>
> If the inputs/outputs are AC isolated, you can use a diode to do the
> switching.  Forward biased diode will allow AC through, reverse biased wi=
ll
> not.
>

I read about a great hackaday project that just used diodes to drive a
clock and clock display circuit. DDL - Diode Diode Logic
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.