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Q.

What is the number of bit patterns provided by a 7-bit code?

A

256

B

128

C

64

D

512

E

None of the above

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A six - digit card field used for postal ZIP codes is defined as

A

A letter field

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None of the above

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2.

Which is not necessary when using bar codes in supermarkets?

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The original ASCII code used _____ bits of each byte, reserving that last bit for error checking.

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8

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One byte can be used to encode any integer between 'O' and -inclusive

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C

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None of the above

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5.

What is the number of bit patterns provided by a 7-bit code?

A

256

B

128

C

64

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512

E

None of the above

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