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SYSTEM ARCHITECTURE
- The central processing unit
- Components of the CPU
- Fetch–decode–execute cycle
- Performance of the CPU
- Embedded systems MEMORY
- RAM and ROM
- Virtual memory
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Virtual memory
- Secondary storage 1: optical and magnetic devices
- Secondary storage 2: solid-state memory
- Storage 3: capacity, speed and cost
- Storage 4: portability, durability and reliability
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WIRED AND WIRELESS NETWORKS
- Networks 1: LANs and WANs
- Networks 2: client–server and peer-to-peer
- Transmission media
- Connecting computers to a LAN
- The internet
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NETWORK TOPOLOGIES, PROTOCOLS AND LAYERS
- Network topologies
- Protocols 1: browsers and email clients
- Protocols 2: network layers
- Protocols 3: benefits of layers
- Packets and packet switching
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SYSTEM SECURITY
- Threats to networks 1: people as the weak point
- Threats to networks 2: malware
- Threats to networks 3: network security
- Identifying and preventing vulnerabilities
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SYSTEMS SOFTWARE
- Operating systems
- Utility system software
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ISSUES
- Ethical and legal issues
- Cultural issues
- Environmental issues
- Privacy issues
- Legislation
- Proprietary and open-source software
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ALGORITHMS
- Computational thinking
- Algorithms – pseudocode
- Algorithms – flow diagrams
- Standard searching algorithms – linear search
- Standard searching algorithms – binary search
- Comparing linear and binary searches
- Standard sorting algorithms – bubble sort
- Standard sorting algorithms – insertion sort
- Standard sorting algorithms – merge sort
- Interpreting, correcting and completing algorithms
- Using trace tables
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PROGRAMMING TECHNIQUES
- Variables and constants
- Arithmetic operators
- Comparison operators
- Boolean operators
- Selection
- Iteration
- Data types
- String manipulation
- Arrays
- File handling operations
- Records
- Structured query language
- Sub-programs
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PRODUCING ROBUST PROGRAMS
- Defensive design
- Testing and maintainability
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COMPUTATIONAL LOGIC
- Computational logic 1
- Computational logic 2
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TRANSLATORS AND FACILITIES OF LANGUAGES
- Programming languages
- Translators
- Integrated development environment
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DATA REPRESENTATION
- Data representation
- Converting from denary to binary
- Converting from binary to denary and binary addition
- Binary shifts
- Hexadecimal and denary
- Hexadecimal and binary
- Check digits
- Characters
- Images
- Sound
- Compression
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