OCR GCSE Computer Science (J277)

The pages in this section replicate the H446 specification for convenience of linking to parts of the specification from other pages.

• Specification PDF

Specification content map

J277-01 Computer systems

• 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 (memory)
  • 1.2.2 Secondary storage
  • 1.2.3 Units
  • 1.2.4 Data storage
  • 1.2.5 Compression
• 1.3 Computer networks, connections, and protocols
  • 1.3.1 Networks and topologies
  • 1.3.2 Wired and wireless networks, protocols, and layers
• 1.4 Network security
  • 1.4.1 Threats to computer systems, and networks
  • 1.4.2 Identifying and preventing vulnerabilities
• 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 Ethical, legal, cultural, and environmental impact

J277-02 Computational thinking, algorithms, and programming

• 2.1 Algorithms
  • 2.1.1 Computational thinking
  • 2.1.2 Designing, creating and refining algorithms
  • 2.1.3 Searching and sorting algorithms
• 2.2 Programming fundamentals
  • 2.2.1 Programming fundamentals
  • 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 Integrated Development Environments
  • 2.5.1 Languages
  • 2.5.2 The Integrated development Environment (IDE)