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ZIMSEC A-Level Computer Science

3.6Fetch-decode-execute cycle and interrupts

Fetch-decode-execute cycle and interrupts in ZIMSEC A-Level Computer Science: what the syllabus expects you to know, the learning objectives and how to practise.
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Learning objectives

What the syllabus expects you to be able to do.

  1. 3.6.1Describe the fetch-decode-execute cycle.
  2. 3.6.2Identify the types of interrupt (internal, external and software) and justify why computers use interrupts.

Lessons

  • The fetch-execute cycle and interrupts

    50 min

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Sample question

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Fetch-decode-execute cycle and interrupts: sample question

1 mark

What happens to the program counter during the fetch stage?

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