> bi-directional bus (requires 4 wires plus ground). This way the master
unit
> such as a PC will be the only one sending on one line, and all the slave
> units respond on the other line. Again, though, you need to poll the
units
> or you will have collisions. You won't have any turn around time, though.

But if you poll you should not have any collisions at all!

Wouter

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu