English, asked by msarfaraz672, 2 months ago

what is pen and explain its use​

Answers

Answered by divyasivas23
0

Answer:

A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's cathode-ray tube (CRT) display. ... A light pen detects changes in brightness of nearby screen pixels when scanned by cathode-ray tube electron beam and communicates the timing of this event to the computer.

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