When I was a kid, my father had an electromechanical calculator that did division by successive subtractions. I once told it to divide by zero, so it kept subtracting zero. I finally unplugged it and left... Harold --=20 FCC Rules Updated Daily at http://www.hallikainen.com - Advertising opportunities available! Not sent from an iPhone. --=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 .