Minimization SOP K-Map 4 input

Discussion in 'Homework Help' started by Shamieh, Feb 13, 2014.

  1. Shamieh

    Thread Starter Member

    Oct 24, 2013
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    Was wondering if someone could check my work.

    q) Using KMAP write out the minimal SOP Sum of Products m(1,3,4,5,9,10,11,14,) + d(0)

    My solution: w~xy + x~z + ~w~y

    q2) Using KMAP write out the minimal Product of Sums equation \pi(3,4,5,7,8,12) + d(13)

    My solution: (~w + ~x + y) (w + ~z) (w + x + ~y)


    Thanks in advance.. You all are always very helpful.
     
    Last edited: Feb 13, 2014
  2. tshuck

    Well-Known Member

    Oct 18, 2012
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    Nope, without seeing what you did, we can't verify if you did it correctly. Provide a picture of your K-maps and groupings and we can...
     
  3. Shamieh

    Thread Starter Member

    Oct 24, 2013
    36
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    Oh. Sorry about that!

    SOP

    SOP.JPG


    POS
    POS.JPG
     
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  4. Shamieh

    Thread Starter Member

    Oct 24, 2013
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    Any idea? I'm about 91% sure I'm correct lol.
     
  5. tshuck

    Well-Known Member

    Oct 18, 2012
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    Your expression doesn't match with the K-maps you posted, did you make the K-maps, our did you derive the function from the K-map?

    Also, you should always list what the order of the variables is.
     
  6. Shamieh

    Thread Starter Member

    Oct 24, 2013
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    I used groupings to get the minimized function on the K-Map. What do you mean? I didn't make the K-MAPS they were already made, I just circled groupings for each and then put that corresponding term. Also, they are in order so I'm not quite sure what you are talking about? WX / YZ = x1,x2/x3,x4 essentially. So what do you mean exactly?
     
  7. Shamieh

    Thread Starter Member

    Oct 24, 2013
    36
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    '

    Tshuck I'm an idiot. I wrote the previous questions out wrong when I was telling you all because I read the column rows incorrectly. Thanks for pointing that out. As far as the grouping and terms I got.. Is that correct? Im going to edit my very first post right now so it will be clear what the question is stating, even know it;s visual
     
  8. WBahn

    Moderator

    Mar 31, 2012
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    What is this "+d(0)" and "+d(13)" that you have in there?

    Be explicit about your mappings -- don't assume that people that normally read left-to-right are going to assume the same mappings as people that normally read right-to-left.

    One simple way to do it, which usually works fine, is something like this:

    m => msb {wxyz} lsb
     
  9. tshuck

    Well-Known Member

    Oct 18, 2012
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    Don't care terms

    I usually write it as m(W,X,Y,Z) = 1,2,3,4,5, etc.
     
  10. Shamieh

    Thread Starter Member

    Oct 24, 2013
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    So is there anyone here who knows if my answer is correct? lol
     
  11. tshuck

    Well-Known Member

    Oct 18, 2012
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    That is correct.

    I would say you should check this one again...
     
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  12. tshuck

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    Oct 18, 2012
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    You could always check it yourself by writing out the truth table for the function you end up with and comparing it with the original...;)
     
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  13. Shamieh

    Thread Starter Member

    Oct 24, 2013
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    What other grouping could I possibly make though? I don't understand
     
  14. tshuck

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    Oct 18, 2012
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    It isn't the grouping, it's the interpretation of it.
     
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  15. Shamieh

    Thread Starter Member

    Oct 24, 2013
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    Editing. Be right back
     
  16. tshuck

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    Oct 18, 2012
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    These aren't even the same values...:confused:

    EDIT:Looks like you realized this as I was posting....
     
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  17. WBahn

    Moderator

    Mar 31, 2012
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    I'm not going to bother even looking until you specify your mappings.
     
  18. Shamieh

    Thread Starter Member

    Oct 24, 2013
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    Sorry was looking at the wrong problem for a second...But I am completely lost on what you mean
     
  19. tshuck

    Well-Known Member

    Oct 18, 2012
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    What expression do you get from
    [​IMG]

    You got
     
    • kmap.png
      kmap.png
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      237.8 KB
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  20. Shamieh

    Thread Starter Member

    Oct 24, 2013
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    What? WX is my columns and YZ is the rows...
     
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