CPU chip is the core of microcomputer hardware system, also known as microprocessor chip, including controller, arithmetic and register group.
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1, controller: refers to the main device that changes the wiring of the main circuit or control circuit and changes the resistance value in the circuit to control the start, speed regulation, braking and reverse of the motor in accordance with the predetermined order. Composed of program counter, instruction register, instruction decoder, timing generator and operation controller, it is a \"decision mechanism\" that issues commands, that is, to complete the coordination and command of the operation of the entire computer system.
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(2) Arithmetic device: a component that performs various arithmetic and logical operations in a computer. The basic operations of the arithmetic machine include addition, subtraction, multiplication, division of four operations, and, or, not, xOR and other logical operations, as well as shifting, comparing and transmitting operations, also known as arithmetic logic components.
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3, register group: central processor components. Registers are high-speed memory components with limited memory capacity. They can be used to temporarily store instructions, data, and addresses. In the control unit of the central processor, the included registers are the instruction register and the program counter.
Commonly referred to as the CPU chip includes the controller, arithmetic and register group.
Central processing unit (CPU), is one of the main equipment of electronic computers, the core accessories in computers. Its main function is to interpret computer instructions and process data in computer software. CPU is the core part of the computer that is responsible for reading instructions, decoding instructions and executing instructions. The central processing unit mainly includes two parts, that is, the controller, the arithmetic device, which also includes the cache memory and the data and control bus that realize the connection between them. The three core components of an electronic computer are CPU, internal memory, and input\/output devices. The main functions of the central processor are to process instructions, perform operations, control time, and process data.
In the computer architecture, CPU is the core hardware unit that controls and allocates all hardware resources (such as memory, input and output units) of the computer and performs general operations. CPU is the computing and control core of a computer. The operations of all software layers in a computer system are ultimately mapped to the operations of the CPU through the instruction set.