Mind map

System Architecture

Anson Au Yeung Computing GCSE English

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System Architecture

Arithmetic-Logic Unit (ALU)
- Carries out arithemtic operations and logical operations
  - AND
  - OR
  - NOT
CPU Registers
- Program counter
  - points to the next instruction
- Memory Address Register
  - stores the address of the instruction to be executed
- Memory Data Register
  - stores the data to be sent/received from memory
- Accumulater
  - temporarily stores arithenetic results
Secondary Storage
- Magnetic
  - Advantages
    - Cheap
    - Large storage capacities
  - Disadvantages
    - Durability issue
    - Not portable
- Solid State
  - Advantages
    - High durable
    - Very fast writing/reading speed
  - Disadvantages
    - More expensive
- Optical
  - Advantages
    - Portable
    - Cheap
  - Disadvantage
    - Slow writing speed
    - Easily damaged/ scratched

Description: GCSE Computing Mind Map on System Architecture, created by Anson Au Yeung on 27/09/2023.
Created by: Anson Au Yeung
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