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Devices Input / Output ISC

Devices Input / Output

are those that enable communication between computer and user . Input Devices

are those used to enter data into the computer for processing. The data are read from the input devices and stored in main memory or internal. The input devices convert information into electrical signals that are stored in memory central.

KEYBOARD an alphanumeric keyboard is used primarily as a vo devices for r intro text. The keyboard is an effective device to enter data as labels graphic image associated with a display of graphics. The keyboards can also be offered with features that facilitate the entry of coordinates of the screen, menu selections and functions of graphs.

MOUSE is an electronic device that allows us to give instructions to nu strategic computer through a cursor on the screen and clicking to to perform an action. As the mouse wheel on the desktop, mail, the cursor (pointer) on the screen does the same. Such a procedure will control, aim, hold and manipulate various graphical objects (and text) into one program.


SCANNERS is a unit of data entry. Allows the introduction of Img enes the computer graphics through a dot matrix system, as a result of optical scanning of the document. The information is stored in files as bitmaps (bit maps), or other more efficient formats such as JPEG or GIF.


MICROPHONES Microphones are transducers * responsible for transforming energy accumulated acoustic to electrical energy, enabling therefore the recording, storage, transmission and electronic processing of audio signals. Devices are dual speakers, both transducers constituting the most significant elements in terms of sound patterns that superimposed on the audio signals.

PEN OPTICAL is a unit of data entry works coupled to a photosensitive screen.

Output Devices

are the ones who can represent the results (output) data processing. The typical output device or monitor screen. Other output devices include printers (print results on paper), plotters (plotters), speakers, among others ...


MONITOR: most common output devices of computers with which or processors / users see information on screen. He also received the names of CRT, screen or terminal. Computer distinction between the "monitor", which includes all the equipment which produces images, and the "screen", which is just the area where we see the images. Thus, the output device is the entire monitor, not just the screen.

PRINTER: As the name implies, the printer is a peripheral that the orderly ordinator used to present information in paper form. The first printers were born many years before the PC and even before the monitors, being for years the most common method for presenting the results of the calculations in those early computers, a breakthrough on the cards and punch tape that were used to then.

SPEAKERS: Every time the computer uses more sound management, for which used as some sort of speaker output. Some speakers are tables, similar to that of any other instrument sounds and are portable (headphones). There are many different models, according to its design and capacity in watts they have.