A circuit

Discussion in 'Homework Help' started by dnkschn, Apr 12, 2009.

  1. dnkschn

    Thread Starter New Member

    Mar 29, 2009
    8
    0
    I couldn't figure out how to design a circuit with this table:

    inputs a b c d and outputs k m
    a b c d _ k m
    1 0 0 0 _0 0
    1 0 0 1 _0 0
    1 0 1 0 _0 0
    1 0 1 1 _0 0
    1 1 0 0 _1 0
    1 1 0 1 _0 0
    1 1 1 0 _0 0
    1 1 1 1 _0 0
    0 1 1 1 _0 0
    0 1 1 0 _0 0
    0 1 0 1 _0 0
    0 1 0 0 _0 0
    0 0 1 1 _0 1
    0 0 1 0 _0 0
    0 0 0 1 _0 0
    0 0 0 0 _0 0

    i mean for example, if a=1 and and bcd=011, when bcd=100, k will be 1,m=0 ; when in opposite case,from bcd=100 to bcd=011, m will be 1,k=0.

    How can i make it?
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Take a look at the two instances where k and m are true. You only have to distinguish those two conditions.
     
  3. dsp_redux

    Active Member

    Apr 11, 2009
    182
    5
    Did you make a Karnaugh table of this to Find out the equations needed?
     
  4. dnkschn

    Thread Starter New Member

    Mar 29, 2009
    8
    0
    yeah ,i realized that i confused the input labels...
     
  5. italo

    New Member

    Nov 20, 2005
    205
    1
    TRY ONE OR GATE FOR ab and cd NAND GATE AND FEEDING A NAND GATE M=1
     
  6. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    6,357
    718
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