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Logic Gates

81.

Which table shows the logical state of a digital circuit output for every possible combination of logical states in the inputs ?

Answer: B

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82.

Which combination of gates does not allow the implementation of an arbitrary boolean function?

Answer: A

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83.

If a 3-input OR gate has eight input possibilities, how many of those possibilities will result in a HIGH output?

Answer: C

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84.

The terms "low speed" and "high speed," applied to logic circuits, refer to the ________.

Answer: C

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85.

The output of an AND gate with three inputs, A, B, and C, is HIGH when ________.

Answer: C

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86.

Which of the following gates is known as coincidence detector ?

Answer: A

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87.

A logic probe is placed on the output of a gate and the display indicator is dim. A pulser is used on each of the input terminals, but the output indication does not change. What is wrong?

Answer: B

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88.

Which of the following gates would output 1 when one input is 1 and other input is 0 ?

Answer: D

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89.

In a Boolean equation the use of the + symbol represents the OR function.

Answer: A

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90.

A CMOS IC operating from a 3-volt supply will consume ________.

Answer: A

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