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Computer Science - J277
19 sections available · 31 chapters available
Free Computer Science - J277 study notes for Cambridge OCR GCSE (9-1) students. Each chapter below covers a key topic with worked examples and practice prompts you can take into the thinka app.
Systems architecture
1.1 Systems architecture
Architecture of the CPU
CPU performance
Embedded systems
Memory and storage
Computer networks, connections and protocols
1.2 Memory and storage
Primary storage (memory)
Secondary storage
Units
Data storage
Compression
Network security
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
Systems software
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
Ethical, legal, cultural and environmental impacts of digital technology
2.1 Algorithms
Computational thinking
Designing, creating and refining algorithms
Searching and sorting algorithms
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)
Programming fundamentals
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)
Producing robust programs
Boolean logic
Programming languages and Integrated Development Environments
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