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optical scanner

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noun
a computer peripheral device enabling printed material, including characters and diagrams, to be scanned and converted into a form that can be stored in a computerSee also optical character reader
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How to use optical scanner in a sentence

Scientific definitions for optical scanner

optical scanner

A device that converts printed images and text into digital information that can be edited, transmitted, and stored. Optical scanners work by electronically measuring the intensity of color at a large number of individual locations across the page (often using phototransistors), and converting these measurements into digital numerical values usable by computers and other digital devices. See also A/D converter.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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