COMPUTER FUNDAMENTALS

Detailed explanation-1: -A barcode reader or barcode scanner is an optical scanner that can read printed barcodes, decode the data contained in the barcode to a computer. Like a flatbed scanner, it consists of a light source, a lens and a light sensor for translating optical impulses into electrical signals.

Detailed explanation-2: -At a typical supermarket checkout counter, a scanner is used to identify a product through its barcode, and a computer then looks up the item’s price and feeds that number into the cash register, where it becomes part of the bill for the customer’s purchases.

Detailed explanation-3: -The barcode reader is an example of the input device of a computer system used to insert raw data into the computer system.