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INPUT
An input device is any hardware device that sends data to a computer, allowing users to interact with and control it. The picture shows the a Logitech trackball mouse; an example of an input device. Below is a listing of different computer input devices that can be used on a computer.
SCANNER
is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image
OUTPUT
An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an
information processing system (such as a computer) which converts the electronically generated information into human-readable form.
Display devices
PLOTTER
The plotter is a computer printer for printing vector graphics. In the past, plotters were used in applications such as computer