MOD 13 Asynchronous Down Counter

Hi All,

I know how to build the UP counter for MOD 13 but not Down counter. Please help to advice what should I do if I need to build MOD 13 Ripple Down Counter?

Please help.

Thanks a lot,

Best Regards,
Micheal

What happens if you take the Q-bar output of each stage in your mod13 up counter?