Digital Electronics - Logic Gates

Exercise :: Logic Gates - General Questions

46. 

The term "hex inverter" refers to:

A. an inverter that has six inputs
B. six inverters in a single package
C. a six-input symbolic logic device
D. an inverter that has a history of failure

Answer: Option B

Explanation:

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47. 

How many inputs are on the logic gates of a 74HC21 IC?

A. 1
B. 2
C. 3
D. 4

Answer: Option D

Explanation:

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48. 

The basic logic gate whose output is the complement of the input is the:

A. OR gate
B. AND gate
C. inverter
D. comparator

Answer: Option C

Explanation:

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49. 

When reading a Boolean expression, what does the word "NOT" indicate?

A. the same as
B. inversion
C. high
D. low

Answer: Option B

Explanation:

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50. 

The output of an exclusive-NOR gate is HIGH if ________.

A. the inputs are equal
B. one input is HIGH, and the other input is LOW
C. the inputs are unequal
D. none of the above

Answer: Option A

Explanation:

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