update 223015b chapter 1: new slides, speaker notes, abbreviation fixes

- add download/upload speed slides with ADSL/FTTH context
- add quiz slide (250 Mbit/s → MB/min)
- add analog vs. digital and sampling slides
- add cd-audio vertiefung (erklaerung slide)
- expand "was sind daten?" with content
- expand speaker notes with sources and terminology (DE/EN)
- resolve all abbreviations in speaker notes: FTTH, ITU, NTSC, PAL, NHK, IEC
- fix typo: "eie" → "eine" binärdatei
- fix spelling: "spektrogram" → "spektrogramm"
- update zettabyte example and 181 ZB as projection not fact
This commit is contained in:
2026-04-16 18:10:00 +02:00
parent 7dd46de5d9
commit 81156284ac

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