Digital Electronics Logic Gates Online Test, Digital Electronics MCQ

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

If a 3-input NOR gate has eight input possibilities, how many of those possibilities will result in a HIGH output?

If a signal passing through a gate is inhibited by sending a LOW into one of the inputs, and the output is HIGH, the gate is a(n):

A device used to display one or more digital signals so that they can be compared to expected timing diagrams for the signals is a:

When used with an IC, what does the term “QUAD” indicate?

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

Which of the following logical operations is represented by the + sign in Boolean algebra?

Output will be a LOW for any case when one or more inputs are zero for a(n):

How many pins does the 4049 IC have?

Which of the following choices meets the minimum requirement needed to create specialized waveforms that are used in digital control and sequencing circuits?

TTL operates from a ________.

The output of a NOR gate is HIGH if ________.

The switching speed of CMOS is now ________.

The format used to present the logic output for the various combinations of logic inputs to a gate is called a(n):

The power dissipation, PD, of a logic gate is the product of the ________.

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

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

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

What does the small bubble on the output of the NAND gate logic symbol mean?

What are the pin numbers of the outputs of the gates in a 7432 IC?

The output of a NOT gate is HIGH when ________.

How many inputs of a four-input AND gate must be HIGH in order for the output of the logic gate to go HIGH?

If the output of a three-input AND gate must be a logic LOW, what must the condition of the inputs be?

Logically, the output of a NOR gate would have the same Boolean expression as a(n):

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?

What is the Boolean expression for a three-input AND gate?

Which of the following gates has the exact inverse output of the OR gate for all possible input combinations?

What is the difference between a 7400 and a 7411 IC?

The output of an exclusive-OR gate is HIGH if ________.

The AND function can be used to ________ and the OR function can be used to ________ .