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A1.1 Computer hardware and operationA1.1.4

Types of primary memory

Explain the purposes of different types of primary memory

SL + HL≈ 40 minCommand term: ExplainPremium

In this lesson

  • The purpose of RAM, ROM, cache (L1, L2, L3) and registers
  • How the CPU uses the different types of memory together to improve performance
  • What a cache hit and a cache miss are, and why they matter

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What's inside

  1. LearnFour kinds of primary memory
  2. LearnThe memory hierarchy
  3. CheckVolatile or non-volatile?
  4. LabCache hits and misses
  5. CheckQuick check
  6. LearnHow the CPU uses memory to go faster
  7. CodeAverage access time
  8. ExamWorked exam answer
  9. ReviewMistakes examiners see
  10. Exam practiceExam-style questions

Ends with 5 exam-style questions worth 12 marks, with a self-marking markscheme.