Systems ArchitectureDiagram

CPU Architecture Diagram

Part of CPU ArchitectureGCSE Computer Science

This diagram covers CPU Architecture Diagram 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 6 of 7 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.

Topic position

Section 6 of 7

Practice

15 questions

Recall

12 flashcards

CPU Architecture Diagram

CPU Control Unit Fetches & Decodes Instructions ALU Arithmetic & Logic Operations PC Program MAR Address MDR Data ACC Results Registers (Fast Temporary Storage) RAM Main Memory (Instructions & Data) Address Bus (WHERE → one-way) Data Bus (WHAT ↔ two-way) Control Bus (HOW ↔ two-way)
Address Bus (one-way to memory)   Data Bus (two-way)   Control Bus (two-way)

Keep building this topic

Read this section alongside the surrounding pages in CPU Architecture. That gives you the full topic sequence instead of a single isolated revision point.

Practice Questions for CPU Architecture

Which component of the CPU carries out arithmetic and logical operations?

  • A. Control Unit
  • B. Cache
  • C. Arithmetic Logic Unit (ALU)
  • D. Program Counter
1 markfoundation

Name three main components of the CPU and state the purpose of each.

3 marksstandard

Quick Recall Flashcards

What does ALU stand for?
Arithmetic Logic Unit
What does CPU stand for?
Central Processing Unit

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