light pen

音标发音

Input devices include keyboards and pointing devices such as mouse joystick track ball or light pen.
输入设备包括键盘和点击设备如鼠标，操纵杆，跟踪球或光笔。
The light pen is a hand-held probe with three point light sources (LEDs) and a spherical touch stylus arranged in one line.
光笔是一种手持式触发测头，在笔体上装有三个与球形笔尖测头中心成一条直线的点光源（发光二极管）。
Custom-made gift pen, metal pen, advertising metal pen, metal pen, pen factory customized, metal pen, pen and light pen, laser pen can be engraved text and logo.
定做礼品笔，金属笔，广告金属笔，金属圆珠笔，笔厂订做，金属签字笔，钢笔和灯笔，镭射笔可雕刻文字及标志。
www.pen.sh.cn

Later this year Dr Tzou hopes to have one that will deliver femtosecond pulses along flexible fibre cables, which can be held like a light-pen.
ECONOMIST: Ultra-fast lasers

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
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

光笔
The light pen is a hand-held probe on which at least three point light sources and a spherical touch stylus are mounted in one line.
光笔上至少装有三个点光源和一个带球形笔尖的触发测头,各点光源和触发测头球形笔尖的中心理论上在一条直线上。
计算机科学技术
光笔