To get an OR gate from a NAND gate, we need

Question

To get an OR gate from a NAND gate, we need (A) Only two NAND gates (B) Two NOT gates obtained from NAND gates and one NAND gate (C) Four NAND gates and two AND gates obtained from NAND gates (D) None of the above

Tardigrade Admin · Accepted Answer

To obtain OR gate from NAND gates we will use two NOT gates obtained from NAND gates and one NAND gate as shown in adjoining figure. Boolean expression is

Y = \overline{\overset{ˉ}{A} \cdot \overset{ˉ}{B}} = \overline{\overset{ˉ}{A}} + \overline{\overset{ˉ}{B}} = A + B

Which is of OR gate.

Q. To get an OR gate from a NAND gate, we need

Only two NAND gates

Two NOT gates obtained from NAND gates and one NAND gate

Four NAND gates and two AND gates obtained from NAND gates

None of the above

To obtain OR gate from NAND gates we will use two NOT gates obtained from NAND gates and one NAND gate as shown in adjoining figure. Boolean expression is Y=Aˉ⋅Bˉ=Aˉ+Bˉ=A+B Which is of OR gate.

Q. To get an $OR$ gate from a $N A N D$ gate, we need

To obtain OR gate from NAND gates we will use two NOT gates obtained from NAND gates and one NAND gate as shown in adjoining figure. Boolean expression is

$Y = \overline{\overset{ˉ}{A} \cdot \overset{ˉ}{B}} = \overline{\overset{ˉ}{A}} + \overline{\overset{ˉ}{B}} = A + B$
Which is of OR gate.