At 09:50 AM 3/25/2011, Alex Harford wrote: >On Fri, Mar 25, 2011 at 7:48 AM, Dwayne Reid wrot= e: > > > > FWIW - what I did find was at > > . > >Looks like the file names were set to lower case: >http://www.edn.com/archives/1997/090197/images/17d20731.gif Thanks, Alex. Unfortunately, it looks as if someone converted the=20 files from whatever they were to GIF format - and used far too low a=20 resolution. I can't make out most of the text. I did figure out that the large chip in the middle is most likely a=20 4052 dual 4-1 mux but I can't figure out any of the resistor values=20 nor what the inverter-looking triangles are. Hopefully Bob has a better copy stashed somewhere. dwayne --=20 Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .