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CS with ZAKFIRST EDITION§1.1B§1.2C§1.3C§2.1B§2.2C§2.3O§3.1B§3.2C§3.3B§3.4O§4.1C§4.2C§5.1B§5.2O§5.3B§6.1R§6.2R§6.3CO Level · IGCSE · Book 1 · Paper 1Computer SystemsFor Cambridge O Level 2210 and IGCSE 0478 Computer Science · 2026–2028 syllabusZafar Ali Khan “ZAK”Every block is a syllabus section, sized by the marks it earns on the real papers · O R C B = Occasional · Regular · Core · Banker

The cover is this book's Exam Heat — data as of 2026-10-10.

In preparationO Level / IGCSE · 2210 · 0478 Paper 1

Book 1 · O Level / IGCSE Paper 1

Computer Systems

All of Paper 1 — binary to blockchain, CPUs to cyber security — explained simply, with every worked answer checked by the site's own engines.

Chapters
6
Sections
§1–6
Ready to read
0 of 6
Short code
B5

For the 2026–2028 syllabus — Cambridge O Level 2210 and IGCSE 0478.

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Printed in colour, 19 × 24.6 cm

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Contents

Bars show the marks a Paper 1 usually gives each chapter (Statometer). Chapter 1 is free to read as soon as it is published.

  1. 1
    Data representation

    §1.1 · §1.2 · §1.3

    Banker · ≈ 20.7 m · ↗Free
  2. 2
    Data transmission

    §2.1 · §2.2 · §2.3

    Banker · ≈ 15.3 m · ↗ Writing
  3. 3
    Hardware

    §3.1 · §3.2 · §3.3 · §3.4

    Banker · ≈ 23.3 m · → Writing
  4. 4
    Software

    §4.1 · §4.2

    Core · ≈ 11.8 m · ↗ Writing
  5. 5
    The internet and its uses

    §5.1 · §5.2 · §5.3

    Banker · ≈ 14.9 m · → Writing
  6. 6
    Automated and emerging technologies

    §6.1 · §6.2 · §6.3

    Core · ≈ 11.1 m · → Writing
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