help me please.....

Discussion in 'Homework Help' started by xinzlee, Dec 3, 2007.

  1. xinzlee

    Thread Starter Member

    Nov 19, 2007
    13
    0
    How to design with using several two input NAND gates to implement the function F=A+B+C............
     
  2. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    144
    Double NOT the function, and use DeMorgan's theorem to change the expression from OR to AND type. If you tie the inputs of a NAND gate together you get a NOT gate.

    Dave
     
  3. !!Miss.EE!!

    Active Member

    Oct 17, 2007
    38
    0
    design it with OR gates first then redesign it with NAND.
     
  4. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    144
    That is essentially what you are doing with DeMorgan's theorems.

    Dave
     
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