Light pen
Computer input device
Summary
A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a cathode-ray tube (CRT) display.
Modified
5/21/2026, 9:50:22 PM
Source: WikipediaView full article↗
Computer input device
A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a cathode-ray tube (CRT) display.
Modified
5/21/2026, 9:50:22 PM
