Dictionary

light pen

noun

computers : a device shaped like a pen that senses light signals and is used to work with information on a computer screen

Full Definition of LIGHT PEN

:  a pen-shaped device for direct interaction with a computer through a cathode-ray tube display

Examples of LIGHT PEN

  1. writing with a light pen

First Known Use of LIGHT PEN

1958

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May 24, 2015
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