A Scanner is machine which recognizes optical characters. It has a computer processor, a scan head and an output device. The scan head is used to read images which in turn is translated by the computer and produced in a usable form. For example, a scanner is used to read invoices that have been returned with the payment checks by a direct-mail marketer. The code on the invoice is picked up by the scanner that indicates how much was owed and which customer is ...
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