What is a multimedia device

Multimedia integrates technologies such as computer, television, video recorder, tape recorder and game machine, forming an operating environment where computers and users can communicate with each other. It can receive images, sounds, videos and various media information from the outside world, and output them in various ways such as pictures, words, sounds and animations after being processed by the computer, thus realizing the diversification of input and output modes, changing the limitation that the computer can only input and output words and data, and the computer can start talking and singing. 1984, when Apple introduced its first multimedia computer, people didn't care. Nowadays, multimedia is always the most popular "princess" in computer exhibitions held around the world.

Multimedia technology has two remarkable characteristics: first, it is comprehensive, integrating computer, audio-visual and communication technologies, and it is a comprehensive performance of computers, televisions, video recorders, tape recorders, stereos, game consoles and fax machines; Secondly, it is full of interactivity, which can form the interaction between people and machines, the interactive operating environment and the immersive scene, which people can control according to their own needs. Man-machine interaction is the biggest feature of multimedia.

What is multimedia?

Sound, images, graphics, text, etc. It is not accurate because it is easily confused with material media (also called media) that carry information for transmission and storage, such as electromagnetic wave, light, air waves, current, magnetic media and so on. Nowadays, however, the term multimedia is almost synonymous with words, graphics, images and sounds. In other words, most people think that multimedia is a combination of sound, image and graphics, so this inaccurate word has been used in general articles. At present, the popular multimedia concept mainly refers to a variety of information types that can be directly felt and understood by organs such as words, graphics, images and sounds, which has become a narrow understanding of multimedia. In the field of computer and communication, what we mean by words, graphics, sounds, images and animations can all be called media. From the perspective of information processing by computers and communication equipment, we can classify the forms of original information in nature and human society-data, words, spoken language, sound, painting, animation and images (still photos and moving movies, television and video) into three basic media: sound, picture and text. Traditional computers can only deal with a single medium-"text", and television can spread information that integrates sound, picture and text, but it is not a multimedia system. Through TV, we can only passively accept information from one direction, but can't actively process information from two directions, so there is no so-called interactivity. Although videophone is interactive, we can only hear the sound and see the image of the speaker, and it is not multimedia. The so-called multimedia refers to the technology that can simultaneously collect, process, edit, store and display two or more different types of information media, including words, sounds, graphics, images, animations and moving images.