Input and Output Devices

What are they?

Input

Input devices send data and control signals to the computer. Input is whatever goes into the computer. Input can take a variety of forms, from commands you enter from the keyboard to data from another computer or device. A device that feeds data into a computer, such as a keyboard or mouse, is called an input device. Here are some examples of Input devices.

Central Processing Unit (CPU)

The CPU runs computer programs and processes input data into a readable format understood by humans. Sometimes referred to simply as the central processor, but more commonly called processor, the CPU is the brains of the computer where most calculations take place. In terms of computing power, the CPU is the most important element of a computer system.
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Output

Output devices communicate the results of processed data. Output is anything that comes out of a computer. Output can be meaningful information or gibberish, and it can appear in a variety of forms - as binary numbers, as characters, as pictures, and as printed pages. Here are some examples of Output devices.
Input and output devices