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#1




Odd/Even numbers counter.
Hello guys.
I need to design a counter that works as (even x=0/odd x=1) numbers counter. I,m having difficulties with state diagram.when I begin at 000,x=0 should I stay at this state and when x=0 should I go to 001. And what about the state after this,is it 001,x=0 I go to 010,when x=1 should I go to 011. Is that correct. Help me please. 
#3




do you mean that the states transitions I mentioned are correct.

#4




You can see the truth table of CD4518, and then talk about what you think.
CD4518 datasheet  to see the truth table on the first page.. 
#5




What does the prompt say? Since you are designing it, it could reasonably do any number of things and still count odd and even.
Does this count up? Down? How many bits (from your example, it looks like 3)? What approach? Synchronous? You need to be much more specific. 
#6




Quote:
Foe each state, describe what, precisely, being in that state means. A good way to do this is to finish the following statement for each state: If you tell me that I am in state xxx, then I know yyy about the system. 
#7




I am curious? What is "x"? Is it an input to the logic or an output from it?
And what is the three bit value you are showing? Is it the counter value? How does the circuit count? Is there a separate input to tell the circuit to count? Try defining the obvious state transitions, first. The others may become clearer after that. For example, if the counter value is 010 and x=0, what is the next state/value of the counter? Does it or does it not make sense to have the next state be 011? Just trying to some clarity of your problem.
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counter, numbers, odd or even 
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