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How to design an XOR with these gates?

  1. Jan 31, 2013 #1
    I need to design an XOR with 2 NANDS, 1 NOR, and 3 inverters. Is it possible? I can't seem to find how to do it now.
  2. jcsd
  3. Jan 31, 2013 #2


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    Consider that the XOR of A and B can be written as:
    (A OR B) AND ~(A AND B)

    And recall that NOR is ~(OR) and that NAND is ~(AND) (NOT OR and NOT AND)

    And that ~(~(A)) is just A

    Then you can use up that exact quantity and type of gate!
    Last edited: Jan 31, 2013
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