| light pen n. A small, photosensitive device connected to a computer and moved by hand over an output display in order to manipulate information in the computer. |
light pen
n
(Electronics & Computer Science / 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
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  light pen - (computer science) a pointer that when pointed at a computer display senses whether or not the spot is illuminatedpointer - an indicator as on a dial computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures |
Translations
light pen n → penna luminosa or ottica, light pen f inv
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