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.

2023年10月18日 · A light pen is a type of pointing input device that detects light and is frequently used to select or alter text or data on a screen. These devices, when used with a CRT (cathode ray tube) monitor, were an early method of highlighting and modifying data on the screen.

2017年10月11日 · A light pen is a light-sensitive pointing input device commonly used to select or otherwise modify text or data on a screen. Used with a CRT (Cathode Ray Tube) monitor, these devices were an early form of manipulating and highlighting data on the screen.

2023年6月24日 · Definition of Light pen -: Light Pen, which is similar to the Normal Pen, is a pointing input device that is used to select the menu or picture display on the screen of a mobile or computer.

CAVN Pen Light with Pupil Gauge LED Penlight for Nurses Doctors, 2 Pcs Reusable Medical Penlight for Nursing Students (Rose Gold/White)

2023年7月28日 · One of the key advantages of light pens is their ability to provide precise and accurate input. Unlike other input devices that may require multiple attempts to accurately select or interact with an object on a screen, light pens allow for pinpoint accuracy.

2024年6月2日 · A light pen is a pointing device that resembles a pen and is used to interact with a computer screen or monitor. It is a handheld device that emits light and is equipped with a light-sensitive detector at the tip.

A light-sensitive stylus wired to a video terminal used to draw pictures or select menu options. The user brings the pen to the desired point on screen and presses the pen button to make...