In the computer world we hear people talking about input and output devices, but many of us don't know what they are. Input devices are devices that you connect to your computer to input data, items such as the keyboard and mouse are input devices. Output devices are those that give us information from the computer, such as monitors and printers.
There are also some devices that work as both an input, and output device, modems and network cards are great examples. You can find more information here: en.wikipedia.org/wiki/Input/output.
Similarly, after the computer has processed your data, you often need to produce output of the results. This output could be a display on the computer screen, hard copy on printed pages, or even the audio playback of music you composed on the computer. The terms “input” and “output” are used both as verbs to describe the process of entering or displaying the data, and as nouns referring to the data itself entered into or displayed by the computer.
Below we discuss the variety of peripheral devices used for computer input and output. The computer keyboard is used to enter text information into the computer, as when you type the contents of a report. The keyboard can also be used to type commands directing the computer to perform certain actions.
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