1I've been trying to make a timer that starts from 0 then counts down at 9 to 0. I've been struggling to make it. I made state tables and diagrams and for the flipflops, but when implementing to a simulator, it just doesn't give me the output I want.
I've tried making the don't cares (10-15) as 0 but still doesn't work.
Here's the state diagram:
Here's the state table:
I followed the kmap results in the simulator but still can't get it to work.
Here's my state table for the jk flipflop
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Simulation in proteus, it counts down from 0 to 9 but gets stuck at 3 and 2 going back and forth.
I got it working thank you all. a lot of misinputs was present in making the state table, glad I found it.
Final Results: