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CPU & Memory_1 (Registers (General Purpose Registers (= calculator in…

- - - - Holds data needed
        quickly or frequently
    - - address of next
        program instruction
      - signals from
        external devices
- - - - Accesses program instructions
        & issues commands to the ALU
      - Moves data to & from CPU
        registers & other hardware
        components (no change in data)
      - = LM in LMC model
    - - Memory management unit:
        supervises fetching instructions
        & data from memory
      - I/O Interface:
        sometimes combined with
        memory management unit
        as Bus Interface Unit