Discussion in 'Homework Help' started by arcsky, May 19, 2009.

  1. arcsky

    Thread Starter Member

    Apr 17, 2009
    The Boolean function f (w, x, y, z) Ʃ(2, 3, 9, 11, 12, 13, 14, 15) is given.
    Realize the function with only a four-to-one (4:1) multiplex!

    Please help me with this task i really doesnt know how to solve it.
    I did a karudiagram i got: w´x´y+wx+wz dont know if thats needed...

    Thanks for help
  2. duffsterlp

    New Member

    May 21, 2009
    On the multiplexer, you have several signals: 4 input bits, 2 select bits and an output. For these sorts of problems, you have to hard code the input bits and select bits of the multiplexer as either the inputs (W, X, Y, Z) or 0 or 1. I did out the truth table for this function and chose W and X to be my select bits with W as the most significant bit. Comparing with the truth table, I found the input bits, from MSB to LSB, to be 1, Z, 0, Y.

    Hope that helped.