LOGIC GATES ECET

Which logic gate produces an output of 1 only when all inputs are 1?

• OR

• AND

• XOR

• NOR

The output of a NAND gate is 0 when

• All inputs are 1

• Any input is 1

• All inputs are 0

• Any input is 0

The Boolean expression for an AND gate is

• A+B

• A.B

• A-B

• A*B

Which of the following is the universal gate?

• OR

• AND

• NAND

• XOR

What is the simplified form of the Boolean expression: A + A·B?

• A+B

• A.B

• A

• B

A logic gate whose output is the inverse of the OR gate is

• XOR

• NAND

• OR

• NOR

The output of an XOR gate is 1 when

• All inputs are 1

• All inputs are 0

• Inputs are equal

• Inputs are different

The complement of A + B is

• A’ + B’

• A’ . B’

• A · B

• (A · B)’

The number of rows in the truth table for a 3-input logic circuit

• 4

• 6

• 8

• 16

Which gate has the output 1 when any one input is 1?

• AND

• NOT

• OR

• NAND