[Coco] TTL levels and the bit banger port.

[RJRTTY at aol.com]

In a message dated 7/23/2011 2:20:22 P.M.  Eastern Daylight Time, 
gheskett at wdtv.com writes:

>My card could make a  25 volt p-p 50 kilohertz sine wave with no evidence 
of 
>slew rate limits,  but the EMP from a nearby lightning strike, coming back 
>into the outputs  would kill it almost every time.  Now we're digital, 
lots 
>less  trouble.  


Hey all the alarms at the plant where I worked were once copper wires
stretching the length of the facility.   EVERY time a strong 
electrical storm hit us I would make a trip into town to pickup
a hand full of the lamp driver chips that were on the receiving
end of the alarm panel.   Now everything is fiber optics  and
life is a lot more boring and I couldn't be happier.....
 
Roy