Question

Identify the gate and match A, B, Y in bracket to check.
99971.jpg

A
AND (A=1,B=1,Y=1)
B
OR (A=1,B=1,Y=0)
C
NOT (A=1,B=1,Y=1)
D
XOR (A=0,B=0,Y=0)
Solution
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The given diagrams involve 2 gates.
The first 1 is an AND gate followed by a NOT Gate, with the compliment of the output of first gate used as an input to the other gate which is NAND gate as NOT gate.
We consider the 4 combinations
A=1,B=1,AB=1,(AB)=0,¯AB=1,Y=0
A=1,B=0,AB=0,(AB)=1,¯AB=0,Y=1
A=1,B=0,AB=0,(AB)=1,¯AB=0,Y=1
A=0,B=0,AB=0,(AB)=1,¯AB=0,Y=1
The above configuration represents that of an AND gate.

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