Function: It can perform numerical calculations, logical calculations, and has storage and memory functions. It is a modern intelligent electronic device that can run according to the program and process massive data automatically and at high speed. The application fields of computers are broad, mainly including:
1. Information management. It includes a series of tasks such as data collection, storage, processing, classification, sorting, retrieval and release. Information management has been widely used in office automation, computer-aided management and decision-making in enterprises and institutions, information retrieval, libraries, film and television animation design, accounting computerization and other industries.
2. Process control. Use computers to collect data in real time, analyze data, and quickly automatically adjust or automatically control control objects according to optimal values. Computer process control has been widely used in machinery, metallurgy, petroleum, chemical industry, electric power and other departments.
3. Assistive technology. Including CAD, CAM and CAI.
4. Computer network. It is a system composed of a number of independent computers interconnected with information exchange capabilities to achieve maximum sharing of resources. Such as the use of bank credit cards nationwide, the use of train and airplane ticket systems, etc. You can browse, retrieve information, send and receive emails, purchase goods, and implement remote medical services on the Internet, the world's largest Internet network.
Extended information:
A complete computer system includes two parts, namely the hardware system and the software system.
1. The power supply is an indispensable power supply device in the computer. Its function is to convert 220V AC into the DC power used in the computer. Its performance directly affects the stability of other equipment, which in turn will Affect the stability of the whole machine.
2. The motherboard closely connects the various components of the computer, and each component transmits data through the motherboard. In other words, the important "transportation hubs" in the computer are all on the motherboard, and its working stability affects the stability of the entire machine.
3. The CPU function is mainly to interpret computer instructions and process data in computer software. The CPU is composed of arithmetic units, controllers, registers, caches, and buses that implement data, control, and status between them.
4. The memory is composed of circuit boards and chips. It is characterized by small size, fast speed, and can be stored when there is electricity and cleared when there is no electricity. That is, data can be stored in the memory when the computer is turned on, and will be automatically restored when turned off. Erase all data in it.
5. The hard disk is an external memory and is made of metal magnetic sheets. The magnetic sheets have a recording function, so the data stored on the magnetic sheets will not be lost whether the computer is turned on or off. The hard disk capacity is very large, reaching TB level.