Occasional obligatory re-reading Robert Pease, February 7th, 1994 What's All This Quality Stuff, Anyhow? http://electronicdesign.com/test-amp-measurement/whats-all-quality-stuff-an= yhow --=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 .