CS04-04 Computer Science Watch
The fetch-execute cycle
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In this lesson
In this video you'll learn about the fetch-execute cycle for GCSE Computer Science, with worked examples and the mistakes examiners report. By the end you'll be able to explain what happens at each stage of the fetch-execute cycle - fetch, decode, execute - say why it is a cycle rather than a list, use the name your own board uses, and describe the part main memory plays in it without describing the whole cycle when only that part was asked for.
What it covers
- 2:33 The fetch-execute cycle: the loop itself is the easy half
- 4:54 A question that is purely about main memory, the trips from the start of this video
Key words
For: AQA GCSE 8525, Edexcel GCSE 1CP2, OCR GCSE J277
On the specification
| Board | Spec | Statement |
|---|---|---|
| AQA GCSE 8525 | 3.4.5 | Systems architecture |
| Edexcel GCSE 1CP2 | 3.1.1 | Hardware |
| OCR GCSE J277 | 1.1.1 | Architecture of the CPU |
For teachers
This GCSE Computer Science lesson teaches the fetch-execute cycle. By the end, students should be able to explain what happens at each stage of the fetch-execute cycle - fetch, decode, execute - say why it is a cycle rather than a list, use the name your own board uses, and describe the part main memory plays in it without describing the whole cycle when only that part was asked for. It works through four worked examples and the mistakes examiners report.