optical scanner
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Optical
scanner are capable of reading information recorded on the paper employing
light source and light sensor.
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The
information to be scan is type written information code and ink or pencil makes
or information codes in the base.
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It is divided
in to three types:-
1. Optical character reader (OCR)
2. optical mark reader (omr)
3. Optical bar character reader (0bcr)
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