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OCR GCSE J277

OCR (Cambridge OCR) GCSE (9-1) Computer Science (J277) revision

10 free interactive Computer Science revision modules for OCR GCSE, matched to the OCR (Cambridge OCR) GCSE (9-1) Computer Science (J277) specification.

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📚 11 topics 🎮 10 modules · free

Revision modules

Big Debates Impacts of digital technology on wider society ⏱️ 22 min Computational Thinking Computational thinking ⏱️ 18 min Control Flow Lab Core constructs and operators ⏱️ 20 min Inside the CPU Architecture of the CPU ⏱️ 16 min Know the Law Impacts of digital technology on wider society ⏱️ 20 min MOD and DIV Gym Core constructs and operators ⏱️ 20 min RAM vs ROM Primary storage ⏱️ 12 min System Sorter Operating systems ⏱️ 14 min Threat Spotter Threats ⏱️ 16 min Topology Tour Networks and topologies ⏱️ 16 min

Past papers for this specification

OCR GCSE Computer Science past papers 24 official documents · 2022-2025

Question papers, mark schemes and examiner reports, free and straight from the exam board. Revise a topic here first, then mark yourself against a real paper.

Open the past papers All Computer Science past papers

What the specification covers

1.1 Systems architecture
  • 1.1.1 Architecture of the CPU
  • 1.1.2 CPU performance
  • 1.1.3 Embedded systems
1.2 Memory and storage
  • 1.2.1 Primary storage
  • 1.2.2 Secondary storage
  • 1.2.3 Units
  • 1.2.4 Data storage (binary/hex, binary arithmetic, characters, images, sound — one bundled sub-topic)
  • 1.2.5 Compression
1.3 Computer networks, connections and protocols
  • 1.3.1 Networks and topologies
  • 1.3.2 Wired/wireless, protocols and layers
1.4 Network security
  • 1.4.1 Threats
  • 1.4.2 Prevention
1.5 Systems software
  • 1.5.1 Operating systems
  • 1.5.2 Utility software
1.6 Ethical, legal, cultural and environmental impacts of digital technology
  • 1.6.1 Impacts of digital technology on wider society
2.1 Algorithms
  • 2.1.1 Computational thinking
  • 2.1.2 Designing, creating and refining algorithms
  • 2.1.3 Searching and sorting
2.2 Programming fundamentals
  • 2.2.1 Core constructs and operators
  • 2.2.2 Data types
  • 2.2.3 Additional programming techniques
2.3 Producing robust programs
  • 2.3.1 Defensive design
  • 2.3.2 Testing
2.4 Boolean logic
  • 2.4.1 Boolean logic
2.5 Programming languages and IDEs
  • 2.5.1 Languages
  • 2.5.2 IDE tools

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