionär, Unterschied zu Harvard, Beis
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# HTML Metadaten
|
||||
|
||||
```html
|
||||
<html>
|
||||
<head>
|
||||
<title>Im Browsertab als Überschrift sichtbar</title>
|
||||
|
||||
<meta name="description" content="" />
|
||||
|
||||
<meta name="og:image" content="https://...." />
|
||||
</head>
|
||||
|
||||
...
|
||||
|
||||
</html>
|
||||
```
|
||||
|
||||
- <small>*Webseiten werden nicht nur von Menschen besucht, sondern auch von Suchmaschinen, Programmen, Bots etc.*</small>
|
||||
- <small>*Metadaten helfen bspw. auch Screen-Readern beim "Verstehen" der Inhalte*</small>
|
||||
|
||||
<!--
|
||||
HEAD-BEREICH: Metadaten, nicht sichtbar im Browser-Fenster
|
||||
WICHTIGE META-TAGS:
|
||||
- <title>: Browser-Tab, Lesezeichen, Suchergebnis-Titel
|
||||
- <meta name="description">: Suchergebnis-Snippet (max. 160 Zeichen)
|
||||
- <meta name="viewport">: Mobile Darstellung (width=device-width)
|
||||
- <meta charset="UTF-8">: Zeichenkodierung (Umlaute!)
|
||||
OPEN GRAPH (og:*): Social Media Vorschau (Facebook, LinkedIn, WhatsApp)
|
||||
- og:title, og:description, og:image, og:url
|
||||
TWITTER CARDS: twitter:card, twitter:title, twitter:image
|
||||
SEO-RELEVANZ: Google nutzt title + description für Ranking und Snippet
|
||||
ACCESSIBILITY: <html lang="de"> für Screenreader-Aussprache
|
||||
PRÜFUNGSRELEVANT: Was gehört in <head>, Unterschied zu <body>, wichtigste Meta-Tags
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Wie nutzen Menschen das Web?
|
||||
|
||||
| Eingabe | Nutzungsweise |
|
||||
|---------|---------------|
|
||||
| **Maus** | Klicken, Scrollen |
|
||||
| **Tastatur** | Tab-Navigation, Enter, Pfeiltasten |
|
||||
| **Screenreader** | Vorlesen von Inhalten (NVDA, VoiceOver, JAWS) |
|
||||
| **Sprachsteuerung** | "Klicke auf Anmelden" |
|
||||
| **Augensteuerung** | Eye-Tracking |
|
||||
| **Switch-Geräte** | Ein-/Aus-Schalter |
|
||||
|
||||
→ **Nicht alle nutzen Maus + Bildschirm!**
|
||||
|
||||
<!--
|
||||
ACCESSIBILITY (a11y): a + 11 Buchstaben + y
|
||||
STATISTIK: ~15% der Weltbevölkerung haben eine Behinderung (WHO)
|
||||
ARTEN VON EINSCHRÄNKUNGEN:
|
||||
- Permanent: Blindheit, Taubheit, motorische Einschränkungen
|
||||
- Temporär: Gebrochener Arm, Augen-OP, Ohrenentzündung
|
||||
- Situativ: Helle Sonne (Kontrast), laute Umgebung (kein Audio), Baby auf Arm (eine Hand)
|
||||
ASSISTIVE TECHNOLOGIEN:
|
||||
- Screenreader: NVDA (Windows, kostenlos), VoiceOver (Apple), JAWS (kommerziell)
|
||||
- Braillezeilen: Taktile Ausgabe für Blinde
|
||||
- Switch-Geräte: Für motorische Einschränkungen
|
||||
- Spracheingabe: Dragon NaturallySpeaking, Siri, Google Assistant
|
||||
WCAG: Web Content Accessibility Guidelines (A, AA, AAA)
|
||||
EUROPEAN ACCESSIBILITY ACT: Seit Juni 2025 verpflichtend!
|
||||
PRÜFUNGSRELEVANT: Arten von Einschränkungen, Screenreader-Beispiele, WCAG
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Warum "Barrierefreiheit"?
|
||||
|
||||
**Rechtlich:**
|
||||
- EU: European Accessibility Act (seit Juni 2025 in Kraft!)
|
||||
- DE: BITV 2.0 (Behörden), Privatwirtschaft betroffen
|
||||
|
||||
**Ethisch:**
|
||||
- Teilhabe für alle Menschen
|
||||
- Digitale Inklusion
|
||||
|
||||
**Praktisch:**
|
||||
- Bessere UX für **alle** (SEO, Mobile, ältere Menschen)
|
||||
- Größerer Markt (~15% der Bevölkerung)
|
||||
|
||||
<!--
|
||||
RECHTLICHER RAHMEN:
|
||||
- European Accessibility Act (EAA): EU-Richtlinie, seit 28. Juni 2025 in Kraft
|
||||
- Betrifft: E-Commerce, Banking, Telekommunikation, Transport, E-Books
|
||||
- BITV 2.0: Barrierefreie Informationstechnik-Verordnung (DE, öffentliche Stellen)
|
||||
- BFSG: Barrierefreiheitsstärkungsgesetz (DE-Umsetzung des EAA)
|
||||
- Strafen: Bis zu 100.000€ Bußgeld möglich
|
||||
CURB-CUT-EFFEKT:
|
||||
- Bordsteinabsenkung für Rollstuhlfahrer → hilft auch Kinderwagen, Rollkoffern, Fahrrädern
|
||||
- Untertitel für Gehörlose → helfen in lauter Umgebung, beim Sprachlernen
|
||||
- Kontrastreiche Farben → besser bei Sonnenlicht, für ältere Menschen
|
||||
BUSINESS CASE:
|
||||
- 15% Zielgruppe (Menschen mit Behinderung)
|
||||
- +20% ältere Menschen (Sehschwäche, motorische Einschränkungen)
|
||||
- SEO-Vorteile: Alt-Texte, semantisches HTML = besser für Google
|
||||
PRÜFUNGSRELEVANT: EAA kennen, Curb-Cut-Effekt erklären können, Business Case
|
||||
-->
|
||||
# HTML-Anatomie (2/2)
|
||||
|
||||
- Wir unterscheiden zwischen **umschließende** und **selbst-schließende** HTML-Tags
|
||||
- **Umschließend**
|
||||
- `<b> ... </b>` fett-gedruckter Text (inline)
|
||||
- `<a> ... </a>` Hyperlink (Verlinkung zu anderen Webseiten, Bildern)
|
||||
- `<body> ... </body>` Sichtbarer Teil eines HTML-Dokuments
|
||||
- `<details> ... </details>` Aufklapp-Text (Akkordion)
|
||||
- **Selbst-schließend**
|
||||
- `<img />` Bild, Vektorgrafik etc.
|
||||
- `<input />` Eingabefeld
|
||||
- `<meta />` Metadaten
|
||||
|
||||
---
|
||||
|
||||
@@ -294,17 +161,16 @@ PRÜFUNGSRELEVANT: EAA kennen, Curb-Cut-Effekt erklären können, Business Case
|
||||
# Barrieren im Netz vermeiden (a11y)
|
||||
|
||||
**Tastatur-Test:**
|
||||
- Alle Funktionen nur mit Tab + Enter nutzbar?
|
||||
- Fokus immer sichtbar?
|
||||
- Logische Tab-Reihenfolge?
|
||||
- Alle Funktionen sind nur mit Tab + Enter nutzbar
|
||||
- Fokus immer sichtbar: Textlinks, Buttons, Texteingabe etc.
|
||||
- Logische Tab-Reihenfolge: "Skip to main", Navigation, Hauptinhalt
|
||||
|
||||
**Screenreader-Test:**
|
||||
- VoiceOver (Mac): `Cmd + F5`
|
||||
- NVDA (Windows): Gratis-Download
|
||||
|
||||
**Tools:**
|
||||
- axe DevTools, WAVE (Browser-Extensions)
|
||||
- Lighthouse (in Chrome DevTools)
|
||||
**Tools/Browser-Extensions:**
|
||||
- [WAVE](https://wave.webaim.org/), [axe DevTools](https://www.deque.com/axe/devtools/), [Web Disability Simulator](https://chromewebstore.google.com/detail/web-disability-simulator/olioanlbgbpmdlgjnnampnnlohigkjla)
|
||||
|
||||
<!--
|
||||
Automatische Tests finden ~30% der Probleme
|
||||
@@ -319,168 +185,19 @@ Echte NutzerInnen einbeziehen = Gold-Standard
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Das TCP/IP-Modell
|
||||
|
||||
| Schicht | Name | Aufgabe | Protokolle |
|
||||
|---------|------|---------|------------|
|
||||
| **4** | Anwendung | Was? Welcher Dienst? | HTTP, DNS, SMTP |
|
||||
| **3** | Transport | Zuverlässigkeit, Ports | TCP, UDP |
|
||||
| **2** | Internet | Routing, globale Adressen | IP |
|
||||
| **1** | Netzzugang | Lokale Übertragung | Ethernet, WLAN |
|
||||
|
||||
**4 Schichten. Das reicht, um das Internet zu verstehen.**
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- TCP/IP = das echte Internet
|
||||
- 4 Schichten:
|
||||
- Anwendung: Was will ich? (HTTP, DNS, Mail)
|
||||
- Transport: Kommt an? Welches Programm? (TCP, UDP)
|
||||
- Internet: Wie zum Zielrechner? (IP)
|
||||
- Netzzugang: Wie zum nächsten Gerät? (Ethernet, WLAN)
|
||||
- KLAUSUR: Welches Protokoll → welche Schicht
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Dateneinheiten pro Schicht
|
||||
|
||||
| Schicht | Name | Dateneinheit | Was kommt hinzu? |
|
||||
|---------|------|--------------|------------------|
|
||||
| Anwendung | HTTP, DNS | **Daten** | – |
|
||||
| Transport | TCP, UDP | **Segment** | Ports, Sequenznummern |
|
||||
| Internet | IP | **Paket** | IP-Adressen |
|
||||
| Netzzugang | Ethernet | **Frame** | MAC-Adressen, Prüfsumme |
|
||||
|
||||
Merkhilfe: **D**aten → **S**egment → **P**aket → **F**rame
|
||||
(„**D**er **S**ache **P**raktischer **F**olgen")
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- Glossar-Begriffe jetzt eingeordnet:
|
||||
- Anwendung: Daten/Message
|
||||
- Transport: Segment
|
||||
- Internet: Paket
|
||||
- Netzzugang: Frame
|
||||
- Merkhilfe: D-S-P-F (eigene erfinden!)
|
||||
- KLAUSUR: Begriff → Schicht
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# IP vs. MAC vs. Port
|
||||
|
||||
| | IP-Adresse | MAC-Adresse | Port |
|
||||
|---|-----------|-------------|------|
|
||||
| **Frage** | Welcher Rechner? | Welches Gerät nebenan? | Welches Programm? |
|
||||
| **Reichweite** | Global | Lokal (1 Hop) | Auf einem Rechner |
|
||||
| **Ändert sich?** | Nein | Ja, bei jedem Hop | Nein |
|
||||
| **Schicht** | Internet (IP) | Netzzugang (Ethernet) | Transport (TCP/UDP) |
|
||||
| **Beispiel** | 212.132.79.37 | aa:bb:cc:dd:ee | 443 |
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- KLAUSUR: Diese Tabelle
|
||||
- IP: Welcher Rechner? Global. Bleibt gleich.
|
||||
- MAC: Welcher Nachbar? Lokal. Ändert sich.
|
||||
- Port: Welches Programm? Bleibt gleich.
|
||||
- Merken: NUR MAC ändert sich unterwegs
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Der 3-Way-Handshake
|
||||
|
||||
```
|
||||
Client (dein Laptop) Server
|
||||
| |
|
||||
|-------- SYN (Seq=1000) --------------->|
|
||||
| "Ich will reden" |
|
||||
| |
|
||||
|<--- SYN-ACK (Seq=5000, Ack=1001) ------|
|
||||
| "OK, ich auch. Ich starte bei 5000"|
|
||||
| |
|
||||
|-------- ACK (Ack=5001) --------------->|
|
||||
| "Verstanden, los geht's" |
|
||||
| |
|
||||
| [ Verbindung steht ] |
|
||||
```
|
||||
|
||||
**SYN** = Synchronize · **ACK** = Acknowledge
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- 3 Pakete → Verbindung steht
|
||||
- 1. Client SYN: "Will Verbindung, starte bei 1000"
|
||||
- 2. Server SYN-ACK: "OK, ich starte bei 5000, erwarte 1001"
|
||||
- 3. Client ACK: "Verstanden, erwarte 5001"
|
||||
- Seq-Nr wichtig: Beide wissen nächstes erwartetes Byte
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# TCP vs. UDP
|
||||
|
||||
| | TCP | UDP |
|
||||
|---|-----|-----|
|
||||
| **Verbindung** | Ja (Handshake) | Nein |
|
||||
| **Reihenfolge** | Garantiert | Nicht garantiert |
|
||||
| **Verlorene Pakete** | Werden nachgefordert | Gehen verloren |
|
||||
| **Overhead** | Höher | Niedriger |
|
||||
| **Use Cases** | Web, Email, Downloads | Video-Calls, Gaming, DNS |
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
- Zwei Transport-Protokolle
|
||||
- TCP: zuverlässig
|
||||
- Handshake, Seq-Nr, Bestätigungen, Neuübertragung
|
||||
- Perfekt für Web, Downloads (nichts darf fehlen)
|
||||
- UDP: schneller
|
||||
- Kein Handshake, keine Bestätigungen
|
||||
- Verloren = weg
|
||||
- Perfekt für Video-Calls (Verzögerung schlimmer als Verlust)
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# HTTP-Methoden
|
||||
|
||||
| Methode | Bedeutung | Beispiel |
|
||||
|---------|-----------|----------|
|
||||
| **GET** | Daten abrufen | Seite laden |
|
||||
| **POST** | Daten senden | Formular absenden |
|
||||
| **PUT** | Daten ersetzen | Profil aktualisieren |
|
||||
| **DELETE** | Daten löschen | Account löschen |
|
||||
HTTP-Methoden beschreiben, **was** der Client mit einer Ressource tun will.
|
||||
|
||||
| Methode | Bedeutung | Beispiel |
|
||||
|---------|-----------|-----------------------------------------------|
|
||||
| **GET** | Daten abrufen | Seite laden `GET /index.html HTTP/2.0` |
|
||||
| **POST** | Daten senden | Formular absenden `POST /login HTTP/2.0` |
|
||||
| **PUT** | Daten ersetzen | Profil aktualisieren `PUT /users/42 HTTP/2.0` |
|
||||
| **DELETE** | Daten löschen | Account löschen `DELETE /users/42 HTTP/2.0` |
|
||||
|
||||
<small>CRUD = Create, Read, Update, Delete</small>
|
||||
|
||||
```http
|
||||
GET /index.html HTTP/1.1
|
||||
POST /login HTTP/1.1
|
||||
```
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
@@ -505,10 +222,12 @@ Das wird wichtiger, wenn ihr mit REST-APIs arbeitet.
|
||||
|
||||
# HTTP Status-Codes
|
||||
|
||||
Jede HTTP-Response enthält einen dreistelligen Status-Code — die erste Ziffer verrät die Kategorie.
|
||||
|
||||
```http
|
||||
HTTP/1.1 200 OK
|
||||
HTTP/1.1 404 Not Found
|
||||
HTTP/1.1 500 Internal Server Error
|
||||
HTTP/2.0 200 OK
|
||||
HTTP/2.0 404 Not Found
|
||||
HTTP/2.0 500 Internal Server Error
|
||||
```
|
||||
|
||||
| Code-Bereich | Bedeutung |
|
||||
@@ -539,112 +258,76 @@ Status-Codes sagen euch, was passiert ist.
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Zusammenfassung Teil 1
|
||||
# Selektoren: ID
|
||||
|
||||
**Der Ablauf:**
|
||||
1. DNS (UDP:53) → Name zu IP
|
||||
2. TCP-Handshake (SYN → SYN-ACK → ACK)
|
||||
3. HTTP-Request (GET /...)
|
||||
4. HTTP-Response (200 OK + HTML)
|
||||

|
||||
|
||||
**Die Konzepte:**
|
||||
- 4 Schichten: Anwendung → Transport → Internet → Netzzugang
|
||||
- IP bleibt gleich, MAC ändert sich pro Hop
|
||||
- Ports identifizieren Programme
|
||||
- Encapsulation: Jede Schicht verpackt die darüberliegende
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
|
||||
Das ist die Zusammenfassung für Teil 1. Das solltet ihr können:
|
||||
|
||||
Den Ablauf: DNS, TCP-Handshake, HTTP-Request, HTTP-Response.
|
||||
|
||||
Die Schichten und ihre Protokolle.
|
||||
|
||||
Den Unterschied zwischen IP und MAC – was bleibt gleich, was ändert sich.
|
||||
|
||||
Was Ports tun.
|
||||
|
||||
Wie Encapsulation funktioniert.
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Spezifität: Welche Regel gewinnt?
|
||||
|
||||
| Selektor | Spezifität |
|
||||
|----------|------------|
|
||||
| Element (`p`) | 0,0,0,1 |
|
||||
| Klasse (`.wichtig`) | 0,0,1,0 |
|
||||
| ID (`#header`) | 0,1,0,0 |
|
||||
| Inline (`style="..."`) | 1,0,0,0 |
|
||||
|
||||
```css
|
||||
p { color: blue; } /* 0,0,0,1 */
|
||||
.text { color: green; } /* 0,0,1,0 → gewinnt */
|
||||
#intro { color: red; } /* 0,1,0,0 → gewinnt über beide */
|
||||
```html
|
||||
<nav id="hauptnavigation">...</nav>
|
||||
```
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
|
||||
Wenn mehrere Regeln auf ein Element zutreffen, gewinnt die spezifischere.
|
||||
|
||||
Spezifität wird in vier Zahlen gemessen. Von links nach rechts: Inline, IDs, Klassen, Elemente.
|
||||
|
||||
Ein Element-Selektor hat 0,0,0,1. Eine Klasse hat 0,0,1,0. Eine ID hat 0,1,0,0.
|
||||
|
||||
0,0,1,0 schlägt 0,0,0,99 – auch hundert Element-Selektoren schlagen keine Klasse.
|
||||
|
||||
Inline-Styles schlagen alles – außer !important, was ihr vermeiden solltet.
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Responsive Design
|
||||
|
||||
```css
|
||||
/* Mobile First: Basis-Styles */
|
||||
.container {
|
||||
#hauptnavigation {
|
||||
background: #333;
|
||||
padding: 1rem;
|
||||
background: white;
|
||||
}
|
||||
|
||||
/* Ab 768px (Tablet): Anpassungen */
|
||||
@media (min-width: 768px) {
|
||||
.container {
|
||||
padding: 2rem;
|
||||
background: red;
|
||||
}
|
||||
}
|
||||
|
||||
/* Ab 1024px (Desktop): Weitere Anpassungen */
|
||||
@media (min-width: 1024px) {
|
||||
.container {
|
||||
background: green;
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
**Raute** vor dem Namen = ID
|
||||
|
||||
**Achtung:** IDs sollten **einmalig** pro Seite sein.
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
|
||||
Responsive Design: Die Seite passt sich der Bildschirmgröße an.
|
||||
ID-Selektoren sind noch spezifischer. Raute vor dem Namen.
|
||||
|
||||
Mobile First: Ihr schreibt zuerst die Styles für kleine Screens. Dann fügt ihr mit @media-Queries Anpassungen für größere Screens hinzu.
|
||||
IDs sollten auf einer Seite nur einmal vorkommen. Für Navigation, Header, Footer, Main – einmalige Elemente.
|
||||
|
||||
min-width heißt: "ab dieser Breite". Also: Basis gilt für alle. Ab 768px gelten zusätzliche Regeln. Ab 1024px noch mehr.
|
||||
|
||||
Das Gegenteil wäre Desktop First mit max-width – aber Mobile First ist heute Standard.
|
||||
In der Praxis: Klassen sind meist besser. IDs haben hohe Spezifität und sind unflexibel.
|
||||
-->
|
||||
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: "" -->
|
||||
<!-- _footer: "" -->
|
||||
|
||||
|
||||
# Farben
|
||||
|
||||

|
||||
|
||||
CSS kennt fünf Farb-Notationen: **Keyword**, **Hex**, **RGB**, **RGBA** und **HSL**.
|
||||
|
||||
```css
|
||||
/* Keyword */
|
||||
color: red;
|
||||
color: rebeccapurple;
|
||||
/* Hex */
|
||||
color: #FF0000;
|
||||
color: #F00;
|
||||
/* RGB = Red Green Blue, RGBA mit Alpha */
|
||||
color: rgb(255, 0, 0);
|
||||
color: rgba(255, 0, 0, 0.5);
|
||||
/* HSL = Hue, Saturation, Lightness */
|
||||
color: hsl(0, 100%, 50%);
|
||||
```
|
||||
|
||||
MDN-Referenz: [CSS `<color>`](https://developer.mozilla.org/de/docs/Web/CSS/Reference/Values/color_value)
|
||||
|
||||
<!--
|
||||
SPEAKER NOTES:
|
||||
|
||||
Farben können auf verschiedene Arten angegeben werden.
|
||||
|
||||
Keywords: red, blue, rebeccapurple. Begrenzte Auswahl, aber lesbar.
|
||||
|
||||
Hex: Sechs Zeichen, je zwei für Rot, Grün, Blau. #FF0000 ist reines Rot.
|
||||
|
||||
RGB: Gleiche Idee, aber dezimal. rgb(255, 0, 0).
|
||||
|
||||
RGBA: Mit Alpha-Kanal für Transparenz. 0 ist unsichtbar, 1 ist voll sichtbar.
|
||||
|
||||
HSL: Hue, Saturation, Lightness. Manchmal intuitiver für Farbanpassungen.
|
||||
-->
|
||||
|
||||
@@ -0,0 +1,666 @@
|
||||
---
|
||||
marp: true
|
||||
theme: gaia
|
||||
paginate: true
|
||||
backgroundColor: #fff
|
||||
header: "Web Engineering – DHBW Stuttgart"
|
||||
footer: "Michael Czechowski – SoSe 2026"
|
||||
title: Intro
|
||||
---
|
||||
|
||||
<style>
|
||||
:root {
|
||||
--color-foreground: #1a1a2e;
|
||||
--color-highlight: #d63384;
|
||||
--color-dimmed: #4a4a6a;
|
||||
}
|
||||
section.invert {
|
||||
--color-foreground: #fff;
|
||||
}
|
||||
section {
|
||||
font-size: 1.4rem;
|
||||
}
|
||||
h1 {
|
||||
color: #a02060;
|
||||
}
|
||||
section.invert h1 {
|
||||
color: #fff;
|
||||
}
|
||||
h2 {
|
||||
color: #1f2937;
|
||||
}
|
||||
section.invert h2 {
|
||||
color: #f48fb1;
|
||||
}
|
||||
pre {
|
||||
background: #0f0f23;
|
||||
color: #f48fb1;
|
||||
border-radius: 8px;
|
||||
border-left: 3px solid #d63384;
|
||||
}
|
||||
pre code {
|
||||
background: transparent;
|
||||
color: inherit;
|
||||
}
|
||||
code {
|
||||
background: #1a1a2e;
|
||||
color: #f48fb1;
|
||||
padding: 0.15em 0.4em;
|
||||
border-radius: 4px;
|
||||
}
|
||||
a {
|
||||
color: var(--color-highlight);
|
||||
}
|
||||
</style>
|
||||
|
||||
<!-- _class: invert -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _backgroundColor: #000 -->
|
||||
|
||||

|
||||
|
||||
# Web Engineering
|
||||
|
||||
**DHBW Stuttgart** · Informatik / Wirtschaftsinformatik
|
||||
|
||||
**Sommersemester 2026**
|
||||
|
||||
[https://librete.ch/dhbw/](https://librete.ch/dhbw/)
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
# Ressourcen zum Selbstlernen
|
||||
|
||||
- **CODE CRISPIES** — [codecrispi.es](https://codecrispi.es/)
|
||||
- **Online Code-Editor** — [codepen.io](https://codepen.io/pen/)
|
||||
- **MDN** (Mozilla Developer Network) — [developer.mozilla.org/de/](https://developer.mozilla.org/de/)
|
||||
- **Flexbox-Spiel** — [flexboxfroggy.com](https://flexboxfroggy.com/)
|
||||
- **Grid-Spiel** — [cssgridgarden.com](https://cssgridgarden.com/)
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: lead -->
|
||||
|
||||
# Herzlich Willkommen!
|
||||
|
||||
## 1. Sitzung: 08.05.2026
|
||||
|
||||
---
|
||||
|
||||
# Über mich
|
||||
|
||||

|
||||
|
||||
**Michael Werner Czechowski**
|
||||
|
||||
- Systems and Platform Engineer
|
||||
- Schwerpunkte:
|
||||
- Web-Technologien, Barriere-Armut, Open Source
|
||||
- Hintergrund:
|
||||
- Philosophie (Uni Stuttgart)
|
||||
- Wirtschaftsinformatik (Leibniz-FH Hannover)
|
||||
- Honorardozent (DHBW Stuttgart, HdM Stuttgart, Leibniz-FH)
|
||||
- Kontakt: michael.czechowski@lehre.dhbw-stuttgart.de
|
||||
|
||||
---
|
||||
|
||||
# Vorstellungsrunde
|
||||
|
||||
## Wer bist du, was machst du?
|
||||
|
||||
> Ich bin \_\_\_, mache bei \_\_\_ \_\_\_ und ein Fun Fact über mich ist, dass ich ...
|
||||
|
||||
- ... sämtliche One Piece Bände gelesen habe.
|
||||
- ... alle XKCD Comics mit Titel kenne.
|
||||
- ... irgendwann bei \_\_\_ arbeiten möchte.
|
||||
- ... Paulaner Spezi im Blindtest herausschmecken kann.
|
||||
|
||||
---
|
||||
|
||||
# Vorlesungsplan
|
||||
|
||||
<style scoped>
|
||||
.lp-grid {
|
||||
display: grid;
|
||||
grid-template-columns: repeat(4, 1fr);
|
||||
gap: 10px;
|
||||
margin-top: 0.5rem;
|
||||
}
|
||||
.lp-card {
|
||||
border: 1px solid #d63384;
|
||||
border-radius: 8px;
|
||||
padding: 10px 12px;
|
||||
background: #fff;
|
||||
font-size: 0.95em;
|
||||
display: flex;
|
||||
flex-direction: column;
|
||||
gap: 4px;
|
||||
}
|
||||
.lp-card .head {
|
||||
font-weight: bold;
|
||||
color: #a02060;
|
||||
display: flex;
|
||||
justify-content: space-between;
|
||||
align-items: baseline;
|
||||
font-size: 0.85em;
|
||||
}
|
||||
.lp-card .head .num {
|
||||
font-size: 1.1em;
|
||||
}
|
||||
.lp-card .topic {
|
||||
color: #1a1a2e;
|
||||
line-height: 1.25;
|
||||
}
|
||||
.lp-card.milestone {
|
||||
background: #fce4ec;
|
||||
border-color: #a02060;
|
||||
border-width: 2px;
|
||||
}
|
||||
.lp-card.milestone .topic {
|
||||
font-weight: bold;
|
||||
}
|
||||
</style>
|
||||
|
||||
<div class="lp-grid">
|
||||
<div class="lp-card"><div class="head"><span class="num">1</span><span>08.05.</span></div><div class="topic">Intro · Projektgruppen · Internet 101</div></div>
|
||||
<div class="lp-card"><div class="head"><span class="num">2</span><span>15.05.</span></div><div class="topic">HTML und CSS (Frameworks)</div></div>
|
||||
<div class="lp-card"><div class="head"><span class="num">3</span><span>22.05.</span></div><div class="topic">JS (Frameworks) und npm</div></div>
|
||||
<div class="lp-card"><div class="head"><span class="num">4</span><span>29.05.</span></div><div class="topic">nodeJS: Scripting, Running, Building</div></div>
|
||||
<div class="lp-card"><div class="head"><span class="num">5</span><span>05.06.</span></div><div class="topic">Express API, CRUD, Middlewares</div></div>
|
||||
<div class="lp-card milestone"><div class="head"><span class="num">6</span><span>12.06.</span></div><div class="topic">Projektwerkstattbericht</div></div>
|
||||
<div class="lp-card"><div class="head"><span class="num">7</span><span>19.06.</span></div><div class="topic">Testing (Unit · Integration · E2E)</div></div>
|
||||
<div class="lp-card"><div class="head"><span class="num">8</span><span>26.06.</span></div><div class="topic">TypeScript</div></div>
|
||||
<div class="lp-card"><div class="head"><span class="num">9</span><span>03.07.</span></div><div class="topic">Docker · Proxies · DBs</div></div>
|
||||
<div class="lp-card"><div class="head"><span class="num">10</span><span>10.07.</span></div><div class="topic">Wrap-up & Projektsupport</div></div>
|
||||
<div class="lp-card milestone"><div class="head"><span class="num">11</span><span>17.07.</span></div><div class="topic">Präsentation</div></div>
|
||||
</div>
|
||||
|
||||
---
|
||||
|
||||
# Erwartungen und Wünsche
|
||||
|
||||
- Was haben wir bisher gelernt?
|
||||
- Was kennen wir bereits aus dem Arbeitskontext?
|
||||
- Welche Technologien nutzen wir bereits?
|
||||
- Was möchte ich hier lernen: Frontend, Backend, DevOps?
|
||||
- Eigene FOSS entwickeln?
|
||||
- CLI-Skills verbessern?
|
||||
- Cloud, Cloud, Cloud?
|
||||
|
||||
---
|
||||
|
||||
# Prüfungsleistung – Übersicht
|
||||
|
||||
Eigenes Projekt: **Web-Applikation** XOR **Backend** (API/CLI).
|
||||
|
||||
| Punkte | Bereich |
|
||||
|--------|---------|
|
||||
| 30 | Grundanforderungen (Projektgrundlagen + Präsentation) |
|
||||
| 25 | Clean Code Prinzipien |
|
||||
| 25 | Accessibility & UX |
|
||||
| 20 | Technische Umsetzung |
|
||||
| **100** | **Basispunkte** |
|
||||
| +15 | Bonuspunkte (max. 3 Features a 5 P.) |
|
||||
|
||||
---
|
||||
|
||||
# Prüfungsleistung – Grundanforderungen (30 P.)
|
||||
|
||||
**Projektgrundlagen (15 P.)**
|
||||
- Funktionsfähige Anwendung (8 P.)
|
||||
- Repository mit Versionskontrolle (4 P.)
|
||||
- Projektdokumentation / README (3 P.)
|
||||
|
||||
**Präsentation (15 P.)**
|
||||
- Elevator Pitch (5 P.)
|
||||
- Technische Präsentation (5 P.)
|
||||
- Projektevolution: wie hat sich das Projekt vs. Ursprungsidee verändert? (5 P.)
|
||||
|
||||
---
|
||||
|
||||
# Prüfungsleistung – Clean Code (25 P.)
|
||||
|
||||
**Projektstruktur (10 P.)**
|
||||
- Ordnerstruktur (5 P.)
|
||||
- Datei-Organisation (5 P.)
|
||||
|
||||
**Code-Qualität (10 P.)**
|
||||
- KISS – Keep It Simple, Stupid (3 P.)
|
||||
- Beschreibende Namen (3 P.)
|
||||
- Funktionsverantwortlichkeiten (4 P.)
|
||||
|
||||
**Kommentierung & Dokumentation (5 P.)**
|
||||
|
||||
---
|
||||
|
||||
# Prüfungsleistung – Accessibility & UX (25 P.)
|
||||
|
||||
**Web Accessibility (15 P.)**
|
||||
- Semantisches HTML (5 P.)
|
||||
- ARIA Labels & Alt-Texte (5 P.)
|
||||
- Tastaturnavigation (5 P.)
|
||||
|
||||
**Responsive Design (10 P.)**
|
||||
- Mobile First Approach (5 P.)
|
||||
- Flexbox/Grid Layout (5 P.)
|
||||
|
||||
---
|
||||
|
||||
# Prüfungsleistung – Technische Umsetzung (20 P.)
|
||||
|
||||
- Plattformunabhängigkeit (5 P.)
|
||||
- Package Management (5 P.)
|
||||
- Build Tools & Optimierung (5 P.)
|
||||
- Live-Demo (5 P.)
|
||||
|
||||
---
|
||||
|
||||
# Prüfungsleistung – Bonuspunkte (max. 15 P.)
|
||||
|
||||
Mindestens 2 Bereiche wählen, je 5 Punkte:
|
||||
|
||||
- API Integration
|
||||
- Local Storage / State Management
|
||||
- Progressive Web App Features
|
||||
- Testing
|
||||
- Erweiterte Responsive Features (3+ Breakpoints)
|
||||
- Security Features
|
||||
|
||||
---
|
||||
|
||||
# Prüfungsleistung – Abgabe & Termine
|
||||
|
||||
- **Code-Upload:** bis 27.07.
|
||||
- **Präsentation:** 17.07. (Gruppen, ~10 Min.)
|
||||
|
||||
Details: https://git.librete.ch/DHBW/pruefungsleistung
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: invert -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _backgroundColor: #000 -->
|
||||
|
||||
# Was ist (k)eine Web Applikation?
|
||||
## Exkurs
|
||||
|
||||
---
|
||||
|
||||
# Was ist (k)eine Web Applikation?
|
||||
|
||||
**Keine Web Applikation ist:**
|
||||
* Betriebssystem (GNU/Linux, Windows, macOS, iOS, Android)
|
||||
* Desktop-Applikation
|
||||
* Mobile-Applikation
|
||||
* Embedded System (Microcontroller, IoT)
|
||||
|
||||
**Eine Web Applikation ist:**
|
||||
* plattformunabhängig (läuft im Browser)
|
||||
* nutzt in der Regel HTTP-Requests
|
||||
* keine Installation nötig — serverseitig aktualisiert
|
||||
* gebaut in Web-Technologien (HTML, CSS, JS/TS)
|
||||
* skalierbar durch verteilte Architektur
|
||||
|
||||
---
|
||||
|
||||
# Internet-Timeline
|
||||
|
||||
| Jahr | Meilenstein |
|
||||
|------|-------------|
|
||||
| **1966** | ARPANET-Projekt startet (DARPA) |
|
||||
| **1969** | Erste Verbindung zwischen UCLA und Stanford |
|
||||
| **1974** | TCP/IP-Protokoll entwickelt |
|
||||
| **1989** | Tim Berners-Lee erfindet das WWW (CERN) |
|
||||
| **1993** | Mosaic — erster grafischer Browser |
|
||||
| **1994** | W3C gegründet (HTML, CSS, SVG, WCAG) |
|
||||
| **1995** | ECMAScript / JavaScript wird Standard |
|
||||
| **2008** | V8 JavaScript Engine (Chrome / Node.js) |
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
# Das WWW (1989)
|
||||
|
||||
**Tim Berners-Lee** am **CERN** (Genf)
|
||||
|
||||
**Problem:** Wissenschaftler:innen können Forschungsdokumente nicht verlinken — Inkompatible Systeme, kein gemeinsames Format.
|
||||
|
||||
**Lösung — drei Bausteine:**
|
||||
|
||||
- **HTML** — Auszeichnungssprache für Dokumente
|
||||
- **HTTP** — Protokoll zur Übertragung
|
||||
- **URL** — eindeutige Adressen
|
||||
|
||||
**1991:** erste Webseite geht online · 1993 vom CERN gemeinfrei freigegeben.
|
||||
|
||||
→ WWW ≠ Internet. Das WWW ist eine **Anwendung auf** dem Internet.
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
# Heute: Physische Infrastruktur
|
||||
|
||||
- **5,5 Milliarden** Menschen online
|
||||
- **> 400 Unterseekabel**, ca. **1,3 Mio. km** Glasfaser
|
||||
- Daten reisen mit **Lichtgeschwindigkeit**
|
||||
- Latenz Frankfurt — New York: ~80 ms
|
||||
|
||||
→ Keine "Cloud" ohne Kabel. Das Internet ist **physische** Infrastruktur — und damit angreifbar.
|
||||
|
||||
**Geopolitik:** Five-Eyes-Allianz (USA, UK, CA, AU, NZ) zapft Unterseekabel ab (Programm "Tempora", aufgedeckt 2013 durch Snowden). DE ist Teil der Fourteen Eyes.
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
|
||||
---
|
||||
|
||||
# HTTP – Hypertext Transfer Protocol
|
||||
|
||||
**Request:**
|
||||
```
|
||||
GET /products HTTP/1.1
|
||||
Host: localhost:8080
|
||||
```
|
||||
|
||||
**Response:**
|
||||
```
|
||||
HTTP/1.1 200 OK
|
||||
Content-Type: application/json
|
||||
|
||||
[{"id": 1, "name": "Produkt A"}, ...]
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: invert -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _backgroundColor: #000 -->
|
||||
|
||||
# Onboarding
|
||||
## Tools, Runtimes, Workflows
|
||||
|
||||
---
|
||||
|
||||
# Werkzeuge & Betriebssystem
|
||||
|
||||
**Erforderliche Werkzeuge:**
|
||||
- **Terminal** (zsh / bash / fish / pwsh) — Kommandozeile
|
||||
- **Editor** (siehe folgende Folie)
|
||||
- **JavaScript-Runtime** (Node.js / Bun / Deno)
|
||||
- **Browser mit DevTools** (Chromium / Firefox / Safari)
|
||||
- **Git** — verteiltes Versionskontrollsystem (Stand der Industrie)
|
||||
|
||||
**OS-Empfehlung:**
|
||||
|
||||
| OS | Status |
|
||||
|----|--------|
|
||||
| **macOS** | First-class, viele Tools "just work" |
|
||||
| **Linux** | First-class, beste Server-Parität |
|
||||
| **Windows + WSL2** | Empfohlen — Windows-CLI hat Edge Cases |
|
||||
| **Windows nativ** (PowerShell) | Funktioniert, aber holpriger Pfad |
|
||||
|
||||
---
|
||||
|
||||
# Node.js installieren – macOS
|
||||
|
||||
Empfohlen: **LTS** (aktuell **Node.js 24** — Stand 2026).
|
||||
|
||||
Paketmanager: **[Homebrew](https://brew.sh)**
|
||||
|
||||
```bash
|
||||
# Homebrew installieren (falls nicht vorhanden)
|
||||
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
|
||||
|
||||
# Node.js LTS installieren
|
||||
brew install node@24
|
||||
|
||||
# Version prüfen
|
||||
node --version
|
||||
npm --version
|
||||
```
|
||||
|
||||
Alternative: Installer von [nodejs.org](https://nodejs.org)
|
||||
|
||||
---
|
||||
|
||||
# Node.js installieren – Linux
|
||||
|
||||
Empfohlen: **LTS** (aktuell **Node.js 24**).
|
||||
|
||||
**Debian / Ubuntu** ([NodeSource](https://github.com/nodesource/distributions)):
|
||||
```bash
|
||||
curl -fsSL https://deb.nodesource.com/setup_lts.x | sudo -E bash -
|
||||
sudo apt install -y nodejs
|
||||
```
|
||||
|
||||
**Arch / Manjaro:**
|
||||
```bash
|
||||
sudo pacman -S nodejs npm
|
||||
```
|
||||
|
||||
**Fedora / RHEL:**
|
||||
```bash
|
||||
sudo dnf module install nodejs:24/common
|
||||
```
|
||||
|
||||
→ Distro-Pakete sind oft **veraltet**. Versionsmanager (folgende Folie) bevorzugen.
|
||||
|
||||
---
|
||||
|
||||
# Node.js installieren – Windows
|
||||
|
||||
Empfohlen: **LTS** (aktuell **Node.js 24**).
|
||||
|
||||
**Option 1: winget** (empfohlen, Win 10/11):
|
||||
```powershell
|
||||
winget install OpenJS.NodeJS.LTS
|
||||
```
|
||||
|
||||
**Option 2: Chocolatey** ([chocolatey.org](https://chocolatey.org)):
|
||||
```powershell
|
||||
choco install nodejs-lts
|
||||
```
|
||||
|
||||
**Option 3: Scoop** ([scoop.sh](https://scoop.sh)):
|
||||
```powershell
|
||||
scoop install nodejs-lts
|
||||
```
|
||||
|
||||
**Option 4:** Installer von [nodejs.org](https://nodejs.org)
|
||||
|
||||
→ **Empfehlung:** WSL2 + Linux-Workflow nutzen.
|
||||
|
||||
---
|
||||
|
||||
# Direkt-Install: Wenn es eng wird
|
||||
|
||||
**Typisches Szenario** — drei parallele Projekte mit unterschiedlichen Anforderungen:
|
||||
|
||||
| Projekt | Stack | Node-Version |
|
||||
|---------|-------|--------------|
|
||||
| Praktikums-API | Express (Legacy) | 18.x (LTS Hydrogen) |
|
||||
| Studienarbeit | Next.js 15 | 22.x (LTS Jod) |
|
||||
| Aktuelles Lab-Projekt | neueste Features | 24.x (Iron, current LTS) |
|
||||
|
||||
System-Install kennt nur **eine** Node-Version global → Konflikt.
|
||||
|
||||
---
|
||||
|
||||
# Symptome im Alltag
|
||||
|
||||
- `npm install` bricht mit `engines`-Warning ab
|
||||
- native Module (z. B. `node-sass`) bauen nicht
|
||||
- CI-Pipeline ist grün, lokal rot — oder umgekehrt
|
||||
- erheblicher Zeitverlust beim Debuggen von Versions-Konflikten
|
||||
|
||||
→ Lösung: **Versionsmanager** und Node-Version pro Projekt pinnen.
|
||||
|
||||
---
|
||||
|
||||
# Node-Versionsmanager
|
||||
|
||||
Verschiedene Projekte brauchen oft verschiedene Node-Versionen. **Lösung:** Versionsmanager.
|
||||
|
||||
| Tool | Sprache | Geschwindigkeit | Plattform |
|
||||
|------|---------|-----------------|-----------|
|
||||
| **nvm** | Bash | langsam (Shell-Funktion) | macOS, Linux |
|
||||
| **fnm** | Rust | sehr schnell | macOS, Linux, Windows |
|
||||
| **asdf** | Bash | mittel, multi-language | macOS, Linux |
|
||||
| **volta** | Rust | schnell, pinning per `package.json` | alle |
|
||||
|
||||
```bash
|
||||
# fnm
|
||||
curl -fsSL https://fnm.vercel.app/install | bash
|
||||
fnm install --lts # aktuell Node 24
|
||||
fnm use lts-latest
|
||||
|
||||
# .nvmrc / .node-version automatisch
|
||||
echo "lts/*" > .nvmrc
|
||||
fnm use # liest .nvmrc
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# Alternative Runtimes
|
||||
|
||||
| Runtime | Erschienen | Engine | USP |
|
||||
|---------|------------|--------|-----|
|
||||
| **Node.js** | 2009 | V8 (C++) | Standard, größtes Ökosystem |
|
||||
| **Deno** | 2020 | V8 (Rust) | Sicherheit, TypeScript nativ, Std-Lib |
|
||||
| **Bun** | 2022 | JavaScriptCore (Zig) | Geschwindigkeit, all-in-one |
|
||||
|
||||
```bash
|
||||
# Deno
|
||||
curl -fsSL https://deno.land/install.sh | sh
|
||||
deno run main.ts
|
||||
|
||||
# Bun
|
||||
curl -fsSL https://bun.sh/install | bash
|
||||
bun install
|
||||
bun run dev
|
||||
```
|
||||
|
||||
→ Im Kurs primär **Node.js**. Bun und Deno sind ebenfalls zulässig.
|
||||
|
||||
---
|
||||
|
||||
# Editor (IDE)
|
||||
|
||||
- **VS Code** (empfohlen) — kostenlos, große Plugin-Auswahl
|
||||
- **JetBrains WebStorm** — sehr mächtig, kostenpflichtig
|
||||
- kostenlos für Studierende via [JetBrains Education](https://www.jetbrains.com/community/education/#students)
|
||||
- **Vim / Neovim / Emacs** — für CLI-Profis
|
||||
- **Zed** — modern, schnell
|
||||
|
||||
---
|
||||
|
||||
# Browser DevTools
|
||||
|
||||
Chromium / Firefox / Safari — `F12` oder `Cmd+Opt+I`
|
||||
|
||||
<small>Chromium = Open-Source-Basis von Chrome, Edge, Brave, Opera, Vivaldi etc.</small>
|
||||
|
||||
**Wichtigste Panels:**
|
||||
- **Network** — HTTP-Requests, Responses, Timing
|
||||
- **Console** — `console.log`, JS-Errors, REPL
|
||||
- **Elements** — DOM-Inspektor, Live-CSS-Editor
|
||||
- **Sources** — Debugger, Breakpoints, Source-Maps
|
||||
- **Performance** — Profiling, Frame-Rate, FPS
|
||||
- **Application** — LocalStorage, Cookies, Service Workers
|
||||
|
||||
---
|
||||
|
||||
# HTTP-Clients
|
||||
|
||||
- **Bruno** ([usebruno.com](https://usebruno.com)) — open source, git-friendly
|
||||
- **Hoppscotch** ([hoppscotch.io](https://hoppscotch.io)) — open source, browser-basiert (vormals Postwoman)
|
||||
- **Insomnia** / **Postman** — etabliert, freemium
|
||||
- **curl** / **httpie** — CLI (Command-Line Interface, scriptbar)
|
||||
|
||||
---
|
||||
|
||||
# Git Setup & Workflow
|
||||
|
||||
**Einmalige Konfiguration:**
|
||||
```bash
|
||||
git config --global user.name "Vorname Nachname"
|
||||
git config --global user.email "vorname.nachname@example.com"
|
||||
git config --global init.defaultBranch main
|
||||
git config --global pull.rebase true
|
||||
```
|
||||
|
||||
**SSH-Key für GitHub/GitLab:**
|
||||
```bash
|
||||
ssh-keygen -t ed25519 -C "vorname.nachname@example.com"
|
||||
cat ~/.ssh/id_ed25519.pub # → in GitHub-Settings einfügen
|
||||
```
|
||||
|
||||
**Tägliche Befehle:**
|
||||
```bash
|
||||
git status # was hat sich geändert?
|
||||
git add <file> # für Commit vormerken
|
||||
git commit -m "feat: ..." # Conventional Commits
|
||||
git push # hochladen
|
||||
git pull --rebase # neueste Änderungen holen
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# Projekt-Skeleton
|
||||
|
||||
```bash
|
||||
mkdir mein-projekt && cd mein-projekt
|
||||
git init
|
||||
npm init -y # erzeugt package.json
|
||||
echo "node_modules" > .gitignore
|
||||
echo ".env" >> .gitignore
|
||||
npm install express
|
||||
```
|
||||
|
||||
**`package.json` minimal:**
|
||||
```json
|
||||
{
|
||||
"name": "mein-projekt",
|
||||
"version": "0.1.0",
|
||||
"type": "module",
|
||||
"scripts": {
|
||||
"start": "node index.js",
|
||||
"dev": "node --watch index.js"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
`.env` für Secrets (nie committen!), `.env.example` mit Dummy-Werten committen.
|
||||
|
||||
---
|
||||
@@ -1,292 +0,0 @@
|
||||
---
|
||||
marp: true
|
||||
theme: gaia
|
||||
paginate: true
|
||||
backgroundColor: #fff
|
||||
header: "Web Engineering – DHBW Stuttgart"
|
||||
footer: "Michael Czechowski – SoSe 2026"
|
||||
---
|
||||
|
||||
<style>
|
||||
:root {
|
||||
--color-foreground: #1a1a2e;
|
||||
--color-highlight: #d63384;
|
||||
--color-dimmed: #4a4a6a;
|
||||
}
|
||||
section.invert {
|
||||
--color-foreground: #fff;
|
||||
}
|
||||
section {
|
||||
font-size: 1.4rem;
|
||||
}
|
||||
h1 {
|
||||
color: #a02060;
|
||||
}
|
||||
section.invert h1 {
|
||||
color: #fff;
|
||||
}
|
||||
h2 {
|
||||
color: #1f2937;
|
||||
}
|
||||
section.invert h2 {
|
||||
color: #f48fb1;
|
||||
}
|
||||
pre {
|
||||
background: #0f0f23;
|
||||
color: #f48fb1;
|
||||
border-radius: 8px;
|
||||
border-left: 3px solid #d63384;
|
||||
}
|
||||
pre code {
|
||||
background: transparent;
|
||||
color: inherit;
|
||||
}
|
||||
code {
|
||||
background: #1a1a2e;
|
||||
color: #f48fb1;
|
||||
padding: 0.15em 0.4em;
|
||||
border-radius: 4px;
|
||||
}
|
||||
a {
|
||||
color: var(--color-highlight);
|
||||
}
|
||||
</style>
|
||||
|
||||
<!-- _class: invert -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _backgroundColor: #000 -->
|
||||
|
||||
# Web Engineering
|
||||
|
||||
**DHBW Stuttgart** · Informatik / Wirtschaftsinformatik
|
||||
|
||||
**Sommersemester 2026** · Sitzung 2 — HTML & CSS (Frameworks)
|
||||
|
||||
---
|
||||
|
||||
# Ressourcen zum Selbstlernen
|
||||
|
||||
- **CODE CRISPIES** — [codecrispi.es](https://codecrispi.es/)
|
||||
- **Online Code-Editor** — [codepen.io](https://codepen.io/pen/)
|
||||
- **MDN** (Mozilla Developer Network) — [developer.mozilla.org/de/](https://developer.mozilla.org/de/)
|
||||
- **Flexbox-Spiel** — [flexboxfroggy.com](https://flexboxfroggy.com/)
|
||||
- **Grid-Spiel** — [cssgridgarden.com](https://cssgridgarden.com/)
|
||||
|
||||
---
|
||||
|
||||
# Inhalt
|
||||
|
||||
Aufbauend auf den Grundlagen aus Sitzung 1.
|
||||
|
||||
1. Attribut-Selektoren
|
||||
2. Combinators (vertieft)
|
||||
3. Pseudo-Klassen — erweitert
|
||||
4. Shorthand Properties
|
||||
5. Flexbox-Shorthands
|
||||
6. Custom Properties (Variables)
|
||||
7. CSS Functions (`calc`, `clamp`, ...)
|
||||
8. Transition & Animation
|
||||
9. CSS Frameworks (Tailwind & Co.)
|
||||
|
||||
---
|
||||
|
||||
<!-- _class: invert -->
|
||||
<!-- _backgroundColor: #000 -->
|
||||
|
||||
# CSS: Extended
|
||||
|
||||
---
|
||||
|
||||
# CSS Selectors – Attribut-Selektoren
|
||||
|
||||
```css
|
||||
/* presence */
|
||||
[disabled] { opacity: 0.5; }
|
||||
|
||||
/* exact value */
|
||||
[type="email"] { border-color: blue; }
|
||||
|
||||
/* contains word */
|
||||
[class~="btn"] { cursor: pointer; }
|
||||
|
||||
/* starts with */
|
||||
[href^="https"] { color: green; }
|
||||
|
||||
/* ends with */
|
||||
[src$=".png"] { border: 1px solid #ccc; }
|
||||
|
||||
/* contains substring */
|
||||
[class*="icon"] { padding-left: 20px; }
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# CSS Combinators
|
||||
|
||||
```css
|
||||
/* Child (direkt) */
|
||||
div > p { margin: 0; }
|
||||
|
||||
/* Descendant (Nachkomme) */
|
||||
div p { margin: 0; }
|
||||
|
||||
/* Next Sibling */
|
||||
h1 + p { font-size: 1.2em; }
|
||||
|
||||
/* Subsequent Sibling */
|
||||
h1 ~ p { color: #666; }
|
||||
|
||||
/* Selector List */
|
||||
h1, h2, h3 { font-weight: bold; }
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# Pseudo Classes – Erweitert
|
||||
|
||||
```css
|
||||
/* Form States */
|
||||
:valid { border-color: green; }
|
||||
:invalid { border-color: red; }
|
||||
:placeholder-shown { color: #999; }
|
||||
|
||||
/* Content */
|
||||
:before { content: "→ "; }
|
||||
:after { content: " [Wichtig]"; }
|
||||
:first-letter { font-size: 2em; }
|
||||
:first-line { font-weight: bold; }
|
||||
|
||||
/* NOT */
|
||||
:not(.disabled) { pointer-events: auto; }
|
||||
:not(:last-child) { border-bottom: 1px solid #ccc; }
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# Shorthand Properties
|
||||
|
||||
```css
|
||||
/* margin: top right bottom left */
|
||||
margin: 10px 20px 10px 20px;
|
||||
|
||||
/* centering */
|
||||
margin: 0 auto;
|
||||
|
||||
/* padding same */
|
||||
padding: 20px;
|
||||
|
||||
/* border: width style color */
|
||||
border: 1px solid #333;
|
||||
|
||||
/* background: color image position/size repeat */
|
||||
background: #fff url(logo.png) 0 0 no-repeat;
|
||||
|
||||
/* font: style variant weight size/line-height family */
|
||||
font: italic normal bold 16px/1.5 Arial, sans-serif;
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# Flexbox Shorthands
|
||||
|
||||
```css
|
||||
/* flex: grow shrink basis */
|
||||
flex: 1 0 auto;
|
||||
|
||||
/* place-items: align-items justify-items */
|
||||
place-items: center stretch;
|
||||
|
||||
/* place-content: align-content justify-content */
|
||||
place-content: space-between center;
|
||||
|
||||
/* gap: row-gap column-gap */
|
||||
gap: 20px 40px;
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# CSS Custom Properties (Variables)
|
||||
|
||||
```css
|
||||
:root {
|
||||
--primary-color: #d63384;
|
||||
--spacing: 20px;
|
||||
--radius: 8px;
|
||||
}
|
||||
|
||||
.button {
|
||||
background: var(--primary-color);
|
||||
padding: var(--spacing);
|
||||
border-radius: var(--radius);
|
||||
}
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# CSS Functions
|
||||
|
||||
```css
|
||||
/* calc */
|
||||
width: calc(100% - 40px);
|
||||
|
||||
/* min/max/clamp */
|
||||
width: min(100%, 600px);
|
||||
font-size: clamp(14px, 2vw, 20px);
|
||||
|
||||
/* var with fallback */
|
||||
color: var(--text-color, #333);
|
||||
|
||||
/* rgb/rgba/hsl/hsla */
|
||||
color: hsl(200, 100%, 50%);
|
||||
background: rgba(0, 0, 0, 0.5);
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# Transition & Animation
|
||||
|
||||
```css
|
||||
/* transition: property duration timing-function */
|
||||
transition: all 0.3s ease-in-out;
|
||||
transition: background 0.2s, transform 0.1s;
|
||||
|
||||
/* animation */
|
||||
@keyframes fadeIn {
|
||||
from { opacity: 0; }
|
||||
to { opacity: 1; }
|
||||
}
|
||||
|
||||
.fade-in {
|
||||
animation: fadeIn 0.5s ease-out;
|
||||
}
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# CSS Frameworks
|
||||
|
||||
| Framework | Stil |
|
||||
|-----------|------|
|
||||
| **Bootstrap** | Komponenten + Grid, opinionated |
|
||||
| **Tailwind CSS** | Utility-First, atomar |
|
||||
| **Bulma** | klassisch, ohne JS |
|
||||
| **shadcn/ui** | kopierbare Komponenten (Tailwind-basiert) |
|
||||
| **Flowbite** | Tailwind-Komponentenbib. |
|
||||
|
||||
---
|
||||
|
||||
# Tailwind CSS – Beispiel
|
||||
|
||||
```html
|
||||
<button class="bg-blue-600 hover:bg-blue-700
|
||||
text-white font-semibold
|
||||
px-4 py-2 rounded-lg
|
||||
transition shadow-sm">
|
||||
Klick mich
|
||||
</button>
|
||||
```
|
||||
|
||||
- Keine eigenen CSS-Klassen mehr
|
||||
- JIT-Compiler erzeugt nur genutzte Klassen
|
||||
- Design-System via `tailwind.config.js`
|
||||
|
||||
@@ -0,0 +1,412 @@
|
||||
---
|
||||
marp: true
|
||||
theme: gaia
|
||||
paginate: true
|
||||
backgroundColor: #fff
|
||||
header: "Web Engineering – DHBW Stuttgart"
|
||||
footer: "Michael Czechowski – SoSe 2026"
|
||||
title: JavaScript & Frameworks
|
||||
---
|
||||
|
||||
<style>
|
||||
:root {
|
||||
--color-foreground: #1a1a2e;
|
||||
--color-highlight: #d63384;
|
||||
--color-dimmed: #4a4a6a;
|
||||
}
|
||||
section.invert {
|
||||
--color-foreground: #fff;
|
||||
}
|
||||
section {
|
||||
font-size: 1.4rem;
|
||||
}
|
||||
h1 {
|
||||
color: #a02060;
|
||||
}
|
||||
section.invert h1 {
|
||||
color: #fff;
|
||||
}
|
||||
h2 {
|
||||
color: #1f2937;
|
||||
}
|
||||
section.invert h2 {
|
||||
color: #f48fb1;
|
||||
}
|
||||
pre {
|
||||
background: #0f0f23;
|
||||
color: #f48fb1;
|
||||
border-radius: 8px;
|
||||
border-left: 3px solid #d63384;
|
||||
}
|
||||
pre code {
|
||||
background: transparent;
|
||||
color: inherit;
|
||||
}
|
||||
code {
|
||||
background: #1a1a2e;
|
||||
color: #f48fb1;
|
||||
padding: 0.15em 0.4em;
|
||||
border-radius: 4px;
|
||||
}
|
||||
a {
|
||||
color: var(--color-highlight);
|
||||
}
|
||||
</style>
|
||||
|
||||
<!-- _class: invert -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _backgroundColor: #000 -->
|
||||
|
||||

|
||||
|
||||
# Web Engineering
|
||||
|
||||
**DHBW Stuttgart** · Informatik / Wirtschaftsinformatik
|
||||
|
||||
**Sommersemester 2026** · Sitzung 3 — JS, Frameworks & Build Tools
|
||||
|
||||
[https://librete.ch/dhbw/](https://librete.ch/dhbw/)
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
# Ressourcen zum Selbstlernen
|
||||
|
||||
- **CODE CRISPIES** — [codecrispi.es](https://codecrispi.es/)
|
||||
- **Online Code-Editor** — [codepen.io](https://codepen.io/pen/)
|
||||
- **MDN** (Mozilla Developer Network) — [developer.mozilla.org/de/](https://developer.mozilla.org/de/)
|
||||
- **Flexbox-Spiel** — [flexboxfroggy.com](https://flexboxfroggy.com/)
|
||||
- **Grid-Spiel** — [cssgridgarden.com](https://cssgridgarden.com/)
|
||||
|
||||
|
||||
<!-- _class: invert -->
|
||||
<!-- _header: '' -->
|
||||
<!-- _backgroundColor: #000 -->
|
||||
|
||||
# JavaScript
|
||||
|
||||
---
|
||||
|
||||
# ECMAScript
|
||||
|
||||
- **Ecma International** — European Computer Manufacturers Association
|
||||
- Seit **1997** standardisiert als **ECMA-262**
|
||||
- Implementierungen: **JavaScript** (Netscape, später Mozilla), **JScript** (Microsoft), **ActionScript** (Adobe Flash) etc.
|
||||
- Aktuelle Version: **ECMAScript 2024 (ES15)**, jährliche Releases
|
||||
|
||||
**Browser-Kompatibilität:**
|
||||
- Faustregel: **ES2017+** läuft in allen modernen Browsern
|
||||
- Ältere Targets via Transpiler (Babel, esbuild, swc, tsc)
|
||||
- Kompatibilitätstabelle: [kangax.github.io/compat-table](https://kangax.github.io/compat-table/)
|
||||
|
||||
---
|
||||
|
||||
# JavaScript Grundlagen
|
||||
|
||||
```javascript
|
||||
// Variablen
|
||||
let name = "Welt";
|
||||
const alter = 25;
|
||||
|
||||
// Funktionen
|
||||
function gruss(name) {
|
||||
return `Hallo, ${name}!`;
|
||||
}
|
||||
|
||||
// Arrow Functions
|
||||
const add = (a, b) => a + b;
|
||||
|
||||
// Arrays
|
||||
const arr = [1, 2, 3];
|
||||
arr.map(x => x * 2); // [2, 4, 6]
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# DOM Manipulation
|
||||
|
||||
```javascript
|
||||
// Element auswählen
|
||||
const title = document.querySelector('h1');
|
||||
|
||||
// Inhalt ändern
|
||||
title.textContent = 'Neue Überschrift';
|
||||
|
||||
// Event Listener
|
||||
button.addEventListener('click', () => {
|
||||
alert('Geklickt!');
|
||||
});
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# Fetch API
|
||||
|
||||
```javascript
|
||||
fetch('/api/products')
|
||||
.then(res => res.json())
|
||||
.then(data => {
|
||||
console.log(data);
|
||||
})
|
||||
.catch(err => console.error(err));
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
# Async/Await
|
||||
|
||||
```javascript
|
||||
async function loadProducts() {
|
||||
try {
|
||||
const res = await fetch('/api/products');
|
||||
const data = await res.json();
|
||||
return data;
|
||||
} catch (err) {
|
||||
console.error('Fehler:', err);
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
<!-- _backgroundColor: #050517 -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
<!-- _backgroundColor: #050517 -->
|
||||
<!-- _color: #e2e8f0 -->
|
||||
|
||||
# Web Engineering Mandala
|
||||
|
||||
Interaktive version: [nextlevelshit.github.io/web-engineering-mandala](https://nextlevelshit.github.io/web-engineering-mandala/)
|
||||
|
||||
3 Schichten:
|
||||
- **Core Layer** — JS, HTML, CSS (vanilla)
|
||||
- **Build Layer** — bundlers, runtimes, template engines, pre/post processors
|
||||
- **Application Layer** — frontend, backend, frameworks, SSR, CSS-utilities
|
||||
|
||||
3 Segmente: HTML (blau) · JavaScript (rot) · CSS (grün) · Mittelpunkt: `package.json`
|
||||
|
||||
---
|
||||
|
||||
# JavaScript Frameworks – Kategorien
|
||||
|
||||
| Kategorie | Beispiele |
|
||||
|-----------|-----------|
|
||||
| **CSS Frameworks** | Tailwind, Bootstrap, shadcn/ui |
|
||||
| **Frontend Frameworks** | React, Vue, Svelte, Astro |
|
||||
| **Rendering / Meta** | Next.js, Nuxt, Gatsby |
|
||||
| **Build Tools / Bundler** | Webpack, Vite, Parcel, esbuild |
|
||||
| **Backend Frameworks** | Express, Fastify, NestJS |
|
||||
|
||||
---
|
||||
|
||||
# Vanilla JS – Counter
|
||||
|
||||
```html
|
||||
<button id="myButton">Clicked 0 times</button>
|
||||
<script>
|
||||
let count = 0;
|
||||
const btn = document.getElementById('myButton');
|
||||
btn.addEventListener('click', () => {
|
||||
count++;
|
||||
btn.textContent = `Clicked ${count} times`;
|
||||
});
|
||||
</script>
|
||||
```
|
||||
|
||||
**Pro:** hohe Kompatibilität, simpel
|
||||
**Contra:** State-Management und Re-Rendering werden schnell komplex
|
||||
|
||||
---
|
||||
|
||||
# React – Counter (JSX)
|
||||
|
||||

|
||||
|
||||
```jsx
|
||||
import { useState } from "react";
|
||||
|
||||
function MyButton() {
|
||||
const [count, setCount] = useState(0);
|
||||
|
||||
return (
|
||||
<button onClick={() => setCount(count + 1)}>
|
||||
Clicked {count} times
|
||||
</button>
|
||||
);
|
||||
}
|
||||
```
|
||||
|
||||
- **Component-Based** Architecture
|
||||
- **Virtual DOM**, JSX, Hooks
|
||||
- großes Ökosystem (React Router, Redux, …)
|
||||
|
||||
---
|
||||
|
||||
# Vue 3 – Composition API
|
||||
|
||||

|
||||
|
||||
```vue
|
||||
<script setup>
|
||||
import { ref } from "vue";
|
||||
const count = ref(0);
|
||||
</script>
|
||||
|
||||
<template>
|
||||
<button @click="count++">
|
||||
Clicked {{ count }} times
|
||||
</button>
|
||||
</template>
|
||||
```
|
||||
|
||||
- **Reactive Data Binding**
|
||||
- Single-File Components (`.vue`)
|
||||
- Vue Router, Pinia (State)
|
||||
|
||||
---
|
||||
|
||||
# Svelte – Counter
|
||||
|
||||

|
||||
|
||||
```svelte
|
||||
<script>
|
||||
let count = 0;
|
||||
</script>
|
||||
|
||||
<button on:click={() => count += 1}>
|
||||
Clicked {count} {count === 1 ? 'time' : 'times'}
|
||||
</button>
|
||||
```
|
||||
|
||||
- **Compiler-Based** – kein Runtime-Framework
|
||||
- Reactive Assignments (`let`)
|
||||
- Built-in Animationen
|
||||
|
||||
---
|
||||
|
||||
# Astro – Content-First
|
||||
|
||||

|
||||
|
||||
```astro
|
||||
---
|
||||
const greeting = "Hallo DHBW";
|
||||
---
|
||||
<html>
|
||||
<body>
|
||||
<h1>{greeting}</h1>
|
||||
<MyReactButton client:load />
|
||||
</body>
|
||||
</html>
|
||||
```
|
||||
|
||||
- **Islands Architecture** – Komponenten mehrerer Frameworks mischen
|
||||
- Default: kein JS im Output (nur statisches HTML)
|
||||
- Hydration on demand (`client:load`, `client:visible`)
|
||||
|
||||
---
|
||||
|
||||
# Rendering Frameworks
|
||||
|
||||
| | Frontend | SSR | SSG | File Routing |
|
||||
|---|---|---|---|---|
|
||||
| **Next.js** | React | ja | ja | `/app/page.js` |
|
||||
| **Nuxt** | Vue | ja | ja | `/pages/*.vue` |
|
||||
| **Gatsby** | React | nein | ja | GraphQL Data |
|
||||
|
||||
---
|
||||
|
||||
# Build Tools – Webpack
|
||||
|
||||

|
||||
|
||||
- Module Bundling (JS, CSS, Images)
|
||||
- Module Loaders + großes Plugin-Ökosystem
|
||||
- Code Splitting, HMR
|
||||
- Konfigurations-lastig (`webpack.config.js`)
|
||||
|
||||
→ Standard für viele Legacy-Setups.
|
||||
|
||||
---
|
||||
|
||||
# Build Tools – Vite
|
||||
|
||||

|
||||
|
||||
```javascript
|
||||
// vite.config.js
|
||||
import { defineConfig } from "vite";
|
||||
|
||||
export default defineConfig({
|
||||
server: {
|
||||
proxy: {
|
||||
"/api": {
|
||||
target: "http://localhost:4567",
|
||||
changeOrigin: true,
|
||||
rewrite: (path) => path.replace(/^\/api/, "")
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
```
|
||||
|
||||
- Rollup unter der Haube, **HMR mit ES Modules**
|
||||
- Tree-Shaking, Code Splitting, React + Vue out-of-the-box
|
||||
|
||||
---
|
||||
|
||||
# Build Tools – Parcel
|
||||
|
||||

|
||||
|
||||
```json
|
||||
{
|
||||
"name": "my-project",
|
||||
"source": "src/index.html",
|
||||
"browserslist": "> 0.5%, last 2 versions, not dead",
|
||||
"scripts": {
|
||||
"start": "parcel",
|
||||
"build": "parcel build"
|
||||
},
|
||||
"devDependencies": {
|
||||
"parcel": "latest"
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
- **Zero-Config**
|
||||
- Auto-Resolution, HMR
|
||||
- TS / CSS-Preprocessors out-of-the-box
|
||||
|
||||
---
|
||||
|
||||
# Microfrontends
|
||||
|
||||
- Mehrere unabhängige Frontend-Apps in einer Page
|
||||
- Module Federation (Webpack 5)
|
||||
- **single-spa**: https://single-spa.js.org/
|
||||
- Anwendungsfall: große Teams, unterschiedliche Tech-Stacks pro Domain
|
||||
|
||||
→ Komplexitätskosten: nur bei echtem Skalierungsbedarf.
|
||||
|
||||
---
|
||||
|
||||
# Demo-Repos
|
||||
|
||||
- https://github.com/nextlevelshit/dhbw-client-js (Counter, multi-framework)
|
||||
- https://github.com/nextlevelshit/node-cache-api (API + Tests)
|
||||
- https://github.com/nextlevelshit/dhbw-docker (Compose-Stack)
|
||||
|
||||
@@ -62,6 +62,15 @@ a {
|
||||
|
||||
**Sommersemester 2026** · Sitzung 4 — Node.js: Scripting, Running and Building
|
||||
|
||||
[https://librete.ch/dhbw/](https://librete.ch/dhbw/)
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
# Ressourcen zum Selbstlernen
|
||||
@@ -62,6 +62,15 @@ a {
|
||||
|
||||
**Sommersemester 2026** · Sitzung 5 — Express API, CRUD und Middlewares
|
||||
|
||||
[https://librete.ch/dhbw/](https://librete.ch/dhbw/)
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
# Ressourcen zum Selbstlernen
|
||||
@@ -63,6 +63,15 @@ a {
|
||||
|
||||
**Sommersemester 2026** · Sitzung 7 — Testing
|
||||
|
||||
[https://librete.ch/dhbw/](https://librete.ch/dhbw/)
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
# Ressourcen zum Selbstlernen
|
||||
@@ -63,6 +63,15 @@ a {
|
||||
|
||||
**Sommersemester 2026** · Sitzung 8 — TypeScript
|
||||
|
||||
[https://librete.ch/dhbw/](https://librete.ch/dhbw/)
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
<!-- _class: invert -->
|
||||
@@ -63,6 +63,15 @@ a {
|
||||
|
||||
**Sommersemester 2026** · Sitzung 9 — Docker, Proxies and DBs
|
||||
|
||||
[https://librete.ch/dhbw/](https://librete.ch/dhbw/)
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
<!-- _class: invert -->
|
||||
@@ -63,6 +63,15 @@ a {
|
||||
|
||||
**Sommersemester 2026** · Sitzung 10 — Wrap-up & Projektsupport
|
||||
|
||||
[https://librete.ch/dhbw/](https://librete.ch/dhbw/)
|
||||
|
||||
---
|
||||
|
||||
<!-- _header: '' -->
|
||||
<!-- _footer: '' -->
|
||||
|
||||

|
||||
|
||||
---
|
||||
|
||||
<!-- _class: invert -->
|
||||
|
After Width: | Height: | Size: 1.6 KiB |
|
After Width: | Height: | Size: 35 KiB |
|
After Width: | Height: | Size: 4.6 KiB |
|
After Width: | Height: | Size: 147 B |
|
After Width: | Height: | Size: 59 KiB |
|
After Width: | Height: | Size: 1.5 KiB |
|
After Width: | Height: | Size: 13 KiB |
|
After Width: | Height: | Size: 12 KiB |
|
After Width: | Height: | Size: 29 KiB |
|
After Width: | Height: | Size: 41 KiB |
|
After Width: | Height: | Size: 1.1 KiB |
@@ -0,0 +1,15 @@
|
||||
<svg id="Ebene_1" data-name="Ebene 1" xmlns="http://www.w3.org/2000/svg" width="433" height="97" viewBox="0 0 433 97">
|
||||
<g>
|
||||
<g id="logotype">
|
||||
<path id="logotype-b-47" d="M185.2,46.88a13.77,13.77,0,0,0,8.8-13c0-11.7-8.3-17.5-19.7-17.5H144.4V80h32.5c10,0,19.8-7,19.8-17.7C196.7,49.58,185.2,47,185.2,46.88ZM160,29.58h11.6a5.66,5.66,0,0,1,6,5.31q0,.34,0,.69a5.93,5.93,0,0,1-6,5.81H159.9Zm11.7,37.1H160.1V54.18h11.3c5.7,0,8.4,2.5,8.4,6.2C179.8,65,176.4,66.68,171.7,66.68Z" style="fill: #ed0007;fill-rule: evenodd"/>
|
||||
<path id="logotype-o-47" d="M231.1,14.78c-18.4,0-29.2,14.7-29.2,33.3s10.8,33.3,29.2,33.3,29.2-14.6,29.2-33.3S249.6,14.78,231.1,14.78Zm0,51.4c-9,0-13.5-8.1-13.5-18.1s4.5-18,13.5-18,13.6,8.1,13.6,18C244.7,58.18,240.1,66.18,231.1,66.18Z" style="fill: #ed0007;fill-rule: evenodd"/>
|
||||
<path id="logotype-s-47" d="M294.2,41.38l-2.2-.5c-5.4-1.1-9.7-2.5-9.7-6.4,0-4.2,4.1-5.9,7.7-5.9a17.86,17.86,0,0,1,13,5.9l9.9-9.8c-4.5-5.1-11.8-10-23.2-10-13.4,0-23.6,7.5-23.6,20,0,11.4,8.2,17,18.2,19.1l2.2.5c8.3,1.7,11.4,3,11.4,7,0,3.8-3.4,6.3-8.6,6.3-6.2,0-11.8-2.7-16.1-8.2l-10.1,10c5.6,6.7,12.7,11.9,26.4,11.9,11.9,0,24.6-6.8,24.6-20.7C314.3,46.08,303.3,43.28,294.2,41.38Z" style="fill: #ed0007;fill-rule: evenodd"/>
|
||||
<path id="logotype-c-47" d="M349.7,66.18c-7,0-14.3-5.8-14.3-18.5,0-11.3,6.8-17.6,13.9-17.6,5.6,0,8.9,2.6,11.5,7.1l12.8-8.5c-6.4-9.7-14-13.8-24.5-13.8-19.2,0-29.6,14.9-29.6,32.9,0,18.9,11.5,33.7,29.4,33.7,12.6,0,18.6-4.4,25.1-13.8L361.1,59C358.5,63.18,355.7,66.18,349.7,66.18Z" style="fill: #ed0007;fill-rule: evenodd"/>
|
||||
<polygon id="logotype-h-47" points="416.3 16.38 416.3 39.78 397 39.78 397 16.38 380.3 16.38 380.3 79.98 397 79.98 397 54.88 416.3 54.88 416.3 79.98 433 79.98 433 16.38 416.3 16.38" style="fill: #ed0007;fill-rule: evenodd"/>
|
||||
</g>
|
||||
<g id="symbol">
|
||||
<path d="M48.2.18a48.2,48.2,0,1,0,48.2,48.2A48.2,48.2,0,0,0,48.2.18Zm0,91.9a43.7,43.7,0,1,1,43.7-43.7,43.71,43.71,0,0,1-43.7,43.7Z"/>
|
||||
<path d="M68.1,18.28H64.8v16.5H31.7V18.28H28.3a36.06,36.06,0,0,0,0,60.2h3.4V62H64.8v16.5h3.3a36.05,36.05,0,0,0,0-60.2ZM27.1,72A31.59,31.59,0,0,1,24.47,27.4a32.51,32.51,0,0,1,2.63-2.62Zm37.7-14.6H31.7V39.28H64.8Zm4.5,14.5v-10h0V34.78h0v-10a31.65,31.65,0,0,1,2.39,44.71A33.68,33.68,0,0,1,69.3,71.88Z"/>
|
||||
</g>
|
||||
</g>
|
||||
</svg>
|
||||
|
After Width: | Height: | Size: 2.2 KiB |
|
Before Width: | Height: | Size: 167 KiB After Width: | Height: | Size: 77 KiB |
|
After Width: | Height: | Size: 911 KiB |
@@ -0,0 +1 @@
|
||||
<svg width="189" height="45" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><path d="M-46-32h1440V68H-46z"/><g fill-rule="nonzero"><g fill="#0E1111"><path d="M133.298 34.907v-1.509L142.48 20.1h-8.71v-1.982h11.44v1.513l-9.183 13.296h9.494v1.981h-12.222M129.365 35.163c-2.235 0-2.145-.927-2.145-3.611V18.117h2.132V31.82l.013 3.343M120.61 34.907v-12.19c0-2.181-1.192-2.854-3.135-2.854-2.037 0-3.071.371-4.23 1.075v13.97h-2.194v-16.79h1.223l.471 1.41c1.472-1.175 3.07-1.746 4.73-1.746 3.728 0 5.327 1.812 5.327 5.039v12.086h-2.193M100.87 33.163c-2.038 0-3.168-.37-4.389-1.075v-11.15c1.221-.704 2.351-1.075 4.388-1.075 3.76 0 4.229 3.325 4.229 6.65s-.47 6.65-4.229 6.65zm0-15.381a7.795 7.795 0 00-4.389 1.376V9.723h-2.193v25.184h1.221l.47-1.377c1.63 1.109 3.196 1.714 4.89 1.714 5.045 0 6.422-3.896 6.422-8.731s-1.377-8.731-6.422-8.731zM89.417 35.24c-2.256 0-2.148-1.004-2.148-3.688V18.117h2.13V31.82l.018 3.42M72.667 25.674c.092-3.023.751-5.811 4.387-5.811 3.603 0 3.76 2.822 3.76 5.81h-8.147zm10.34.839c0-4.835-.627-8.731-5.953-8.731-5.297 0-6.581 3.896-6.581 8.73 0 4.836 1.284 8.732 6.581 8.732 1.534 0 3.413-.168 5.17-1.008v-2.013c-1.535.704-2.914.94-5.17.94-3.542 0-4.263-2.653-4.387-5.574h10.34v-1.076zM54.492 34.907V9.723h2.131v23.07h10.874v2.114H54.492M188.975 34.9V9.723h-2.12v11.011h-11.658V9.724h-2.119V34.9h2.12V22.848h11.657V34.9h2.12M158.053 11.837h11.128V9.723h-13.248V34.9h2.12V22.848h10.037v-2.114h-10.037v-8.897M87.261 15.025h2.142v-2.24h-2.142zM127.222 15.025h2.142v-2.24h-2.142z"/></g><path d="M.195 1.476l9.617-.42v43.75L.2 42.284C.2 23.158.197 8.006.195 1.476M39.777 43.49l-9.655.422V.162l9.65 2.953c0 19.392.002 34.192.005 40.375" fill="#0288d1"/><path fill="#74BEE6" d="M9.812 34.613v10.193l15.285-.67V33.888l-15.285.725M15.11.837v10.285l15.012-.724V.161L15.11.837"/></g></g></svg>
|
||||
|
After Width: | Height: | Size: 1.8 KiB |
|
After Width: | Height: | Size: 197 KiB |
|
After Width: | Height: | Size: 48 KiB |
|
After Width: | Height: | Size: 60 KiB |
|
Before Width: | Height: | Size: 3.1 KiB |
@@ -0,0 +1,78 @@
|
||||
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
||||
<!-- Created with Inkscape (http://www.inkscape.org/) -->
|
||||
<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.0" width="123.1184" height="38" id="svg2">
|
||||
<defs id="defs4"/>
|
||||
<g transform="translate(-4.113659e-8,-8.1875909)" id="g2881">
|
||||
<g transform="matrix(0.8227318,0,0,0.8227318,0,8.1875911)" id="g3725">
|
||||
<path d="m 5.9058686,3.5864545 c 0,1.6289778 -1.3205475,2.9495254 -2.9495254,2.9495254 -1.628978,0 -2.9495254,-1.3205476 -2.9495254,-2.9495254 0,-1.6289779 1.3205474,-2.94952547 2.9495254,-2.94952547 1.6289779,0 2.9495254,1.32054757 2.9495254,2.94952547 l 0,0 z" id="path2492" style="fill:#022d6f;fill-opacity:1;fill-rule:nonzero;stroke:none;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate"/>
|
||||
<use transform="translate(123.33173,0.52756266)" id="use2494" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(12.995121,0.24968358)" id="use3266" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(-0.0021669,6.4942292)" id="use3268" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(-0.00100324,13.007016)" id="use3270" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(1.6068057e-4,19.515151)" id="use3272" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(5.6386012,22.744639)" id="use3274" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(-0.00681775,26.008952)" id="use3276" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(12.102606,22.633932)" id="use3278" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(19.117759,2.4186714)" id="use3280" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(22.403372,8.0486075)" id="use3282" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(18.008113,19.840656)" id="use3284" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(21.756631,14.51843)" id="use3286" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(-0.00100325,32.490405)" id="use3290" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(0.00132398,38.988066)" id="use3292" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(37.905739,3.6984537)" id="use3294" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(65.078186,33.204228)" id="use3296" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(33.398214,8.5473695)" id="use3298" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(30.724945,14.638897)" id="use3300" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(30.159334,21.213576)" id="use3302" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(31.812768,27.679762)" id="use3304" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(35.421974,33.202782)" id="use3306" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(40.652784,37.299478)" id="use3308" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(43.733988,0.5434759)" id="use3310" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(50.271054,-0.58340514)" id="use3312" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(56.815356,0.50441766)" id="use3314" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(46.959848,39.447642)" id="use3316" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(62.637816,3.6608425)" id="use3318" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(53.579391,39.44039)" id="use3320" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(67.139555,8.5531567)" id="use3322" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(69.779551,14.64179)" id="use3324" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(70.340823,21.210681)" id="use3326" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(79.933056,19.51385)" id="use3328" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(59.8575,37.257529)" id="use3330" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(68.722105,27.673974)" id="use3332" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(6.4702426,5.7452075e-4)" id="use3334" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(79.938844,13.014391)" id="use3336" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(79.933047,0.00245617)" id="use3338" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(79.934503,6.494682)" id="use3340" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(85.563127,3.2586948)" id="use3342" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(89.846429,8.1177379)" id="use3344" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(94.152881,13.004267)" id="use3346" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(79.938841,26.013309)" id="use3348" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(98.462222,17.886454)" id="use3350" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(102.76578,22.745497)" id="use3352" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(79.930164,32.496854)" id="use3354" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(108.40887,26.016202)" id="use3356" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(108.40597,0.00390394)" id="use3358" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(108.40887,6.4888947)" id="use3360" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(108.40742,13.012946)" id="use3362" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(108.41031,19.509501)" id="use3364" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(79.933058,38.984738)" id="use3366" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(108.40308,32.498301)" id="use3368" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(108.40308,38.98329)" id="use3370" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(118.86037,5.2694337)" id="use3372" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(118.33815,11.771784)" id="use3374" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(122.73574,16.555607)" id="use3376" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(129.72991,-0.63692924)" id="use3378" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(136.11652,0.46102075)" id="use3380" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(128.89236,18.606849)" id="use3382" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(135.21099,20.106946)" id="use3384" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(142.06329,3.0879996)" id="use3386" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(141.06815,22.998648)" id="use3388" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(118.41627,34.426578)" id="use3390" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(143.73998,28.915145)" id="use3392" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(123.96821,37.788408)" id="use3394" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(130.21596,39.651611)" id="use3396" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(136.68652,38.987622)" id="use3398" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
<use transform="translate(141.93608,35.149863)" id="use3400" style="fill:#022d6f;fill-opacity:1" x="0" y="0" width="117" height="36" xlink:href="#path2492"/>
|
||||
</g>
|
||||
</g>
|
||||
</svg>
|
||||
|
After Width: | Height: | Size: 12 KiB |
|
After Width: | Height: | Size: 441 B |