Scanner keyboard monitor write three and give to me
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* Scanner : A scanner is an input device that scans documents such as photographs and pages of text.This creates an electronic version of the document that can be viewed and edited on a computer
* keyboard : A computer keyboard is a typewriter-style device which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches. Following the decline of punch cards and paper tape, interaction via teleprinter-style keyboards became the main input method for computers.
* Monitor : A computer monitor is an output device that displays information in pictorial form. A monitor usually comprises the visual display, circuitry, casing, and power supply. ... Older monitors used a cathode ray tube (CRT).
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