The main functions of arithmetic unit are arithmetic operation and logical operation.
The controller is the part that controls the whole computer. It sends control signals to other parts of the computer to make them work in coordination.
The main function of memory is to store programs and data. ?
Input devices and output devices are used to input and output information. An input device is a device that converts programs, data and instructions into code information that a computer can receive.
Output devices are devices that represent the intermediate and final results of computer processing in the form of characters, tables, graphics and images that people can usually recognize.
Extended data
Computer, commonly known as computer, is a modern electronic computer used for high-speed calculation, which can not only perform numerical calculation, but also logical calculation, and also has the functions of storage and memory. It is a modern intelligent electronic device that can run according to the program and automatically process massive data at high speed.
It consists of hardware system and software system, and a computer without any software is called bare metal. It can be divided into five categories: supercomputer, industrial control computer, network computer, personal computer and embedded computer. More advanced computers include biological computers, photonic computers and quantum computers.
John von neumann, the inventor of the computer. Computer is one of the most advanced scientific and technological inventions in the 20th century, which has had an extremely important impact on human production and social activities, and has developed rapidly with strong vitality. Its application field has expanded from the initial military scientific research application to all fields of society, forming a huge computer industry, promoting global technological progress and triggering profound social changes. Computers have spread all over ordinary schools, enterprises and institutions, entered the homes of ordinary people and become an indispensable tool in the information society.