Учебное пособие по дисциплине: Профессиональный английский язык для специальности: «Программирование в компьютерных системах»

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What is an Optical Scanner?

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 devices 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 on which you lay books, magazines, and other documents that you want to scan.

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