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GCSE Computer Science

Section 4: Revision guides

Computer systems

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Computer systems revision guide

Comprehensive revision materials for the computer systems topics.

This guide brings together all the key concepts from systems architecture, memory and storage, computer networks, network security, systems software, and ethical/legal issues.

Use this resource to review topics, test your understanding, and prepare for your exams with focused revision activities and practice questions.

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Computer programs

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Copyright © 2025 Ed Nutting. Based on OCR GCSE Computer Science specification.

Created with care for students aged 10+