GATE Question Of The Day - Digital Electronics

In the following circuit, X is given by,




(A)        X =                 (B)        X = 
(C)        X =                                  (D)        X =    

One of the toughest question, will be ask in GATE 2013. 

19 comments:

  1. SRI REDDYSeptember 12, 2012 at 12:07 PM

    ans a

    ReplyDelete
  2. AnonymousSeptember 12, 2012 at 5:03 PM

    ans a

    ReplyDelete
  3. VamshiSeptember 12, 2012 at 6:33 PM

    a

    ReplyDelete
  4. soumyaSeptember 12, 2012 at 7:56 PM

    A

    ReplyDelete
  5. AnonymousSeptember 12, 2012 at 8:04 PM

    ans.a

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  6. SouravManiSeptember 12, 2012 at 9:25 PM

    i hope many aspirants do have the same confidence level. yes you are correct friends. its "A" the answer.

    ReplyDelete
  7. AnonymousSeptember 13, 2012 at 7:46 PM

    'A '

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  8. UnknownSeptember 14, 2012 at 12:11 AM

    c

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  9. venkatSeptember 14, 2012 at 10:40 AM

    Ans A

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  10. uvSeptember 14, 2012 at 11:05 AM

    From the first mux output Y=A Xor B and the second MUX output is X=YXorC. Substitute Y in X.
    => X=A Xor B Xor C .

    ReplyDelete
  11. AnonymousSeptember 14, 2012 at 12:37 PM

    plzz answer with explanation...

    ReplyDelete
  12. UnknownSeptember 14, 2012 at 3:21 PM

    option D

    ReplyDelete
  13. UnknownSeptember 16, 2012 at 11:06 PM

    a

    ReplyDelete
  14. AnonymousSeptember 17, 2012 at 11:23 AM

    ans c

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  15. dkSeptember 17, 2012 at 7:55 PM

    y=A'B'(0)+ AB'(1)+A'B(1)+AB(0)
    =A'B+AB'
    Now
    x=(A'B+AB')'C'(0)+(A'B+AB')C'(1)+ (A'B+AB')'C(1)+ (A'B+AB')C(0)
    = (A'B+AB')C'+ (A'B+AB')'C
    =A'BC'+AB'C'+A'B'C+ABC
    =ANSwer

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  16. UnknownSeptember 18, 2012 at 7:53 PM

    a

    ReplyDelete
  17. AnonymousSeptember 18, 2012 at 8:24 PM

    a

    ReplyDelete
  18. UnknownSeptember 22, 2012 at 9:13 PM

    A

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  19. peehu jainSeptember 26, 2012 at 6:52 PM

    A

    ReplyDelete