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4029 and 4511, 2 digit up down counter

tkharoon

New Member
I have attached an image of the circuit below.

It is a up/down counter that counts from 0 to 99.

It works perfectly when counting down, but when counting up, it goes ..., 39, 30, 41, 42 ...

Any suggestions on how I could fix this.
 

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    Screenshot 2024-04-21 at 15.50.04.png
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