karnaugh map different value to fill in at common box

Thread Starter

clarelluffyjjang

Joined Jun 8, 2017
35
hi guys, i want to make a jk flip flop counter that can display 888123 so after coming out with the next state diagram i realise that my jk have 2 different value at common spot. how should i fill in in my kmap?
 

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MrChips

Joined Oct 2, 2009
34,860
You ought to quickly recognize that if the next state is 8 from the current state also 8, that the counter will be stuck in the state 8 forever.
So what is the solution? You cannot have the same state repeated.

Is this homework?
 

Thread Starter

clarelluffyjjang

Joined Jun 8, 2017
35
You ought to quickly recognize that if the next state is 8 from the current state also 8, that the counter will be stuck in the state 8 forever.
So what is the solution? You cannot have the same state repeated.

Is this homework?
we are doing a counter that needs to do like repeat 3 times of 8. any solution i can make it display 8 three times like using counter ?
 

WBahn

Joined Mar 31, 2012
32,905
we are doing a counter that needs to do like repeat 3 times of 8. any solution i can make it display 8 three times like using counter ?
There are a few ways to do it -- but the idea behind an assignment like this is for you to start developing problem solving skill, and us telling you how to do your homework will not go very far in that direction. So give some thought about various ways that you might approach it. You might ask yourself if you were tasked with putting up a card with a single digit on it, pulled from a stack of all ten digits, each time someone said, "Next," how might you do it. You get to keep track of whatever information you feel is important to let you know which card to select the next time you are told to go on to the next digit.
 

Thread Starter

clarelluffyjjang

Joined Jun 8, 2017
35
i have been trying for weeks and i really need some hints or tips. is it about filling two different number in kmap problem? or i should totally try a new approach or how? since it have two different value to display at the same box in kmap which should i fill in?
 

MrChips

Joined Oct 2, 2009
34,860
i have been trying for weeks and i really need some hints or tips. is it about filling two different number in kmap problem? or i should totally try a new approach or how? since it have two different value to display at the same box in kmap which should i fill in?
Forget about trying to fill two different numbers in the kmap.
Have you not figured out what you are doing wrong as yet?
 

WBahn

Joined Mar 31, 2012
32,905
i have been trying for weeks and i really need some hints or tips. is it about filling two different number in kmap problem? or i should totally try a new approach or how? since it have two different value to display at the same box in kmap which should i fill in?
But you clearly haven't even attempted to try the hints and tips I provided:

You might ask yourself if you were tasked with putting up a card with a single digit on it, pulled from a stack of all ten digits, each time someone said, "Next," how might you do it. You get to keep track of whatever information you feel is important to let you know which card to select the next time you are told to go on to the next digit.
Can you design a circuit that has three inputs and four outputs such that if the input is 011 the output is 0001 and if the input is 101 the output is 0011?
 

Thread Starter

clarelluffyjjang

Joined Jun 8, 2017
35
But you clearly haven't even attempted to try the hints and tips I provided:



Can you design a circuit that has three inputs and four outputs such that if the input is 011 the output is 0001 and if the input is 101 the output is 0011?
oh sorry at first didn’t understand what you meant it works already thanks for the help
 
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