A barcode is like a special picture that tells machines what something is. When you scan it with a scanner, it reads the black and white lines and turns them into numbers or letters. It became popular because it made counting, checking prices, and keeping track of things much faster and easier for stores.
Examples
- When you scan a barcode on your cereal box, the scanner reads it and tells the store what kind of cereal it is.
- A barcode helps the cash register know how much money to charge for each item when you're done shopping.
- Libraries use barcodes on books so they can quickly check out or return them.
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See also
- Why Do We Use ‘Barcodes’ on Products and How Do They Work?
- How Do Clocks Know the Time?
- How Do Clock Towers Work?
- How Do Algorithms Influence Our Decisions?
- How Do Clocks Know What Time It Is?
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