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1.1 Systems architecture - Coggle Diagram

- - - - Brings it back into the CPU
      - Fetches the next instruction from main memory (RAM)
    - - Inspects the instruction and works out what it is that needs doing
    - - Carry out the instruction
      - example: going back to main memory and grabbing some data
      - example: performing a calculation
      - example: storing information back into main memory
    - - Clock speed
        
        Measured in Hertz (hz) usually Ghz
        
        on modern day CPUs this fetch-execute cycle occurs billions of times per second