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U1: Computer Hardware - Coggle Diagram

- - - - Arithmetic and Logic Unit (ALU)
      - Registers
      - Control Unit
    - - Fetch
      - Decode
      - Execute
    - - Heat sink
  - - - Characteristics
        
        Non volatile
        
        Read only
      - Holds the BIOS, which provides the computer with boot up instructions
    - - Characteristics
        
        Volatile
        
        Read/write
      - Holds the Operating System, program instructions and data currently used by the CPU
      - Virtual memory
        
        When the RAM is full, the operating system will ‘swap out’ some of the data to a file on the
        hard disk drive. This is referred to as ‘virtual memory’.
      - Adding RAM
        
        Reduces the use of virtual memory (swapping)
        
        Improves the multitasking capabilities