Digital Electronics - Code Converters and Multiplexers

Exercise :: Code Converters and Multiplexers - General Questions

16. 

A BCD decoder will have how many rows in its truth table?

A. 10
B. 9
C. 8
D. 3

Answer: Option A

Explanation:

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17. 

How many possible outputs would a decoder have with a 6-bit binary input?

A. 16
B. 32
C. 64
D. 128

Answer: Option C

Explanation:

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18. 

Most demultiplexers facilitate which type of conversion?

A. decimal-to-hexadecimal
B. single input, multiple outputs
C. ac to dc
D. odd parity to even parity

Answer: Option B

Explanation:

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19. 

The inputs/outputs of an analog multiplexer/demultiplexer are:

A. bidirectional
B. unidirectional
C. even parity
D. binary-coded decimal

Answer: Option A

Explanation:

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20. 

Why can a CMOS IC be used as both a multiplexer and a demultiplexer?

A. It cannot be used as both.
B. CMOS uses bidirectional switches.

Answer: Option B

Explanation:

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