A scanner is a device which can scan documents to different file formats.  The scanner analyses an image and  saves it to a file on a computerScanners read colour  from a document or photo. What the scanner captures is  the DPI dots per inch and the PPI pixels per inch. The CCD array  is a collection of  light sensitive diodes which  change light into electrical charge. When the document is placed on the scanner the  lamp light up the document. The image of the document sis reflected into several curved mirrors. The last mirror reflects the image into the CCDscanner_PNG11368.png


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