Q. What is a light pen?

A
A Mechanical Input device
B
Optical input device
C
Electronic input device
D
Optical output device
Solution:

A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer’s CRT display. It allows the user to point to displayed objects or draw on the screen in a similar way to a touchscreen but with greater positional accuracy.

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