Jisho

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Noun
1. light pen
Wikipedia definition
2. Light penA light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's 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. It was long thoughtTemplate:Whom? that a light pen can work with any CRT-based display, but not with LCDs (though Toshiba and Hitachi displayed a similar idea at the "Display 2006" show in Japan) and other display technologies.
Read “Light pen” on English Wikipedia
Read “ライトペン” on Japanese Wikipedia
Read “Light pen” on DBpedia
Other forms
ライト・ペン

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