If the input to a NOT gate is A and the output is X, then ________. X = A X = 0

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Question
If the input to a NOT gate is A and the output is X, then ________.
Options
A. X = A
B.
C. X = 0
D. none of the above

Correct Answer

Logic Gates problems

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1. The term "hex inverter" refers to:
Options
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

4. Which of the following equations would accurately describe a four-input OR gate when A = 1, B = 1, C = 0, and D = 0?
Options
A. 1 + 1 + 0 + 0 = 01
B. 1 + 1 + 0 + 0 = 1
C. 1 + 1 + 0 + 0 = 0
D. 1 + 1 + 0 + 0 = 00

5. Logically, the output of a NOR gate would have the same Boolean expression as a(n):
Options
A. NAND gate immediately followed by an inverter
B. OR gate immediately followed by an inverter
C. AND gate immediately followed by an inverter
D. NOR gate immediately followed by an inverter

6. If the output of a three-input AND gate must be a logic LOW, what must the condition of the inputs be?
Options
A. All inputs must be LOW.
B. All inputs must be HIGH.
C. At least one input must be LOW.
D. At least one input must be HIGH.

10. A logic probe is again applied to the pins of a 7421 IC with the following results. Is there a problem with the circuit and if so, what is the problem?
Options
A. Pin 6 should be ON.
B. Pin 8 should be ON.
C. Pin 8 should be pulsing.
D. no problem

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