Question

What is light pen? Where it is used?

Answer 1

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ȯ 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. 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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Answer 2

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• 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.
• 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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