We explain what an output device is in computing and what it is for. In addition, examples of such devices.
What are the output devices?
In computer science, it is known as output devices to those that allow the extraction or retrieval of information from the computer or computer system, that is, its translation visual, sound, printed or any other nature.
This implies that the output devices do not usually introduce information to the system, except in the case of mixed or input / output devices or I / O (in English input / output or I / O), which They can fulfill both functions.
The output devices are varied and allow the communication of the computerized system with the outside, either with the user, with other systems or with a network of them, since it is the only way to obtain System data, usually represented in some way.
See also: Input devices.
Examples of output devices
Some common examples of output devices are:
- Monitors The standard output device, which converts the digital signals of the system into visual information, represented graphically, so that users of the system can perceive it. There are monitors of all types, varying in their capacity for visual quality, and some even allow the entry of information through touch screens (thus becoming I / O).
- Printers Another computer classic 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, which can be intervened by hand . Usually printers use paper and various inkjet or laser systems.
- Speakers The speakers extract the information from the system, but translating it into sound signals that users can hear. Thus, the electrical impulses become sound (sound waves) contrary to the operation of the recorders or microphones.
- Videobeams and projectors . These are devices that receive information from the computerized system and represent it graphically, much like the monitors do, but instead of broadcasting on a screen, they project that information as light beams, in the same way as a film 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 the Compact Disc (CD) and the Digital Video Disc (DVD), allow information to be transferred from one system to another; only that once copied or "recorded", they function as an array from which information can be replicated but not incorporate new data. The copier of these discs, thus, allows to extract information from the system and pass it to said discs.
- Modems The modems allow the communication of the computer with systems or computer networks that can overcome great distances, emitting (and receiving) information through cables or bands of radio waves. It is really an I / O device.