Chapter 1: Components of a Computer: Processor Components

A-level Computer ScienceOCR6 topicsHigher

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Releases 1 August 2026

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Systems Architecture Long-Answer Questions

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6 marksdescribestandardOCR A

CS01-1 processor organisation: describe how the fetch-decode-execute cycle with registers operates in a school server running many short interactive tasks, using precise OCR H446 terminology.

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CS01-2 applied case: explain why the fetch-decode-execute cycle with registers would affect a school server running many short interactive tasks, including one limitation or trade-off.

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CS01-3 task for processor organisation: write a response using the fetch-decode-execute cycle with registers in a school server running many short interactive tasks; produce a correct register-level sequence.

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6 marksevaluatesynopticOCR A

CS01-4 synoptic judgement: evaluate the suitability of the fetch-decode-execute cycle with registers for a school server running many short interactive tasks, comparing it with one credible alternative.

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Start of OCR

2. Components of a Computer: Processor Performance

Key learning objectives

Understand the key principles behind Components of a Computer: Processor Components.
Apply these ideas to exam-style questions.
Recall the essential definitions and key terms.