Question

Explain light pen and touch screen in details

Answer 1

The answer will be useful

Answer 2

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.

Explanation:

This is the explanation of Light pen

And this is

Touch screen-A touch screen is a computer display screen that serves as an input device. When a touch screen is touched by a finger or stylus, it registers the event and sends it to a controller for processing.