>  If one displays a pattern such that each signal bit is displayed in a
>different scan line, then bits will arrive at between 15 and 65 kHz
>depending on the scan rate. A PIC can cope with this bit rate, including
>in bit-banging mode (which you would have to use anyway).


This seems spot on; the software for the watch definitely alternates
stripes.  Your suggestion intrigues me, but I'll have to do some serious
thinking to be able to picture what you are driving at!  Thanks for the
thoughts.

----------
Bruce Cannon
Style Management Systems
bcannon@jps.net
http://www.jps.net/bcannon
(510) 787-6870
1228 Ceres ST Crockett CA 94525

Remember: electronics is changing your world...for good!