A)
A
B
Y
0
0
1
0
1
0
1
0
0
1
1
1
B)
A
B
Y
0
0
0
0
1
0
1
0
1
1
1
0
C)
A
B
Y
0
0
1
0
1
0
1
0
1
1
1
0
D)
A
B
Y
0
0
1
0
1
1
1
0
0
1
1
0
Correct Answer: A
Solution :
In the given system all four gate is NOR gate Truth TableA | B | \[(y'=\overline{A+B})\] | \[y''=(\overline{A+Y'})\] | \[y'''=(A+y'')\] | \[y=(\overline{y''+y'''})\] |
0 | 0 | 1 | 0 | 0 | 1 |
0 | 1 | 0 | 1 | 0 | 0 |
1 | 0 | 0 | 0 | 1 | 0 |
1 | 1 | 0 | 0 | 0 | 1 |
A | B | Y |
0 | 0 | 1 |
0 | 1 | 0 |
1 | 0 | 0 |
1 | 1 | 1 |
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