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A question in building a circuit using 2 full adders

  1. Mar 7, 2008 #1
    which produces a sum of 2 bit numbers x0x1 y0y1
    the output is C (carry)
    S0S1

    the problem is i know how to build a truth table and a KARNO table
    and even how to build this circuit

    i know how to build a full adder circuit

    the problem is i dont know how to build this task using 2 full adders
     
  2. jcsd
  3. Mar 8, 2008 #2
    Chain the outputs with the clock cycle.


    In English, the clock is an input, for adder A, and itz carry is the input for adder B which holds the final solution.
     
    Last edited: Mar 8, 2008
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