ALL meanings of light pen
light pen
L l - abbreviation LIGHT PEN light-sensitive pointer 1
- noun Definition of light pen in Technology (hardware) An early pointing device which the user pointed at a raster-scanned display screen. A photocell in the pen detected the flying spot of the raster scan. The position of the spot at that instant, obtained from the scanning electronics, was made available to software as (x, y) co-ordinates. 1
- noun light pen a handheld light-sensitive device used for pointing at characters or objects on a CRT in order to make or modify drawings or to indicate functions to be performed. 1
- noun light pen 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 0
- noun light pen 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 0
- noun light pen a hand-held, pen-shaped electronic device used to scan images, draw lines, designate points, etc. as on a computer video screen 0
- noun light pen (computing) A pen-like device allowing a computer user to interact with the screen display. 0