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Homework Help: Simple boolean rules

  1. Dec 19, 2008 #1
    boolean equation

    = A̅D + AB̅C̅D
    = D (A̅ + AB̅C̅) * rule A + A̅B = AB ?
    = A̅D + B̅C̅D

    am i using the rule correct or does A̅ + A make it a 1 and answer D(1)
  2. jcsd
  3. Dec 24, 2008 #2
    I think your rule on the second line should be:

    A or (not A) B = A or B
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