What is the function of computer CPU?

Central processing unit (CPU) is a very large scale integrated circuit, which is the computing core and control unit of a computer.

Its function is mainly to interpret computer instructions and process data in computer software, as follows: processing instructions, executing operations, controlling time and processing data. The programmability of computer mainly refers to the programming of central processing unit. Before 1970, the CPU was composed of several independent units, and later it developed a CPU made of integrated circuits. These highly compressed components are called microprocessors, and the most complex circuit of the central processing unit can be made into a tiny and powerful unit.

The central processing unit mainly includes arithmetic logic unit (ALU), controller, cache and data, control and status buses to realize the connection between them. Together with memory and input/output (I/O) devices, it is called the three core components of electronic computer.

Extended data:

Physical components of CPU:

1, logic element

English logic elements; ; Arithmetic logic unit. You can perform fixed-point or floating-point arithmetic operations, shift operations and logical operations, as well as address operations and conversions.

Step 2 register

The register part includes registers, special registers and control registers. General registers can be divided into fixed-point and floating-point numbers, which are used to store register operands and intermediate (or final) operation results temporarily stored during instruction execution. General register is one of the important parts of central processing unit.

3. Control components

English: control unit; ; The control unit is mainly responsible for decoding instructions and sending control signals for each operation to be performed by each instruction.

Baidu encyclopedia -CPU