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Brainlag

GCSE Computer Science revision

Every topic in the course and where it sits in each board's specification. Choose your board for its own topic list, official links and summer 2027 exam dates.

Choose your exam board

AQA 8525Edexcel 1CP2OCR J277

Also mapped

Eduqas GCSE Computer Science (C500)Cambridge IGCSE Computer Science (0478)National 5 Computing Science (C816 75)

Topics

  1. Algorithms

    Searching algorithms: linear and binary searchAlgorithms: lessons and questions

  2. Programming in exam style

    Data types, variables and operatorsSequence, selection and iterationProgramming in exam style: lessons and questions

  3. Databases and SQL

    Databases and SQL queriesDatabases and SQL: lessons and questions

  4. Data representation

    Binary, denary and hexadecimalData representation: lessons and questions

  5. Computer systems

    The CPU and the fetch-execute cycleComputer systems: lessons and questions
5 topics

  1. Networks and protocols

    Networks, hardware and topologiesNetworks and protocols: lessons and questions

  2. Cyber security

    Cyber security: malware, social engineering and attacksCyber security: lessons and questions

  3. Boolean logic

    Logic gates and truth tablesBoolean logic: lessons and questions

  4. Languages and translators

    High and low-level languages, compilers and interpretersLanguages and translators: lessons and questions

  5. Ethical, legal and environmental impacts

    Ethical, legal and environmental impacts of computingEthical, legal and environmental impacts: lessons and questions

Specification references

TopicAQAEdexcelOCR
Algorithms 3.1.1 to 3.1.4Topic 12.1.1 to 2.1.3
Programming in exam style 3.2.1 to 3.2.11, 3.7.1Topic 6 (and Topic 1 for trace tables)2.2.1 to 2.2.3, 2.3.1, 2.3.2
Databases and SQL 3.7.1 and 3.7.21.2.2 and 6.3.1 (records), 6.4.2 (CSV text files)2.2.3 (records, SQL, 2D arrays as tables, file handling)
Data representation 3.3.1 to 3.3.8Topic 21.2.3 and 1.2.4 (units, numbers, characters, images, sound, compression)
Computer systems 3.4.1, 3.4.3 and 3.4.5Topic 31.1.1 to 1.1.3, 1.2.1, 1.2.2, 1.5.1 and 1.5.2
Networks and protocols 3.5Topic 41.3.1 and 1.3.2
Cyber security 3.6Topic 5 (cyber security) and Topic 2 (encryption)1.4.1 and 1.4.2
Boolean logic 3.4.2Topic 3 (logic)2.4.1
Languages and translators 3.4.4Topic 3 (programming languages and translators)2.5.1 and 2.5.2
Ethical, legal and environmental impacts 3.8Topic 5 (including 5.2.2 and 5.2.3)1.6.1

Brainlag is not affiliated with or endorsed by any exam board. Specification codes and references are only here to help you find your topics.