Which of following logic gates provides output as 0 when both inp
| Which of following logic gates provides output as 0 when both inputs are same (either 0 or 1)?
A. XNOR
B. XOR
C. NOR
D. NAND
Please scroll down to see the correct answer and solution guide.
Right Answer is: B
SOLUTION
XOR GATE
Symbol:
Truth Table:
|
Input A |
Input B |
Output Y = A ⊕ B |
|
0 |
0 |
0 |
|
0 |
1 |
1 |
|
1 |
0 |
1 |
|
1 |
1 |
0 |
Output Equation: \(Y = {\bf{A}} \oplus {\bf{B}} = \bar AB + A\bar B\)
Key Points:
1) The output is low or '0' when both the inputs are the same. Hence XOR gate can be used to know whether two digital inputs are identical.
2) The output is high when both the inputs are different.
3) It is also called stair case switch.
4) It is mostly used in parity generation & detection.
5) 4 NAND & 5 NOR logic gates required for realization of XOR gate .
