Central processing unit (CPU), as the computing and control core of the computer system, is the final execution unit for information processing and program execution. . Since its creation, CPU has made great progress in logical structure, operating efficiency and function extension.(Recommended study:phpstorm)
The Central Processing Unit (CPU) is one of the main devices of an electronic computer and a core accessory in the computer. Its function is mainly to interpret computer instructions and process data in computer software. The CPU is the core component of the computer that reads instructions, decodes them, and executes them.
The central processing unit mainly consists of two parts, namely the controller and the arithmetic unit, which also include cache memory and the data and control bus that realize the connection between them.
The three core components of an electronic computer are the CPU, internal memory, and input/output devices. The main functions of the central processing unit are to process instructions, perform operations, control time, and process data.
In computer architecture, the CPU is the core hardware unit that controls and allocates all hardware resources of the computer (such as memory, input and output units) and performs general operations. The CPU is the computing and control core of the computer. The operations of all software layers in the computer system will eventually be mapped to CPU operations through the instruction set.
CPU appeared in the era of large-scale integrated circuits. The iterative updates of processor architecture design and the continuous improvement of integrated circuit technology have prompted its continuous development and improvement.
From initially dedicated to mathematical calculations to widely used in general computing, from 4-bit to 8-bit, 16-bit, 32-bit processors, and finally to 64-bit processors, from the incompatibility of various manufacturers to different instructions With the emergence of set architecture specifications, CPUs have been developing rapidly since their birth.
In order to meet the upper-layer work requirements of the operating system, modern processors have further introduced functions such as parallelization, multi-core, virtualization and remote management systems, which continue to promote the development of upper-layer information systems.
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