# Digital Electronics - Code Converters and Multiplexers

### Exercise :: Code Converters and Multiplexers - General Questions

6.

What is the function of an enable input on a multiplexer chip?

 A. to apply Vcc B. to connect ground C. to active the entire chip D. to active one half of the chip

Answer: Option C

Explanation:

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7.

The expansion inputs to a comparator are used for expansion to a(n):

 A. 4-bit system B. 8-bit system C. BCD system D. counter system

Answer: Option B

Explanation:

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8.

What do the mathematical symbols A < b and A > B mean?

 A. A < B means A is greater than B. A > B means A is less than B. B. A > B means A is less than B. A < B means A is greater than B. C. A < B means A is less than B. A > B means A is greater than B.

Answer: Option C

Explanation:

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9.

A basic multiplexer principle can be demonstrated through the use of a:

 A. single-pole relay B. DPDT switch C. rotary switch D. linear stepper

Answer: Option C

Explanation:

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10.

How many inputs will a decimal-to-BCD encoder have?

 A. 4 B. 8 C. 10 D. 16

Answer: Option C

Explanation:

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