ALU 101 Digital Logic Gates

Question 1

Which logic gate outputs HIGH only when all its inputs are HIGH?

Accepted Answer

AND

Answer

OR

Answer

NAND

Answer

XOR

Question 2

What is the output of a NOT gate when the input is 0?

Accepted Answer

1

Answer

0

Answer

Undefined

Answer

High-impedance

Question 3

Which gate is the complement of the AND gate?

Accepted Answer

NAND

Answer

OR

Answer

XOR

Answer

XNOR

Question 4

An XOR gate outputs HIGH when its two inputs are:

Accepted Answer

Different

Answer

Both 0

Answer

Both 1

Answer

Same

Question 5

How many input combinations does a 3-input AND gate have?

Accepted Answer

8

Answer

4

Answer

6

Answer

16

Question 6

Which logic gate is considered a universal gate?

Accepted Answer

NAND

Answer

AND

Answer

OR

Answer

XOR