光笔是计算机的一种 输入设备，结构简单、价格低廉、响应速度快、操作简便，常用于交互式计算机图形系统中。 在 图形系统 中光笔将人的干预、显示器和计算机三者有机地结合起来，构成人机通信系统。 利用光笔能直接在显示屏幕上对所显示的图形进行选择或修改。 光笔的外形象一支 圆珠笔，由笔体、透镜组、 光导纤维 、开关和导线等组成。 工作时,光笔接受显示屏幕上的光，并将其变成电信号经放大、整形，产生脉冲信号，输入计算机，向计算机发出中断请求。 储存在 …

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.

Oct 18, 2023 · 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.

Oct 11, 2017 · 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.

light pen翻译：读码器，条形码扫描器。 了解更多。

Brighten their day with promotional light-up pens! Each pen with light tip features a bright LED for added usefulness. Our selection also includes pens with light-up logos, stylus attachments, and more. Your custom logo can be printed in vibrant colors or even laser engraved for a …

Apr 4, 2017 · History: The light pen is a unique antecedent, as it is a first attempt at touchscreen technology. It is a “penlike input device that was used with cathode-ray tube display to point at items on the screen or to draw new items or modify existing ones.

Light Pen (similar to the pen) is a pointing device which is used to select a displayed menu item or draw pictures on the monitor screen. It consists of a photocell and an optical system placed in a small tube.

A light pen, basically a stylus, is a light-sensitive directing computer input device. It is generally used to highlight text, object or alter data on a computer screen or monitor. Similar to a touchscreen, it allows users to interact with user interface objects available on the screen but with greater positional accuracy.

Jun 2, 2024 · What is a Light Pen? 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. The light pen is used to select objects on the screen by pointing directly at them.