|Re: RPN for Kids and Poor Guys- What Memories!|
Message #3 Posted by John Stark on 5 Dec 2010, 12:03 p.m.,
in response to message #1 by Joerg Woerner
The Unitrex 90SC was my FIRST "Scientific" calculator, long before I could afford any of the HP line.
Considered it a vast upgrade from my K& E Slide Rule in 1976.
I have stuck with RPN in one form or another ever since.
My technical and economic migration took me through:
- National Semiconductor Mathemetician
- HP.25 (PROGRAMMABLE !)
- HP.29C (RETAINS PROGRAM IN MEMORY!)
- HP.35 (Traded HP.25 for it; liked classy case design)
- HP.67 (UNIVAC on a Stick and IN YOUR POCKET! - Still have
And a small but growing collection of Classics today.
Thanks so much for the memory refresh.
Sure is amazing how things have changed today.
Cheers to all..