How do I implement an 8-1 multiplexer in a full adder?

Discussion in 'Homework Help' started by anaki73, Jul 24, 2006.

  1. anaki73

    anaki73 Thread Starter New Member

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    Help,

    I am having trouble with the following question :

    Implement a full adder using two 8-to-1 MUXes. Connect X,Y, and Cin to the control inputs of the MUXes and connect 1 or 0 to each data input.

    Do I need to wire the two muxes to a full adder circuit or do I need to make a full adder out of two multiplexers?

    Any help would be greatly appreciated

    Anaki
     
    #1
  2. n9352527

    n9352527 AAC Fanatic!

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    You need to implement the full adder by using the two muxes, not just wiring the muxes to a full adder. If you need a hint on how to achieve this, think of a full adder truth table, mapped to the muxes input and the correct output values are selected by three control lines, which are mapped full adder input.
     
    #2
  3. Dave

    Dave Retired Moderator

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    As a reference you may wish to refer to the following information on Full Adders.

    Dave
     
    #3
  4. baluraja

    baluraja New Member

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    Please show me the correct sketch!!!!
     
    #4
  5. Dave

    Dave Retired Moderator

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    I've got a better suggestion - you show us how you think the sketch will look and we'll give you some feedback on it.

    Dave
     
    #5
  6. Papabravo

    Papabravo AAC Fanatic!

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    Dave,

    Was it exclamation point #2, #3, or #4 that pushed you over the edge?
     
    #6
  7. recca02

    recca02 Senior Member

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    why is it that you do not wish to try or do no want to share your idea on the topic?
    this forum is to help u learn.
     
    #7
  8. JoeJester

    JoeJester AAC Fanatic!

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    recca,

    Attached is the schematic some have when they post their inquiry especially in the homework area.

    It's a shame.
     

    Attached Files:

    #8
  9. recca02

    recca02 Senior Member

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    well, MR. Joe,
    that speaks for itself. :p
     
    #9
  10. n9352527

    n9352527 AAC Fanatic!

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    Am I having a problem viewing the image or is the image supposed to be blank, which would make a perfect sense in this case as well? :p
     
    #10
  11. recca02

    recca02 Senior Member

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    or we can make it look the same as "the king is not wearing any clothes".:D
    at first i was expecting something in it:(:p

    (btw, its blank or r we both r not lucky enuf to be able to see it;))


    for the question: read the first reply to the op and ask any doubts u may have.
     
    #11
  12. JoeJester

    JoeJester AAC Fanatic!

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    The second part of your assessment is correct N9352527. :D
     
    #12
  13. Dave

    Dave Retired Moderator

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    Lol! I think it was #3! #4 was just adding salt to the wounds!

    Is that one of my designs! :D

    Very apt.

    Dave
     
    #13
  14. Papabravo

    Papabravo AAC Fanatic!

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    Looks like we just minted another Art History Major.
     
    #14
  15. JoeJester

    JoeJester AAC Fanatic!

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    In case you didn't recognize it .... that picture was two polar bear's getting it on ... in a white out. :D
     
    #15
  16. Dave

    Dave Retired Moderator

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    Discrete! :D

    Dave
     
    #16
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