Question

explain the function and usage of bar code reader

Answer 1

The barcode reader scans the barcode or reads it and the barcodes are saved in it. Its function is to read a barcode, scan it and give the output or save on the screen.

Answer 2

Answer:

A bar code reader (or bar code scanner) is an electronic device that can read and output printed barcodes 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.Additionally, nearly all barcode readers contain decoder circuitry analyzing the bar code's image data provided by the sensor and sending the barcode's content to the scanner's output port.