Question

why do we use a barcode reader​

Answer 1

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It is a hand-held or stationary input device used to capture and read information contained in a bar code . A barcode reader works by directing a beam of light across the bar code and measuring the amount of light that is reflected back.

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Answer 2

Answer:

Hi mate.

A barcode reader (or barcode scanner) is an optical scanner that can read printed barcodes, decode the data contained in the barcode and send the data to a computer. Like a flatbed scanner, it consists of a light source, a lens and a light sensor translating for optical impulses into electrical signals.

Barcodes are applied to products as a means of quick identification. They are used in retail stores as part of the purchase process, in warehouses to track inventory, and on invoices to assist in accounting, among many other uses.

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