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A small, photosensitive device connected to a computer and moved by hand over an output display in order to manipulate information in the computer.
(Computer Science) computing
a. a rodlike device which, when applied to the screen of a cathode-ray tube, can detect the time of passage of the illuminated spot across that point thus enabling a computer to determine the position on the screen being pointed at
b. a penlike device, used to read bar codes, that emits light and determines the intensity of that light as reflected from a small area of an adjacent surface
a hand-held light-sensitive input device used for drawing on a computer display screen or for pointing at characters or objects, as when choosing options from a menu.
A light-sensitive input device with which one can draw” on a VDU.
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|Noun||1.||light pen - (computer science) a pointer that when pointed at a computer display senses whether or not the spot is illuminated|
pointer - an indicator as on a dial