Central processing unit.

CPU fan: the "radiator" of the central processing unit (CPU)

MB: motherboard

RAM: random access memory with PC codes, such as PC- 133, PC- 1066 and PC-2700.

HDD: hard disk drive

floppy disk drive

CD-ROM: ROM of CD-ROM drive.

Dvd-rom: DVD drive digital multifunctional CD-ROM.

CD-RW: optical disc rewriter

VGA: Graphics card (the official language of graphics card should be Display Card).

AUD: Sound Card (the official term of sound card should be soundcard)

LAN: Network card (the formal term of network card should be network card)

Extended data

A computer operating system should generally include the following five functional modules:

(1) Processor management: When multiple programs are running at the same time, the CPU time allocation problem is solved.

(2) Job management: the program that completes an independent task and the data it needs constitute a job. The task of job management is mainly to provide users with an interface to run their jobs conveniently by using computers, and to schedule and control all jobs that enter the system, so as to use the resources of the whole system as efficiently as possible.

(3) Memory management: allocate memory space for each program and the data it uses, and ensure that they do not interfere with each other.

(4) Equipment management: allocate equipment according to users' requests to use equipment, and receive equipment requests (called interrupts) at any time, such as information input.

(5) File management: mainly responsible for the storage, retrieval, enjoyment and protection of files, and providing users with the convenience of file operation.