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Answer is provided as C. But D should be the answer. Please confirm

in Digital Logic by Active (4.7k points)
edited by | 109 views
0
I too got C
+1

Check this

0
it is C
0
Ok I will retry
0
Using truth table we get C, that's a good approach.

Once you try solving using expressions. See whats coming.
0
We have only variable and we are quick in adding so used that approach.
0
S1 = A ⊕ B and C1 = AB

 

S2 = S1 ⊕ C1

     = (  A ⊕ B ) ⊕ AB

     = (A ⊙ B). AB + (A ⊕ B). (AB)'

     = (AB + A' B'). AB + (AB' + A' B). (A' + B')

     = (AB ) + (AB' + A' B)

     = (AB ) + (AB' + A' B) + AB

    = A( B+B') + (A'+A) B = A + B

 

C2 = S1 . C1

     = (  A ⊕ B ) . AB

     = (AB' + A' B) . AB = 0

1 Answer

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C IS THE CORRECT
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