# Digital Electronics - Logic Gates

### Exercise :: Logic Gates - General Questions

61.

How many entries would a truth table for a four-input NAND gate have?

 A. 2 B. 8 C. 16 D. 32

Explanation:

No answer description available for this question. Let us discuss.

62.

The Boolean expression for a 3-input OR gate is ________.

 A. X = A + B B. X = A + B + C C. X = ABC D. X = A + BC

Explanation:

No answer description available for this question. Let us discuss.

63.

From the truth table for a three-input NOR gate, what is the only condition of inputs A, B, and C that will make the output X high?

 A. A = 1, B = 1, C = 1 B. A = 1, B = 0, C = 0 C. A = 0, B = 0, C = 1 D. A = 0, B = 0, C = 0

Explanation:

No answer description available for this question. Let us discuss.

64.

The logic gate that will have a LOW output when any one of its inputs is HIGH is the:

 A. NAND gate B. AND gate C. NOR gate D. OR gate

Explanation:

No answer description available for this question. Let us discuss.

65.

The output of a NAND gate is LOW if ________.

 A. all inputs are LOW B. all inputs are HIGH C. any input is LOW D. any input is HIGH