please help boolean expression

Discussion in 'Homework Help' started by JOHNYBOY80, Feb 8, 2007.

  1. JOHNYBOY80

    Thread Starter New Member

    Feb 7, 2007
    5
    0
    Hello,
    I am having so much trouble understanding how to simplify boolean expressions. I know how to use the k map but it is not helping me with this problem. i need to simplify an equation that i think is already reduced down it is
    AB+A'B'C
    i even tried the truth tables to see the output of the circuit and match the answers of the truth table to the other 5 possible answers that were given and i have no luck. I am lost. thanks in advance
    AB+AnBnC

    Cn C
    AnBn 0 1
    AnB 0 0
    AB 1 1
    ABn 0 0

    Then I get
    ABCn+ABC=AB+AnBnC
    I get the same answer I started out with
     
  2. rootboy

    Member

    Jan 4, 2007
    13
    0
    For what it's worth, I didn't come up with anything either.

    What were the other five answers?
     
  3. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    144
    Is this a duplicate thread of the above query? If so, let me know so we can keep all this in one place.

    Thanks.

    Dave
     
  4. JOHNYBOY80

    Thread Starter New Member

    Feb 7, 2007
    5
    0
    Yes it is i am in need of guidance.


    Thanks
    John
     
  5. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    144
    Can you post up the 5 answers to which you refer in the opening post?

    Dave
     
  6. JOHNYBOY80

    Thread Starter New Member

    Feb 7, 2007
    5
    0
    the answers are:
    AnBn+C
    AB+C
    ABC
    AnBnC
    A+B+C
     
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