light pen

noun

Definition of light pen

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

Examples of light pen in a Sentence

  1. writing with a light pen

First Known Use of light pen

1958


LIGHT PEN Defined for English Language Learners

light pen

noun

Definition of light pen for English Language Learners

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


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