Q136 / 180 · NEET 2015 (Phase 1) · Physics

Which logic gate is represented by the following combination of logic gates?

A
OR
B
NAND
Correct answer
C
AND
D
NOR

Solution

y_{1} = \bar{A}, y_{2} = \bar{B}

y = \bar{y_{1} + y_{2}} = \bar{\bar{A} + \bar{B}}

Using De-Morgan's theorem

y = \bar{\bar{A} + \bar{B}} = A . B

So, it is AND gate
Truth table:

A	B	$y_{1}$	$y_{2}$	y
0	0	1	1	0
0	1	1	0	0
1	0	0	1	0
1	1	0	0	1

Hence, the correct answer is option: 'C'.

Relevant Questions

The output of the given logic implementation is similar to the output of an/a _____ gate.2025Logic gates
A logic circuit provides the output as per the following truth table : {array}{|l|l|l|} & B & Y \\ 0 & 0 & 1 \\0 & 1 & 0 \\1 & 0 & 1 \\1 & 12024Logic gates
The output ( ) of the given logic gate is similar to the output of an/a2024Logic gates
When the output of an OR gate is applied as input to a NOT gate, then the combination acts as a2024 (Re-NEET)Logic gates
The output for the inputs and of the given logic circuit is :2024 (Re-NEET)Logic gates
For the following logic circuit, the truth table is:2023 (All India)Logic gates