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Homework Help: Logic Gates and State Tables

  1. Sep 20, 2010 #1
    1. The problem statement, all variables and given/known data
    I have been asked to create a logic diagram and state table and state diagram for two equations, with two inputs and one output. The inputs are, x and y. the output is z.

    2. Relevant equations

    The two equations are:
    D(sub a) = x'y + xA
    D(sub b) = xB + xA
    z = B

    x' = x(not)

    3. The attempt at a solution

    The first link is my logic diagram:
    http://img405.imageshack.us/img405/4989/logicdiagram.png [Broken]

    This link is the state table I have started.
    http://img85.imageshack.us/img85/3339/statetable.png [Broken]
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Sep 20, 2010 #2


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    Staff: Mentor

    Looks like a good start. The only error that I see is you are inverting x in the first term of the 2nd FF (should be xB, but you show logic for x'B).
    Last edited by a moderator: May 4, 2017
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