Computer logic gates

Which of the following is an universal gate?

• Not

• Or

• And

• Nor

Why is the gate in previous question called universal?

• It returns complement .

• We can find sum through it.

• All the other gates can be derived from it.

• We can find product through it.

The nand gate returns _________.

• A'+B'

• A+B

• A.B

• A

(A'+B')' is equals to

• A+B

• A'.B

• A.B'

• None of the above

In which of the following gate we require only 1 input?

• XOR

• NOT

• AND

• XNOR

XNOR is a universal gate.

• True

• False

A'B+AB' is the equation for

• NAND gate

• XNOR gate

• NOT gate

• XOR gate

NAND gate is a combination of AND and NOT gates.

• True

• False