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Q.

Which is not necessary when using bar codes in supermarkets?

A

Point-of sale (POS) terminal

B

Check digit on the bar code

C

Price on the shelf

D

Price on the goods

E

None of the above

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In digital computer, all the expressions are coded into

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2.

Which is not necessary when using bar codes in supermarkets?

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Point-of sale (POS) terminal

B

Check digit on the bar code

C

Price on the shelf

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Price on the goods

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Only few languages are supported

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