| 单词 | optical scanner |
| 释义 | optical scannernouna 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 Words nearby optical scanneroptical printer, optical pumping, optical pyrometer, optical resonator, optical rotation, optical scanner, optical scanning, optical sound, optical soundtrack, optical tooling, optical tweezers Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for optical scanneroptical 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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