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The output devices are those devices that provide computers with the indispensable function of communicating information to the user after it has been processed by him.
The presentation of data After being processed, in any of its forms, it is carried out by this class of devices that will be much more useful the more they can make the presentation of the work simple and practical.
The output devices, together to the input devices, constitute the group of peripherals that give true utility to computers.
At the same time that data processing systems evolved over time, these peripherals were endowed with greater technological advances, currently allowing the use of computers to people with only a few years of life, when, remember, the First computers were thought to be used only by people who knew perfectly the commands and circuits that were in it.
It can serve you:
- Input devices
Examples of output devices
Monitor
In the output devices there is one par excellence, whose example perfectly synthesizes the history of this class of devices: the monitor. Through a graphics card, the computer and the peripheral are connected, allowing the image of the processing being carried out on the computer to be observed on the monitor, allowing the user to have a notion of what he is actually doing through this image.
The first monitors emerged in the early 1980s, and they were monochromatic, only showing text. The following monitors, CGA and EGA were progressively adapting to the support of colors and graphics, and also increasing the pixel resolutions. VGA monitors, created in 1987 by the IBM company, were instrumental in incorporating an amount of video memory, rendering previous models obsolete.
The most recent time in the history of monitors made them divided into two classes, according to the way the image is represented: CRTs are those that use cathode rays, drawing an image that sweeps the electrical signal, at the same time that LCDs use a liquid crystal using substances that share the properties of solids and liquids at the same time.
Speakers
Device through which the computer lets out sounds. There are both tabletop and for the ear, commonly known as headphones. The functionality is the same and the volume can be adjusted from the computer.
Printer
Peripheral used to present information on paper. It is the ideal complement to all the text or graphics procedures that the PC has, since the printer is the one that takes all this work to the dimension of physical objects, beyond the computer.
Plotter
Graph plotter, functional for architectural or technical drawing tools.
Projector
Using some programs, projectors can enlarge the monitor image and make it visible to large groups of people.
CD / DVD
Although they are not peripheral devices, and they are not only output devices (since it simultaneously functions as an input device), in fact, the information processed by the PC can be carried there.
More examples in:
- Input and output peripherals
