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This counter can count up or down if it's programmable in Zero in its respective count. It's important that Up pin is connected to Zero and the Down pin to One if you want it counts Up and vice versa.

Step 1: Counting Down

This counter counts down because it was programed and connected to Zero in its Down pin while its Up pin was connected to One.

Step 2: Counting Up

This counter counts up because it was programed and connected to Zero in its Up pin while its Down pin was connected to One.

Looks awesome! I just got out of my digital design class last fall, where we made counters out of JK blocks and and/or gates. You should wire it up and show it in action!!

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