I'm tring do 2 forward 1 back counter. it is like 0-2-1-3-2-4-3-5...
I think I make some mistakes and I get mistakes. Can you show me what I did wrong ? I have to design my project on Proteus.
When I activate Proteus, I see 0-4-2-4 on the display.
Here are some of the works I've done
The counter can't be implemented with only 4 FF, you need a 5th FF that stores an up/down flag. Count 2 is e.g. followed either by 1 or 4. It's impossible to derive the next state from only the counter state.