Digital circuits 2-input multiplexer implemented into an and gate

  1. How do you implement different gates by using a two-input multiplexer? What are the inputs supposed to be? How do you implement an AND gate, for example? An OR?
  2. jcsd
  3. There are different ways of building logic with a 2-to-1 multiplexer.

    One way is to built a 4-to-1 multiplexer with your 2-to-1 chips; once you have a 4-to-1 multiplexer, you can implement any logic function with 2 inputs.

    Food for thought: what happens if you choose your inputs to be:

    f(0,0) = 0
    f(0,1) = 1
    f(1,0) = 1
    f(1,1) = 0


    what will be the truth table for your inputs I0 and I1? which function f(x,y) are you implementing?

    Same process for AND / OR function.

    Attached Files:

    • a.bmp
      File size:
      20.4 KB
    Last edited: Feb 11, 2012
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