From 90ec0d1c65d09a5dd8564474522e0fed3c2fbd53 Mon Sep 17 00:00:00 2001 From: Michael Czechowski Date: Wed, 24 Dec 2025 00:30:23 +0100 Subject: [PATCH] clarify TB vs TiB slide with decimal/binary explanation --- ...-20-termin-1-geschichte-grundlagen-html.md | 30 ++++++++++--------- 1 file changed, 16 insertions(+), 14 deletions(-) diff --git a/slides/2025-12-20-termin-1-geschichte-grundlagen-html.md b/slides/2025-12-20-termin-1-geschichte-grundlagen-html.md index 22110b2..d3e3b10 100644 --- a/slides/2025-12-20-termin-1-geschichte-grundlagen-html.md +++ b/slides/2025-12-20-termin-1-geschichte-grundlagen-html.md @@ -904,24 +904,26 @@ Warum? Marketing - 100 klingt besser als 12,5 # Warum zeigt meine 1TB-Festplatte nur 931GB? -**Hersteller:** 1 TB = 1.000.000.000.000 Bytes (10¹²) +**Zwei Zählweisen:** -**Betriebssystem:** 1 TB = 1.099.511.627.776 Bytes (2⁴⁰) +| Dezimal (Hersteller) | Binär (Computer) | +|---------------------|------------------| +| Kilo = 1.000 | Kibi = 1.024 (2¹⁰) | +| Mega = 1.000.000 | Mebi = 1.048.576 (2²⁰) | +| Giga = 1.000.000.000 | Gibi = 1.073.741.824 (2³⁰) | +| Tera = 1.000.000.000.000 | Tebi = 1.099.511.627.776 (2⁴⁰) | -| SI (Dezimal) | Binär (IEC) | Differenz | -|--------------|-------------|-----------| -| 1 KB = 1.000 | 1 KiB = 1.024 | 2,4% | -| 1 MB = 1.000.000 | 1 MiB = 1.048.576 | 4,9% | -| 1 GB = 10⁹ | 1 GiB = 2³⁰ | 7,4% | -| 1 TB = 10¹² | 1 TiB = 2⁴⁰ | **9,1%** | - -→ 1 TB ÷ 1.024⁴ = **931 GiB** +**Das Problem:** +- Hersteller verkauft: 1 TB = 1.000.000.000.000 Bytes +- Computer rechnet: 1 TiB = 1.099.511.627.776 Bytes +- Differenz: **9,1%** → zeigt nur **931 GB** ---