Hi Eric;
 
 ES> Yes, you can address each data line individually.  There are also some
 ES> open collector outputs that are addressable on another register, but
 ES> don't think they could handle the current of a relay.  I have only
 
I was only going to use the parallel port line as a driver for the relay.
 
 ES> don't think they could handle the current of a relay.  I have only
 ES> worked with mechanical type relays, and typically just build a
 ES> Darlington amp out of a couple npn transistors to 
 ES> drive the relay.  You
 ES> can also use the chips like ULN2003 for this purpose.  I don't see why
 ES> you couldn't use the same technique to drive a solid state relay.  I
 
Could you give me some direction as to where I can get technical info on this 
aspect. I am a good chemist....pretty good salesman....not-a-bad 
programmer....but very limited when it comes to electronics (but learning 
fast :-)
 
I realize this is off topic though....Mr. Moderator
 
 ES> lines.  Do you have access to the web?  There is a 
 ES> good faq on parallel
 ES> ports on one site, I'll write it down and post it, or you could email
 ES> me at hbcsc388@huey.csun.edu and I'll attach it back to you.     Eric
 
Yes I do....my email address is jnbroadb@freenet.calgary.ab.ca
 
Your help is geatly appreciated.
 
Regards Jim
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