Barcode is a series of vertical bars with different widths which can be read by an optical scanner where the width and spacing of the bars represent binary data. These optical scanners, in turn, are connected to computers that decode the encoded binary data in the barcodes.There are two types of scanners in the Barcode Scanners market: Hand held and Stationary scanners. The former is generally used to read barcodes printed on stationary objects, which are large or heavy to be lifted. Meanwhile, the Stationary scanners are used in retail shops and industries where items carrying the barcodes
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