sentence: All scanners have special parts which are used to take a picture from an object.
sentences_before: In computing, an' image scanner' is a device used to transfer images or text into a computer. There are special models for scanning photo negatives, or to scan books. In the computer, the signal from the scanner is transferred to a digital image. This image can then be edited, printed, etc.
concept_name: scanner
headings: Image scanner
categories: Computer hardware Data input