Nand only expression

Discussion in 'Homework Help' started by Code, Nov 29, 2005.

  1. Code

    Thread Starter New Member

    Nov 29, 2005
    3
    0
    Hey,

    I want to convert the following expression to NAND2 form, so all terms are in the NAND form

    Z'W+Z'XY+WY'
    = W(Z'+Y')+Z'XY

    A partial solution:

    w (z'+y')+z'xy

    = (w (z'+y')+z'xy)''

    = (w' + (z'+y')' (z'xy)')'

    = w' + (z''y'') (z''+x'+y')

    = w' + (zy) (z+x'+y')


    Is that right so far?

    Is the next step the use of two bars over the (zy)(z+x'+y') terms?

    Thanks.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Hi,

    If you have a logic template, try working it out as signals applied to NAND gates. Not very elegant, but you can at least see how it works. MIL-STD 806C forever!

    They're easy to draw freehand, too.
     
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