Optical scanner is a device that can read text or illustrations printed on paper and translate the information into a form. The computer can use. A scanner works by digitizing an image.Some scanners are small hand-held device that you move across the paper. These hand held scanners are often called half-page. Scanners because they can only scan 2 to 5 inches at a time. Hand-held scanners are good for scanning small pictures and. Photos but they, are difficult to use if you need to scan a large page.Larger scanners include machines into which you can feed sheets of paper. These are called sheet-fed scanners. Sheet-fed. Scanners are excellent for loose sheets of paper but they, are unable to handle bound documents.Large scanners are called flatbed scanners. They consist of a board which you lay books magazines and other documents,,, That you want In scan.
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