On Monday, Jun 14, 2004, at 15:40 US/Pacific, Matthew Brush wrote: >> X/Y/Zmodem, kermit, SLIP, and PPP > Thanks, now I have some stuff to look up and maybe my opinion of > RS232(or PC serial or whatever it's properly named) will change. In general, you can just transmit 8bit binary bytes over an async connection. The assorted standards for avoiding that are due to conflicts with modems, dataswitches, software flow control, networks, PADs, terminal servers, and other things that MIGHT be in the "path" between the producer and consumer of the serial data. If you're talking about a PC and a micro plugged directly into the com port (or usb/commport adaptor), you PROBABLY don't need to worry about any of that. BillW -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu