Barcode

A barcode is like a secret code that stores information about a product or an item. Think of it like the secret codes you and your friend use to talk without anyone else understanding. The barcode has lines of different thicknesses and spaces between them, and each combination of lines and spaces represents a number or a letter.

When you go to a store, the cashier scans the barcode with a special machine that reads the lines and spaces. The machine then tells the computer what the barcode means, and the computer knows the price of the product or item. This makes it easy for the store to keep track of what they have in stock and how much they are selling.

Barcodes can be found on almost everything you buy, from your favorite snacks to the toys you play with. They come in all shapes and sizes, but they all work the same way. So the next time you see a barcode, remember that it's like a secret code that helps stores keep track of everything they have.