Sure, I remember the HP-01! It was HP's entry into the digital watch market. Had a little calculator (not RPN), with the key poker hidden in the band clasp. One of my friends in high school had one (that gives you some indication as to my age!). I'll bet if they put one out now, RPN wouldn't be a problem. I know the thoughts expressed here are my own because no one else would claim them! Don Harrington [log in to unmask] Boeing Commercial Airplane Group Phone: 206-931-4457 PO Box 3707 MS 5J-34 FAX: 206-931-2325 Seattle, WA 98124-2207