Question
Download Solution PDFThe Output of NAND Gate is low in case
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct option is 3
Concept:
NAND GATE
Symbol:
Truth Table:
|
Input A |
Input B |
Output \(Y = \overline {AB}\) |
|
0 |
0 |
1 |
|
0 |
1 |
1 |
|
1 |
0 |
1 |
|
1 |
1 |
0 |
Output Equation: \(Y = \overline {A.B} = \overline A + \overline B\)
Key Points:
1) If A is always High, the output is the inverted value of the other input B, i.e. B̅
2) The output is low only when both the inputs are high
3) It is a universal gate
|
A |
B |
EXOR |
EXNOR |
NAND |
NOR |
|
0 |
0 |
0 |
1 |
1 |
1 |
|
0 |
1 |
1 |
0 |
1 |
0 |
|
1 |
0 |
1 |
0 |
1 |
0 |
|
1 |
1 |
0 |
1 |
0 |
0 |
From the truth table when A = B = 0,Output Y = 1 for NAND and NOR gate
Also when A = B = 1, output Y = 0 for NAND and NOR gate
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