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AQA GCSE Computer Science tutoring video lessons
Unit 4 - Computer Systems
Topic 1
Architecture of the CPU
Topic 2
Processor Performance
Topic 3
Memory
Topic 4
Secondary storage
Unit 3 - Data representation
Units and binary
Hexadecimal
Binary addition and shifts
Character sets
Images
Sound
Compression
Unit 5 - Networks
Networks
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GCSE Computer Science AQA Paper 1 lessons
Click here - for programming lessons
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