1, the operator:
① The arithmetic logic unit ALU: arithmetic and logical data operation
② accumulator register AC: general purpose registers, ALU to provide a work area for use in temporary data
③ Data Buffer Register DR: write memory for temporarily storing instructions or data
The PSW register status condition ④: memory status flags and control flags (controversial: there be classified as controller)
2, the controller:
① program counter PC: To perform a memory address of the next instruction
② instruction register IR: storing instructions to be executed
③ instruction decoder ID: the operation code field of the instruction interpretation analysis
④ timing member: providing a timing control signal