Barcode is widely used by us in our day-to-day life. A barcode is an optical machine-readable representation of data, which shows data about the object to which it is attached. Originally barcodes represent data by varying the widths and spacings of parallel lines, and may be referred to as linear or one-dimensional (1D). How the Barcode scanners work?. Here is a infographic which answers the question how barcode scanners work.
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