I have two questions. The first is does anyone know of a pH transducer or
has anyone ever seen a pic project that monitored pH levels (within a range
of 6.2 to 7.4)?

The second is I would like to have a pic communicate with the parallel port
of a PC. Sending data to the pic is no problem, but I don't know how to send
data from the pic back to the pc. I'd like to be able to use one of the
printer control lines for the pic to let the computer know it is going to
send data and have both the pic and pc using the bi-directional parallel
port bits d0-d7. Does anyone have any C code that accomplishes something
similar?

Thanks for any help,
Bryan S Highland
bshighland@fau.campus.mci.net