rename materials wtf1-3 to hex1-3 and add hex4, hex5

- replace grayscale-gradient.png with svg (256 discrete rects)
- add grayscale-zoom.svg: 16 brightest shades with decimal + hex labels
- add zoom slide after '256 shades of gray'
- minor tweaks: Mbps capitalization, remove redundant '256' prefix in states list

slides/223015b/01-grundlagen-text-audio.md

@@ -130,6 +130,114 @@ Hochschule der Medien Stuttgart
 
 ---
 
+
+# Datenwachstum der Menschheit
+
+| Jahr | Datenmenge | Kontext |
+|------|------------|---------|
+| **100.000 v. u. Z.** | 0 | Erste Menschen, nur Sprache |
+| **3.000 v. u. Z.** | ~wenige KB | Keilschrift, Hieroglyphen |
+| **1450** | ~wenige GB | Gutenberg, Buchdruck |
+| **1986** | **2,6 EB** | 99% analog (Bücher, Vinyl, VHS) |
+| **2007** | **295 EB** | 94% digital |
+| **~2025** | **~175–181 ZB** | Prognose (IDC DataSphere Forecast, 2021) |
+
+<!--
+- Exponentielles Wachstum: Verdopplung alle ~2 Jahre
+- 1986: Letzte Ära mit analoger Dominanz
+- 2002: Wendepunkt — erstmals mehr digital als analog (Hilbert & López, Science 332, 2011)
+- 2007: 94% digital (ebd.)
+- ~175–181 ZB für 2025: IDC-Prognose von 2021, keine gemessene Zahl
+-->
+
+---
+
+
+# Der digitale Wendepunkt
+
+| Jahr | Analog | Digital | Digital-Anteil |
+|------|--------|---------|----------------|
+| **1986** | 2,6 EB | 0,02 EB | **1%** |
+| **2002** | — | — | **50%** (Wendepunkt) |
+| **2007** | 18 EB | 277 EB | **94%** |
+
+**Perspektive:**
+- 1986: "Petabyte" war ein theoretisches Konzept
+- Magnetband lebt: LTO-Tapes bleiben günstigstes Archivmedium (AWS Glacier, Film-Archive, Rechenzentren)
+
+<!--
+KLAUSURRELEVANT:
+- Wendepunkt 2002
+- Speichereinheiten (KB→MB→GB→TB→PB→EB→ZB)
+- Magnetband als Archivmedium
+
+QUELLE: Hilbert & López (2011): "The World's Technological Capacity to Store, Communicate, and Compute Information", Science 332(6025), 60–65. DOI: 10.1126/science.1200970
+
+METHODIK: 60 analoge + digitale Technologien untersucht (1986–2007)
+
+ANALOG damals: Bücher, Zeitungen, Vinyl, VHS, Filmrollen, Fotos
+DIGITAL damals: Festplatten, CDs, DVDs, frühe Flash-Speicher
+
+LTO-9 (2021): 18 TB pro Band, ~5€/TB für Cold Storage
+SSD: ~50€/TB, HDD: ~15€/TB, LTO: ~5€/TB
+-->
+
+---
+
+<!-- _class: erklaerung -->
+<!-- _header: '' -->
+<!-- _footer: '' -->
+
+# Digitaler Wendepunkt – Vertiefung
+
+Die Studie von Hilbert & López (Science 332, 2011) analysierte 60 Speichertechnologien von 1986–2007. Der Wendepunkt 2002 markiert den Moment, ab dem mehr Information digital als analog existierte.
+
+**Was 1986 „analog" bedeutete:**
+- Bücher, Zeitungen, Magazine: ~8 EB
+- Vinyl-Schallplatten, Musikkassetten: ~12 EB
+- VHS-Kassetten, Filmrollen: ~60 EB
+
+**Warum analog stagnierte:** Physische Medien haben Kapazitätsgrenzen. Eine VHS speichert ~10 GB; eine Blu-ray (2006) bereits 50 GB auf kleinerer Fläche.
+
+**LTO-Magnetband überlebt** trotz „alter" Technologie:
+| Medium | Kosten/TB | Lebensdauer | Energiebedarf |
+|--------|-----------|-------------|---------------|
+| SSD | ~50 € | 5–10 Jahre | Dauerstrom |
+| HDD | ~15 € | 3–5 Jahre aktiv | Dauerstrom |
+| LTO-9 | ~5 € | 30+ Jahre | Nur beim Zugriff |
+
+AWS Glacier, Google Coldline und Film-Archive nutzen LTO — langsamer Zugriff, aber unschlagbar günstig und langlebig.
+
+---
+
+<!-- _header: '' -->
+<!-- _footer: '' -->
+
+![bg fit](./assets/2011-hilbert.png)
+
+---
+
+# 181 Zettabyte – Was bedeutet das?
+
+**Prognose 2025:** Welt erzeugt ca. **175–181 ZB** pro Jahr
+
+- **1 ZB** = 250 Milliarden DVDs
+- **29 Terabyte** pro Sekunde (Hochrechnung)
+
+**Zum Vergleich:**
+- 2007: 295 Exabyte (Hilbert & López, Science 2011)
+- 2020: ~64 Zettabyte (IDC)
+- ~2025: ~175–181 ZB (IDC DataSphere Forecast, Prognose von 2021)
+
+<!--
+- Quelle: IDC Global DataSphere Forecast 2021–2025 — Prognose, keine gemessene Zahl
+- Tatsächlich gemessen 2024: ~149 ZB (IDC)
+- IoT-Geräte allein: prognostiziert ~73 ZB in 2025 (IDC)
+- Prognose 2028: ~394 ZB (IDC)
+-->
+
+---
+
 # Was sind (digitale) Daten?
 
 * **Text** — Artikel, Gesetzestext, Hausarbeit → `.txt` `.docx` `.pdf`
@@ -162,17 +270,37 @@ Hochschule der Medien Stuttgart
 - IDC DataSphere Forecast (2021): Prognose ~181 ZB produziert/repliziert für 2025
 -->
 
+
+---
+
+<!-- _header: '' -->
+<!-- _footer: '' -->
+
+# Bandbreite: Was bedeuten 150 Mbps?
+
+
+
+---
+
+<!-- _header: '' -->
+<!-- _footer: '' -->
+
+# Bandbreite: Was bedeuten 150 Mbps?
+
+**150Mbps** = **150 Mbit/s**
+
+
 ---
 
 <!-- _header: '' -->
 <!-- _footer: '' -->
 <!-- _class: 'klausur' -->
 
-# Bandbreite: Was bedeuten 150 mbps?
+# Bandbreite: Was bedeuten 150 Mbps?
 
-**150mbps** = **150 Mbit/s** ≠ **150 MB/s**
+**150Mbps** = **150 Mbit/s** ≠ ~~**150 MB/s**~~
 
-Wenn **1 Byte (B) = 8 bit (b)**,
+Wenn **8 bit (b) = 1 Byte (B)**
 
 dann **150 Mbit/s ÷ 8** = **18,75 MB/s**
 
@@ -196,10 +324,10 @@ dann **150 Mbit/s ÷ 8** = **18,75 MB/s**
 
 # Wie viele Megabyte können bei einer Bandbreite von 250 Mbit/s pro Minute heruntergeladen werden?
 
-* A) 1,8 GB
+* A) 31,25 MB
-* B) 31,25 MB
+* B) 1,875 GB = 1.875 MB
-* C) 1.875 MB
+* B) 187,5 MB
-* D) 250 MB
+* C) 250 MB
 
 <!--
 
@@ -825,7 +953,7 @@ Schreibweise mit "y" statt "i": bewusste Änderung zur Vermeidung von Verwechslu
 
 ### Die kleinste *adressierbare* Informationseinheit
 
-### 1 Byte = 8 Bits
+### 8 bit = 1 Byte
 
 
 ```
@@ -844,7 +972,7 @@ Rätsel: "Wenn sich das Wachstum einer Seerose auf einem Teich jeden Tag verdopp
 
 ### Die kleinste *adressierbare* Informationseinheit
 
-### 1 Byte = 8 Bits
+### 8 bit = 1 Byte
 
 
 ```
@@ -884,7 +1012,7 @@ Rätsel: "Wenn sich das Wachstum einer Seerose auf einem Teich jeden Tag verdopp
 
 ### Die kleinste *adressierbare* Informationseinheit
 
-### 1 Byte = 8 Bits
+### 8 bit = 1 Byte
 
 
 ```
@@ -908,7 +1036,7 @@ Rätsel: "Wenn sich das Wachstum einer Seerose auf einem Teich jeden Tag verdopp
 
 »256 Shades of Gray«
 
-![bg fit](./assets/grayscale-gradient.png)
+![bg fit](./assets/grayscale-gradient.svg)
 
 <!--
 256 Graustufen: 0 = Schwarz, 255 = Weiß
@@ -916,11 +1044,24 @@ Rätsel: "Wenn sich das Wachstum einer Seerose auf einem Teich jeden Tag verdopp
 
 ---
 
+<!-- _header: '' -->
+<!-- _footer: '' -->
+
+![bg fit](./assets/grayscale-zoom.svg)
+
+<!--
+Zoom auf die 16 hellsten Abstufungen (240–255)
+Jede Stufe = 1/255 ≈ 0,4% Helligkeitsunterschied
+Decimal + Hex labels zeigen: jede Stufe ist ein eigener Byte-Wert
+-->
+
+---
+
 # Was kann man mit 256 Zuständen machen?
 
-* **256 Zeichen** (Buchstaben, Zahlen, Symbole)
+* **Zeichen** (Buchstaben, Zahlen, Symbole)
-* **256 Helligkeit bzw. Luminanz** (0 = Schwarz/Dunkel, 255 = Weiß/Hell)
+* **Helligkeit bzw. Luminanz** (0 = Schwarz/Dunkel, 255 = Weiß/Hell)
-* **256 Lautstärkestufen**
+* **Lautstärkestufen** (dB)
 * **Zahlen 0–255** (oder –128 bis +127)
 
 <!--
@@ -1014,10 +1155,10 @@ Sog. RGB Tuple (geordnete endliche Liste)
 - Latein, Kyrillisch, Arabisch, Chinesisch, Japanisch...
 - Mathematische Symbole, Emoji, historische Schriften
 
-**UTF-8:** Variable Länge (1–4 Bytes pro Zeichen)
+**UTF-8:** Variable Länge (1–4 Byte pro Zeichen)
 - **Zeichen 0–127: identisch mit ASCII** (Abwärtskompatibilität!)
 - 1.112.064 gültige Codepunkte
-- Umlaute: 2 Bytes · CJK: 3 Bytes · Emoji: 4 Bytes
+- Umlaute: 2 Byte · CJK: 3 Byte · Emoji: 4 Byte
 
 <!--
 - Unicode Consortium: Non-Profit, gegründet 1991
@@ -1029,24 +1170,24 @@ Sog. RGB Tuple (geordnete endliche Liste)
 
 ---
 
-# Beispiel: Bytes zählen
+# Beispiel: Byte zählen
 
 **Text:** `"Hello·🌸·こんにちは·(Kon-ni-chi-wa)"`
 
-| Zeichen | Bytes |
+| Zeichen | Byte |
 |---------|-------|
-| `Hello·` | 6 × 1 = **6 Bytes** (ASCII) |
+| `Hello·` | 6 × 1 = **6 Byte** (ASCII) |
-| `🌸` | **4 Bytes** (Emoji) |
+| `🌸` | **4 Byte** (Emoji) |
 | `·` | **1 Byte** |
-| `こんにちは` | 5 × 3 = **15 Bytes** (Hiragana) |
+| `こんにちは` | 5 × 3 = **15 Byte** (Hiragana) |
-| `·(Kon-ni-chi-wa)` | **16 Bytes** (ASCII) |
+| `·(Kon-ni-chi-wa)` | **16 Byte** (ASCII) |
 
-**Gesamt: 42 Bytes** für 29 sichtbare Zeichen
+**Gesamt: 42 Byte** für 29 sichtbare Zeichen
 
 <!--
 - ASCII (Hello, Klammern) = 1 Byte pro Zeichen
 - Emoji 🌸 (Cherry Blossom U+1F338) = 4 Bytes
-- Hiragana こんにちは = 3 Bytes pro Zeichen (U+3040–309F)
+- Hiragana こんにちは = 3 Byte pro Zeichen (U+3040–309F)
 - は wird hier "wa" ausgesprochen (Partikel), nicht "ha"
 -->
 
@@ -1067,9 +1208,9 @@ Sog. RGB Tuple (geordnete endliche Liste)
 **Hexadezimal (Base 16):**
 `50 4E 47`
 
-`5 = 0101` `0 = 0000`
+`5 = 0101` `0 = 0000` = 5 * 16 + 0 = 80
-`4 = 0100` `E = 1110`
+`4 = 0100` `E = 1110` = 4 * 16 + ? = ?
-`4 = 0100` `7 = 0111`
+`4 = 0100` `7 = 0111` = ?
 
 **Jede Hex-Ziffer = 4 Bits (ein "Nibble")**
 0–9, A–F (10=A, 11=B, ..., 15=F)
@@ -1254,118 +1395,6 @@ Eselsbrücke: "Kilo Mega Giga Tera Peta Exa Zetta Yotta"
 -->
 
 
-
----
-
-# Datenwachstum der Menschheit
-
-| Jahr | Datenmenge | Kontext |
-|------|------------|---------|
-| **100.000 v. Chr.** | 0 | Erste Menschen, nur Sprache |
-| **3.000 v. Chr.** | ~wenige KB | Keilschrift, Hieroglyphen |
-| **1450** | ~wenige GB | Gutenberg, Buchdruck |
-| **1986** | **2,6 EB** | 99% analog (Bücher, Vinyl, VHS) |
-| **2007** | **295 EB** | 94% digital |
-| **~2025** | **~175–181 ZB** | Prognose (IDC DataSphere Forecast, 2021) |
-
-<!--
-- Exponentielles Wachstum: Verdopplung alle ~2 Jahre
-- 1986: Letzte Ära mit analoger Dominanz
-- 2002: Wendepunkt — erstmals mehr digital als analog (Hilbert & López, Science 332, 2011)
-- 2007: 94% digital (ebd.)
-- ~175–181 ZB für 2025: IDC-Prognose von 2021, keine gemessene Zahl
--->
-
----
-
-<!-- _class: klausur -->
-<!-- _header: '' -->
-<!-- _footer: '' -->
-<!-- _backgroundColor: #e3f2fd -->
-
-# Der digitale Wendepunkt
-
-| Jahr | Analog | Digital | Digital-Anteil |
-|------|--------|---------|----------------|
-| **1986** | 2,6 EB | 0,02 EB | **1%** |
-| **2002** | — | — | **50%** (Wendepunkt) |
-| **2007** | 18 EB | 277 EB | **94%** |
-
-**Perspektive:**
-- 1986: "Petabyte" war ein theoretisches Konzept
-- Magnetband lebt: LTO-Tapes bleiben günstigstes Archivmedium (AWS Glacier, Film-Archive, Rechenzentren)
-
-<!--
-KLAUSURRELEVANT:
-- Wendepunkt 2002
-- Speichereinheiten (KB→MB→GB→TB→PB→EB→ZB)
-- Magnetband als Archivmedium
-
-QUELLE: Hilbert & López (2011): "The World's Technological Capacity to Store, Communicate, and Compute Information", Science 332(6025), 60–65. DOI: 10.1126/science.1200970
-
-METHODIK: 60 analoge + digitale Technologien untersucht (1986–2007)
-
-ANALOG damals: Bücher, Zeitungen, Vinyl, VHS, Filmrollen, Fotos
-DIGITAL damals: Festplatten, CDs, DVDs, frühe Flash-Speicher
-
-LTO-9 (2021): 18 TB pro Band, ~5€/TB für Cold Storage
-SSD: ~50€/TB, HDD: ~15€/TB, LTO: ~5€/TB
--->
-
----
-
-<!-- _class: erklaerung -->
-<!-- _header: '' -->
-<!-- _footer: '' -->
-
-# Digitaler Wendepunkt – Vertiefung
-
-Die Studie von Hilbert & López (Science 332, 2011) analysierte 60 Speichertechnologien von 1986–2007. Der Wendepunkt 2002 markiert den Moment, ab dem mehr Information digital als analog existierte.
-
-**Was 1986 „analog" bedeutete:**
-- Bücher, Zeitungen, Magazine: ~8 EB
-- Vinyl-Schallplatten, Musikkassetten: ~12 EB
-- VHS-Kassetten, Filmrollen: ~60 EB
-
-**Warum analog stagnierte:** Physische Medien haben Kapazitätsgrenzen. Eine VHS speichert ~10 GB; eine Blu-ray (2006) bereits 50 GB auf kleinerer Fläche.
-
-**LTO-Magnetband überlebt** trotz „alter" Technologie:
-| Medium | Kosten/TB | Lebensdauer | Energiebedarf |
-|--------|-----------|-------------|---------------|
-| SSD | ~50 € | 5–10 Jahre | Dauerstrom |
-| HDD | ~15 € | 3–5 Jahre aktiv | Dauerstrom |
-| LTO-9 | ~5 € | 30+ Jahre | Nur beim Zugriff |
-
-AWS Glacier, Google Coldline und Film-Archive nutzen LTO — langsamer Zugriff, aber unschlagbar günstig und langlebig.
-
----
-
-<!-- _header: '' -->
-<!-- _footer: '' -->
-
-![bg fit](./assets/2011-hilbert.png)
-
----
-
-# 181 Zettabyte – Was bedeutet das?
-
-**Prognose 2025:** Welt erzeugt ca. **175–181 ZB** pro Jahr
-
-- **1 ZB** = 250 Milliarden DVDs
-- **29 Terabyte** pro Sekunde (Hochrechnung)
-
-**Zum Vergleich:**
-- 2007: 295 Exabyte (Hilbert & López, Science 2011)
-- 2020: ~64 Zettabyte (IDC)
-- ~2025: ~175–181 ZB (IDC DataSphere Forecast, Prognose von 2021)
-
-<!--
-- Quelle: IDC Global DataSphere Forecast 2021–2025 — Prognose, keine gemessene Zahl
-- Tatsächlich gemessen 2024: ~149 ZB (IDC)
-- IoT-Geräte allein: prognostiziert ~73 ZB in 2025 (IDC)
-- Prognose 2028: ~394 ZB (IDC)
--->
-
 ---
 
 <!-- _header: '' -->

slides/223015b/assets/grayscale-gradient.svg

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+<text x="1582.88" y="820" text-anchor="middle" font-family="monospace" font-size="42" fill="#1a1a2e" font-weight="bold">242</text>
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+<text x="1696.12" y="820" text-anchor="middle" font-family="monospace" font-size="42" fill="#1a1a2e" font-weight="bold">241</text>
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+<text x="960.0" y="1020" text-anchor="middle" font-family="sans-serif" font-size="28" fill="#4a4a6a" font-style="italic">jede Stufe = Unterschied von 1/255 ≈ 0,4% Helligkeit</text>
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