Uses of keyboard, mouse, monitor and printer

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Print the document typed.

Keyboard
A keyboard is an input device used to type data into a computer.
Mouse
A 'Mouse' in Information Technology terms refers to a small handheld device that a computer user pushes across a desk surface in order to point to and select information on a computer screen.
Printer
A printer in Information Technology is a device that accepts text and graphic output from a computer and transfers the information to paper.
Monitor
A monitor in Information Technology is a device used to display visual output from a computer.