2. Power supply: Computer power supply is a device that converts 220 V alternating current into direct current, which is specially used to supply power for CPU, motherboard, hard disk, memory stick, graphics card, CD-ROM drive and other computer accessories. It is the hub of power supply for all parts of the computer and an important part of the computer. At present, most computer power supplies are switching power supplies.
3. Central Processing Unit (CPU): It is a very large-scale integrated circuit, which is the computing core and control core of a computer. Its function is mainly to interpret computer instructions and process data in computer software.
4. Monitor: I/O equipment belonging to the computer, that is, I/O equipment. It is a display tool, which displays some electronic files on the screen through a specific transmission device and then reflects them to human eyes. According to the different manufacturing materials, it can be divided into: cathode ray tube display (CRT), plasma display PDP, liquid crystal display LCD and so on.
5. Memory stick: Memory stick is a computer component, which can be addressed by CPU through bus and read and write. In the history of personal computers, memory chips used to be extensions of main memory. With the continuous updating of computer software and hardware technology, memory chips have become the whole of read-write memory.
6. Radiator: The function of radiator is to absorb heat and then radiate it to the inside or outside of the chassis to ensure the normal temperature of computer components. The radiator absorbs heat mostly by contacting with the surface of the heating component, and then transfers the heat to a far place, such as the air in the chassis, and then the chassis transfers the hot air to the outside of the chassis to complete the heat dissipation of the computer.