John, you lead me on the right path.
I never bothered to replace the uC on the breadboard ( I assumed it worked
due to the functioning numbers, and the fact that it took the program)
Replaced the uC, and BINGO!  we have a steady functioning tube counting from
0-9.

Thank you everyone for your help!  I have  a few new ideas to check in the
future, thanks to your suggestions.

WOOHOO!

Shane

On Wed, Jul 20, 2011 at 10:07 AM, John Rehwinkel <[email protected]> wrote:

> On 7/20/2011 9:07 AM, Shane Ellis wrote:
>
>> Unbelievable.  I yanked out the four data wires, (picaxe to 74141), double
>> checked them, and NOW, I get 4,5,6,7!!!!  What is going on!?
>>
> Sounds like the low 3 bits are connected correctly, and the high bit is not
> connected.  TTL chips like the 74141 will pull their inputs high if
> unconnected.
>
> - John KG4L
>
>
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