Good find, I'll forward the link on to the apprentices at work, as a=20 handy reference guide. Sadly, none of the apprentices are actually interested in electronics,=20 just do enough to pass TAFE and then forget about it all. In fact after=20 their yearly 6 week TAFE course, if I ask questions, I find they have=20 already flushed the knowledge from their memory bank. -- colin@btech-online.co.uk Web presence: www.btech-online.co.uk Hosted by: www.justhost.com.au This email is to be considered private if addressed to a named =20 individual or Personnel Department, and public if addressed to a blog, =20 forum or news article. __________________________________ Sent from eM Client | www.emclient.com --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .