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1.1 Systems Architecture - Coggle Diagram

- - - - Decodes and executes instructions
    - - Performs binary calculations and bit shifts
    - - Fast but small memory that stores frequently used instructions or data
  - - - Hold the memory address of the next instruction or data to be fetched
    - - Holds the data or program instructions temporarily when it is fetched from memory or is sent to main memory
    - - Results from the Arithmetic Logic Unit are temporarily held here before further processing.
    - - Holds the memory address of the next instruction to be processed
  - - - Fetch – An instruction is fetched from main memory
        
        Decode – The data is taken to the control unit to be decoded
        
        Execute – The command is executed