gates Quiz Practice Quiz | gates

Q: Which logic gate performs the logical multiplication?

AND — The AND gate outputs a high signal only when all inputs are high.

Q: Which logic gate performs the logical addition?

OR — The OR gate outputs a high signal if any input is high.

Q: Which logic gate inverts the input signal?

NOT — The NOT gate inverts the input, 0 becomes 1 and vice versa.

Q: The output of a NAND gate is LOW only when:

All inputs are HIGH — NAND is the inversion of AND; so when all inputs are HIGH, the output is LOW.

Q: The output of a NOR gate is HIGH only when:

All inputs are LOW — NOR is the inversion of OR; so when all inputs are LOW, the output is HIGH.

Q: Which gate is known as a universal gate?

NAND — NAND and NOR gates can implement all other gates.

Q: How many inputs does a NOT gate have?

1 — A NOT gate only inverts the single input signal.

Q: Which gate outputs a HIGH signal if and only if the inputs are different?

XOR — XOR (exclusive OR) outputs HIGH when inputs are different.

Q: What is the output of a 2-input AND gate if the inputs are A=1 and B=0?

0 — AND gate output is 1 only if both inputs are 1.

Q: What is the output of a 2-input OR gate if the inputs are A=0 and B=1?

1 — OR gate outputs 1 if any input is 1.

Question 1 of 15

Which logic gate performs the logical multiplication?

The AND gate outputs a high signal only when all inputs are high.

Question 2 of 15

Which logic gate performs the logical addition?

The OR gate outputs a high signal if any input is high.

Question 3 of 15

Which logic gate inverts the input signal?

The NOT gate inverts the input, 0 becomes 1 and vice versa.

Question 4 of 15

The output of a NAND gate is LOW only when:

NAND is the inversion of AND; so when all inputs are HIGH, the output is LOW.

Question 5 of 15

The output of a NOR gate is HIGH only when:

NOR is the inversion of OR; so when all inputs are LOW, the output is HIGH.

Question 6 of 15

Which gate is known as a universal gate?

NAND and NOR gates can implement all other gates.

Question 7 of 15

How many inputs does a NOT gate have?

A NOT gate only inverts the single input signal.

Question 8 of 15

Which gate outputs a HIGH signal if and only if the inputs are different?

XOR (exclusive OR) outputs HIGH when inputs are different.

Question 9 of 15

What is the output of a 2-input AND gate if the inputs are A=1 and B=0?

AND gate output is 1 only if both inputs are 1.

Question 10 of 15

Which gate is the inverse of the AND gate?

NAND = NOT(AND)

Question 11 of 15

What is the output of a 2-input OR gate if the inputs are A=0 and B=1?

OR gate outputs 1 if any input is 1.

Question 12 of 15

Which gate is the inverse of the OR gate?

NOR = NOT(OR)

Question 13 of 15

What is the output of a NOT gate if the input is 1?

The NOT gate inverts the input, so 1 becomes 0.

Question 14 of 15

What is the result of A XOR A?

If inputs are the same, XOR outputs 0.

Question 15 of 15

Which logic gate can be used to implement a half-adder?

A half adder uses XOR for the sum and AND for the carry.

gates Quiz