John,
     Yep, I have found TTL to be very sensitive to no bypass caps. All=20
kinds of weird things happen. Sometimes the chip won't work. Other times=20
you get all kinds of noise or extra pulses. The higher the frequency the=20
weirder things become.
Thanks,
rich!

On 7/31/2014 10:55 PM, John Gardner wrote:
> ...It's surprising what doesn't work properly if you don't have any
> bypass caps.
>
> It's amazing what will fly at a few kHz. Sometimes not even then...

--=20
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