OCR J277 ComputerScience Unit 1 Revision

This is a complete OCR J277 Computer Science Unit 1 revision booklet designed to support structured, long-term revision across the full specification.

The booklet is organised into a clear weekly format, covering approximately 30 weeks of revision. Each week focuses on a specific Unit 1 topic and includes revision content, retrieval practice, application tasks, and exam-style questions.

Every topic follows the same consistent structure to support knowledge retention and exam preparation:

Revision content explained clearly and accessibly

Retrieval questions using multiple choice and short-answer formats

An application task to apply understanding

An exam-style question with mark guidance

Topics covered include:

System architecture and CPU components

Memory (RAM, ROM, cache) and virtual memory

Secondary storage and storage technologies

Storage sizes and capacity calculations

Binary and hexadecimal (conversions, addition, shifts)

Character representation (ASCII and Unicode)

Image representation, sound, and compression

Operating systems and utility software

Computational thinking (abstraction, decomposition, algorithms)

Networks, hardware, topologies, threats, and security

The booklet is ideal for:

GCSE Computer Science (OCR J277)

Year 10 or Year 11 revision

Homework, independent study, or catch-up

Structured revision over time

Exam preparation and consolidation

This resource works well as a standalone revision guide or alongside classroom teaching and lessons.

File type included:
PDF revision booklet