Implementing f(w1,w2,w3) Using 3-to-8 Binary Decoder & OR Gate

[shamieh]

Show how the function f(w1,w2,w3,) = Ʃm(0,1,2,4,7) can be implemented using a 3-to-8 binary decoder and an OR gate (hint: look at MUX built using a decoder and figure out how to remove the and gates.

Um. Yea. Help.(Speechless)

 

[Evgeny.Makarov]

Well, you've got beyond my personal knowledge of circuits. If there is somebody more knowledgeable on this forum, fine. Otherwise, I am afraid I can't help you with definitions. If you want help, you'll have to provide definitions of new concepts (in this case: binary decoder and MUX) and briefly explain what kind of beast they are. Then I can only help with common mathematical sense.

 

[shamieh]

Ok I will see what I can do.

 

[shamieh]

Here are some of the solutions. You think you can decipher what is going on in #1 and #2? Like #1 I understand until it gets to the 1 --> E part... Like what does that mean? E means Encoder? or?

http://afsana4.weebly.com/uploads/9/4/7/5/9475645/solution_of_homwwork_8.pdf

And the #2 I don't know logically what is going on

 

[shamieh]

so I figured out how to get the function or the output. But Now I don't know hwo they are getting the outupt

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how would i minimize w!w3! + w2w3! + w1!w2