Related introduction:
Where does the word media come from? Latin "Medius", transliterated as a medium, means somewhere in between. Media refers to the media that spreads information.
It means that people use tools, channels, carriers, intermediaries or technical means to transmit and obtain information. Media can also be regarded as all technical means to realize the transmission of information from information sources to recipients. Media has two meanings, one is the object that carries information, and the other is the entity that stores, presents, processes and transmits information.
The word "media" is next to the word "women". In the poem Feng Wei's Self-protection, there is a saying, "When I was robbed, my son had no good media." As the old saying goes, there is no cloud or rain on the sky, and there is no media or marriage on the ground. It can be seen that a long time ago, "media" mainly played an intermediary role in the marriage between men and women.
Classification:
(1) Perceptual medium: refers to the medium that directly acts on human sensory organs and makes people feel directly. For example, sounds that cause auditory reactions, images that cause visual reactions, and the like.
(2) Performance media: refers to the intermediary media that transmits the sensory media, that is, the code used for data exchange. Such as image coding (JPEG, MPEG, etc. ), text coding (ASCII code, GB23 12, etc. ) and voice coding.
(3) Presentation media: refers to the media for information input and output. Such as keyboard, mouse, scanner, microphone, camera, etc. As an input medium; Monitors, printers, speakers, etc. It's an output medium.
(4) Storage media: refers to the physical media used to store the presentation media. Such as hard disk, floppy disk, magnetic disk, optical disk, ROM and RAM.