In computer science, output devices ( output ) are known as output devices to those who allow the extraction or recovery from information from the computer or computer system, i.e., its translation into visual terms, sound, printed, or otherwise.
This implies that the output devices do not usually enter information into the system, except in mixed or input/output or I / O devices, which can fulfill both functions.
The output devices are varied and allow communication of the computerized system with the outside, either with the user, with other systems or with a network thereof, since it is the only way to obtain data from the system, generally represented somehow.
Examples of output devices
Some common examples of output devices are:
- Monitors. The standard output device, which converts the system’s digital signals into visual information, is represented graphically so that users of the system can perceive it. There are monitors of all kinds, varying in their capacity of visual quality, and some even allow the entry of information through touch screens (thus becoming I / O).
- Printers. Another classic of computing that does not lose its validity is the device capable of converting the digital content of the computer into a printed document, thus allowing it to be extracted and converted into a tangible object that can be intervened by hand. Printers generally use paper and various inkjet or laser systems.
- Speakers. The speakers extract the information from the system but translate it into sound signals that users can hear. Thus, electrical impulses become sound ( sound waves) contrary to the operation of recorders or microphones.
- Video beams and projectors. These are devices that receive information from the computerized system and represent it graphically, much as monitors do. Instead of emitting it on a screen, the project that information as beams of light, in the same way, that a movie projector or for slideshow. Thus, the information can be seen on a wall or a surface intended for it, and much larger.
- CD or DVD copiers. These disc formats, both Compact Disc (CD) and Digital Video Disc (DVD), allow information to be transferred from one system to another; only that once copied or “recorded,” they function as a matrix from which information can be replicated but not incorporate new data. Thus, the copier of these discs allows us to extract information from the system and pass it to said discs.
- Modems. Modems allow the communication of the computer with computer systems or networks that can overcome great distances, emitting (and receiving) information through cables or bands of radio waves. It is an I / O device.