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ahrayia [7]
3 years ago
11

How does a barcode work?

Computers and Technology
1 answer:
Genrish500 [490]3 years ago
4 0
A barcode's bars have 

1. different thicknesses, so they each signify 1 or 2 nibbles. 
2. the combinations of the thicknesses of those bars exceed the trillions. That's why manufacturers and stores never run out of SKU barcodes.
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