Input-Output Unit
An I/O unit is a component of computer. The I/O unit is composed of two parts:
- input unit and
- output unit. The input unit is responsible for providing input to the computer and the output unit is for receiving output from the computer.
Input Unit:
The input unit gets the data and programs from various input devices and makes them available for processing to other units of the computer.
The input data is provided through input devices, such as—keyboard, mouse, trackball and joystick. Input data can also be provided by scanning images, voice recording, video recording, etc.
Irrespective of the kind of input data provided to a computer, all input devices must translate the input data into a form that is understandable by the computer, i.e., in machine readable form. The transformation of the input data to machine readable form is done by the
input interface of input device.
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