What is a Barcode Scanner?

If you are familiar with purchasing items with barcodes printed on their label, then you have seen how a barcode scanner work. This is the little handheld device with red lasers on it. The cashier points to on every item you purchased at a local convenience store. Sometimes it is conveniently located at the cashier’s counter top, allowing her to slide the items being purchased across the counter top. Basically, the function of the barcode scanner is to input the item number of particular product by reading the printed barcode…

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