How do I make a sixty second timer which resets at 60 and goes to 00?

[JarJariggs]

I am trying to create a 60 second timer (file attached) which will reset at 60 and go to 00.

Currently, the two seven segment displays displaying the digits will go from 60 to 01. If I replace the output of U14D with that of U14C, it will reset from 59 to 00.

Any help is appreciated, thanks!

[WenR]

Hi JarJariggs

There is probably a small logic error somewhere in the reset. Your 0-9 counter works fine, so, when reseted, whocul go back to 0, not 1. Your design is similar to the one in the next page, maybe you can compare the logic in both circuits to help you find the error.

Page:    60 Second Timer

WenR