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GCSE Computer Science > Barcode Readers - UPC-A retail barcodes > Flashcards

Barcode Readers - UPC-A retail barcodes Flashcards

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1
Q

What do they appear to look like visually?

A

Visually, a grouping of two or more adjacent bars appear as a single wide bar

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2
Q

What are the right hand codes the inverse of?

A

The left hand codes

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3
Q

What is the difference of black and white bars in numbers between the left and right hand codes?

A

The left hand codes all have an odd number of black bars, whereas right hand codes all have even numbers

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GCSE Computer Science (36 decks)

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