I've had a HP 32S rpn since 1989. I love rpn. It's so much simpler than algebraic once you learn to use it. The other nice thing is no one else ever uses my calculator.
As far as an interesting watch with some calculator functionality, I'd like one of these, a slide rule watch.
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Steve
'08 Boxster RS60 Spyder #0099/1960
- never named a car before, but this is Charlotte.
'88 targa
SOLD 2004 - gone but not forgotten