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Labelling a Circuit Diagram

  1. Oct 21, 2014 #1
    1. The problem statement, all variables and given/known data

    2xAIGg0.png

    2. Relevant equations


    3. The attempt at a solution

    kTJ63CD.jpg

    The multiplexer that is closest to the top of the page has ~x3 as an input but I am not allowed to use the negation of a logical variable as an input. Any way to get rid of this negation?
     
  2. jcsd
  3. Oct 23, 2014 #2
    It's tough to give you assistance on this without giving you too much of a clue.

    Notice that the only way you can invert a signal is by using a multiplexer. Also, the solution I found is based on [itex]x_3(\bar{x}_2+x_1) + \bar{x}_3x_2[/itex].
     
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