Connect with us

Question about implementing (boolean) function using multiplexer?

Discussion in 'Electronics Homework Help' started by s3a, Jun 16, 2018.

Scroll to continue with content
  1. s3a

    s3a

    1
    0
    Jun 16, 2018
    Hello, everyone.

    I'm studying a past exam, and I'm stuck on something, but I'm thinking that the solution of the exam for the question I'm doing (Question 1 -- 3. a.k.a. Question 1 -- c.) has a (minor) error in it.

    Question 1 -- 3. a.k.a. Question 1 -- c.:
    https://www.docdroid.net/IeyzXy3/question-1-3-aka-question-1-c.pdf

    Its provided solution:
    https://www.docdroid.net/vNlE9vP/thesolution.pdf

    My question:
    Should the part with the (4-1) MUX drawing where there is a C be a C', instead? (I know this may seem like a small question, but I just want to make sure that I'm not misunderstanding anything.)

    Any input would be greatly appreciated!
     
  2. Laplace

    Laplace

    1,252
    184
    Apr 4, 2010
    I used Logisim to verify the K-map. The output for the selection A=1, B=1, certainly seems to match C' so I believe you are correct.
     

    Attached Files:

  3. Ratch

    Ratch

    1,093
    334
    Mar 10, 2013
    Boolean expression not fully reduced.

    A'B'+ABC'+AB'D=A'B'+ABC'+B'D

    because

    A'B'+ABC'+AB'D =
    A'B'(1+D)+ABC'+AB'D=
    A'B'+A'B'D+ABC'+AB'D=
    A'B'+ABC'+A'B'D+AB'D=
    A'B'+ABC'+B'D(A+A')=
    A'B'+ABC'+B'D

    Ratch
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-