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25 August, 08:55

How does a barcode work?

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  1. 25 August, 12:17
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    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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