How multiplexer works

Discussion in 'Homework Help' started by CSharpque, Nov 16, 2011.

  1. CSharpque

    Thread Starter Member

    Sep 23, 2011
    40
    0
    can anyone explain about multiplexer circuits. I known no of inputs, select line. but how that select line goes into the AND gate and combine?
     
  2. Georacer

    Moderator

    Nov 25, 2009
    5,142
    1,266
  3. samin

    Member

    Oct 14, 2011
    32
    6
    There are many different types of multiplexers. First it is important to know how a 2 input multiplexor works. I am guessing

    you do, but I will describe it briefly just in case. In a 2 input multiplexor, you have 2 inputs x0 and x1 and then a chooser bit

    c. If c=0 x0 comes out of the multiplexor, otherwise if c=1, x1 comes out.

    This operation is simply ANDing of inputs with select lines.
     
  4. CSharpque

    Thread Starter Member

    Sep 23, 2011
    40
    0
    can u have circuit of that multiplexer? i don't understand what u r saying.
     
  5. samin

    Member

    Oct 14, 2011
    32
    6
    Input C is the addressing input /chooser bit , which controls which of the two data inputs, X0 or X1, will be transmitted to the output.

    So .. If C=0 then X0 comes out of the multiplexor, otherwise if C=1, X1 comes out.

    :)
     
    • bb.jpg
      bb.jpg
      File size:
      24.2 KB
      Views:
      52
  6. crutschow

    Expert

    Mar 14, 2008
    12,977
    3,221
    That's for a digital multiplexer. An analog multiplexer that can transmit analog signals (as well as digital) is built with
    CMOS transmission gates to route the signal.
     
  7. CSharpque

    Thread Starter Member

    Sep 23, 2011
    40
    0
    k as u said if c=0 then x0 comes as output i understand but my question is that how i can decide whether x1 take 0 or x0 take 1 means gate with x0 takes input from the c is 0 or 1? same as gate with x1 takes input from the c is 0 or 1?
     
Loading...