Question

what is bar code readers​

Answer 1

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• 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.

Answer 2

Answer:

• A barcóde scanner, also called a point-of-sale (POS) scanner or a price scanner, is a device used to capture and read information contained in a barcóde.
• A barcóde scanner works by directing a beam of light across the barcóde and measuring the amount of light that is reflected back.