The main function of the controller is to exchange, detect, and provide signals.
1. Control the machine and ensure that all components work in harmony.
2. The controller has data exchange function, which refers to the implementation of data exchange between the CPU and the controller, as well as between the controller and the device.
3. Comparing the telephone to the human body, the controller is like the human brain, outputting various commands and allowing the components to operate flexibly.
4. The arithmetic unit can only perform calculations, while the controller is used to control the operation of the entire CPU.
5. Through the data bus, the CPU writes data in parallel to the controller or reads data in parallel from the controller.
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