What parts does a computer network consist of?

A complete multimedia computer system consists of multimedia computer hardware and multimedia computer software.

First of all, the hardware of multimedia computer

The main hardware of multimedia computer includes audio information processing hardware, video information processing hardware and CD-ROM besides the conventional hardware such as host, floppy drive, hard disk, monitor and network card.

(1) sound card is used to process audio information. It can carry out analog-to-digital conversion (A/D) and compression on the sound information input by microphones, tape recorders and electronic musical instruments. It can also restore (decompress) and D/A the digitized sound signal processed by the computer, and then play it out with a loudspeaker or record it with a recording device.

(2) The graphics card is used to support the input and output of video signals (such as TV).

(3) The acquisition card can convert TV signals into computer digital signals, which is convenient for editing, processing and color control of the converted digital signals with software. The processed digital signal can also be output to the video tape.

(4) The scanner scans the words, images and even objects on photographic works, paintings or other printed matter into the computer for processing.

(5) Optical drives are divided into read-only optical drives (CD-ROM) and read-write optical drives (CD-R, CD-RW), also known as burners. Which is used for reading or storing large-capacity multimedia information.

Second, the software of multimedia computer

The operating system of multimedia computer must expand the functions of multimedia resource management and information processing on the original basis.

Multimedia editing tools include word processing software, drawing software, image processing software, animation software, audio editing software and video editing software.

The authoring tools of multimedia application software are used to help application developers improve their development efficiency. They are generally application generators, which organize various media materials in the form of hypertext nodes and chain structures to form multimedia application systems. Authorware, Director and multimedia reference books are all well-known multimedia creation tools.

(1) Hardware composition (input device, output device, memory, arithmetic unit, controller)

Input devices: devices that enable computers to obtain information from the outside, such as mouse, keyboard, light pen, scanner, microphone, digital camera, camera,

Handwriting output device: a device that displays the results of computer processing information in a form that can be recognized by people, such as monitors, printers, plotters, speakers and projectors.

Memory: such as hard disk, CD-ROM drive, U disk, etc.

Arithmetic unit: arithmetic operation, logical operation

Controller: If the instruction is fetched from the memory, it controls the coordinated operation of all parts of the computer.

The controller and the arithmetic unit are integrated in the CPU.

(2) the composition of software

Software definition: a general term for programs and related documents.

Software classification: system software (software for using and managing computers) and application software (designed for

Software compiled by an application)

Common system software includes: operating system, database management system and programming language. Common application software includes: auxiliary teaching software, auxiliary design software and word processing software.