This exam tips covers Exam Tips - The CPU within CPU Architecture for GCSE Computer Science. Revise CPU Architecture in Systems Architecture for GCSE Computer Science with 15 exam-style questions and 12 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 7 of 7 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
Topic position
Section 7 of 7
Practice
15 questions
Recall
12 flashcards
Exam Tips - The CPU
When asked "Describe the CPU" always mention ALL THREE parts:
- Control Unit - fetches, decodes, sends control signals
- ALU - arithmetic AND logic operations
- Registers - fast temporary storage inside CPU
Common mistakes to avoid:
- Saying "ALU does calculations" - say "arithmetic AND logic operations"
- Forgetting the Control Unit sends control signals
- Confusing buses - Address is WHERE, Data is WHAT
- Saying registers store data "permanently" - they're TEMPORARY