OCR J277 Visual Revision Guide – Paper 1

A complete 60-page visual revision guide covering OCR GCSE Computer Science J277 v3.1 Paper 1: Computer Systems. Ideal for revision and SEND support.

This accessible A4 revision booklet presents each topic through clear diagrams, large icons, colour-coded sections, short explanations and memorable examples. It is designed to reduce cognitive overload and help students revise independently without facing dense pages of text.

Topics covered
CPU architecture, components and performance
Embedded systems
RAM, ROM, cache and virtual memory
Secondary storage and storage characteristics
Data units and binary representation
Binary, denary and hexadecimal conversion
Binary addition, overflow and binary shifts
Character sets, images and digital sound
File-size calculations and compression
LANs, WANs and network performance
Client-server and peer-to-peer networks
Network hardware and topologies
The Internet, DNS and cloud computing
Wired and wireless connections
Encryption, IP addresses and MAC addresses
Standards, protocols and protocol layers
Malware and network threats
Security prevention methods
Operating systems and utility software
Ethical, legal, cultural and environmental impacts
Data Protection Act 2018
Computer Misuse Act 1990
Copyright, Designs and Patents Act 1988
Open-source and proprietary software licences
Final comparison and consolidation pages
GCSE exam command words
Designed for
Year 10 and Year 11 students
Independent revision and homework
GCSE intervention sessions
Classroom recap activities
Cover lessons
SEND and lower-literacy learners
Revision booklets and classroom displays
Resource features
60 full-colour A4 portrait pages
Minimal text and strong visual explanations
Worked examples and process diagrams
Comparison pages for commonly confused topics
Retrieval questions and memory strips
Specification-focused terminology
Suitable for printing or digital use

Pages can be used individually as topic knowledge organisers or printed together as a complete Paper 1 revision booklet.