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1·Control unit (controller) : control unit is composed of program arithmometer, instruction register and operation controller, ect.

控制器：控制器是由程序计数器、指令存放器跟操作控制器等组成。

计数器

1·Control unit (controller) : control unit is composed of program arithmometer, instruction register and operation controller, ect.

控制器：控制器是由程序计数器、指令存放器跟操作控制器等组成。