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Computer Science - J277
8 sections available · 31 chapters available
Free Computer Science - J277 study notes for Cambridge OCR GCSE (9-1) students. Each chapter breaks down a key concept with examples and practice prompts you can turn into AI drills in the thinka app.
1.1 Systems architecture
Architecture of the CPU
CPU performance
Embedded systems
1.2 Memory and storage
Primary storage (memory)
Secondary storage
Units
Data storage
Compression
1.3-1.4 Networks, connections, protocols and network security
Networks and topologies
Wired and wireless networks, protocols and layers
Threats to computer systems and networks
Identifying and preventing vulnerabilities
1.5-1.6 Systems software and impacts of digital technology
Operating systems
Utility software
Ethical, legal, cultural and environmental impact
Legislation and software licences
2.1 Algorithms
Computational thinking
Designing, creating and refining algorithms
Searching and sorting algorithms
2.2 Programming fundamentals
Programming fundamentals
Data types
Additional programming techniques
2.3-2.5 Robust programs, Boolean logic, languages and IDEs
Defensive design
Testing
Boolean logic
Languages
The Integrated Development Environment (IDE)
OCR Exam Reference Language
Reading and tracing Exam Reference Language code
Writing and refining programs in Exam Reference Language
Strings, arrays, files and sub programs in Exam Reference Language
SQL commands (SELECT, FROM, WHERE)
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