Question

The combination of NAND gates is shown in figure. The equivalent circuit is

• A. AND gate
• B. NOR gate
• C. OR gate
• D. NOT gate

Answer 1

Answer: (C)

OR gate

Answer 2

: Boolean expression from figure

$Y = \overline{\bar{A}.\bar{B}} = \bar{\bar{A}} + \bar{\bar{B}} = A + B$

This combination of gates represent OR gate.