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Bits, Bytes & Units of Information

AQA 75174.5.3A-levelLesson packSubscription
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Set it as homework or classwork and every answer is marked as pupils go, with feedback on what they got wrong. The scores go straight into your mark book, so you can see who needs help before the next lesson.

  • 11 questions
  • 33 marks
  • about 40 minutes
  • marked instantly

Question types: multiple choice, fill the gap, short answer, calculation, matching.

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About this resource

AQA A-level Computer Science (7517) Paper 2, 4.5.3 — the bit as the fundamental unit of information, 2n patterns from n bits, and calculating storage quantities using binary prefixes (Ki, Mi, Gi, Ti) and decimal prefixes (k, M, G, T).

19 slides.

Lesson outline

  1. Do Now — Retrieval
  2. Quick Check — Hex Shorthand
  3. The Bit — the Fundamental Unit
  4. How Many Patterns? — 2ⁿ
  5. Hinge Check — Doubling, Not Adding
  6. Practise — 2ⁿ Values
  7. Byte = 8 Bits — Why 8?
  8. Binary Prefixes vs Decimal Prefixes
  9. The Full Set of Prefixes
  10. Why Does the Difference Matter?
  11. Hinge Check — GB vs GiB
  12. Match Prefix, Symbol and Power
Unit bundlePaper 2
Part of: Paper 2: the whole unitEvery resource in the unit in one zip.

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