7. What output does this logic circuit produce if A=0 & B=1 A – B -??
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0
Answer:
Correct option is
B
0,0
If A=0,B=1 for given logic circuit then value of x and y are respectively.
NOR
2
=
A+B
NOR
2
=
A+(A+B)
NOR
3
=
B+(A+B)
NAND
1
=
(NOR
2
)(NOR)
1
=
[A+(A+B)][B+(A+B)]
=
(2A+B)(A+2B)
=
(2A+B)
+
(A+2B)
=
B
+
2B
=0+0
=0
X=(NOR)
2
=
A+A+B
=
2A+B
=
B
=0
Explanation:
I think it is correct
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