Question

what are the difference between input device and output device

Answer 1

An input device sends information to a computer system for processing, and an output device reproduces or displays the results of that processing. ... Those signals are then interpreted by the computer and displayed, oroutput, on the monitor as text or images.

Answer 2

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Input devices
*they take data from user to manipulate the information
*they take data from user
*they did not involved in the computing of data.

Out put devices
*they show user the manipulated information
*they give information to user
*they involved in providing the information only.