The famous HP-35 was neither the calculator for kids nor the choice of poor guys.
And now look at these two RPN calculators introduced in 1975:
The Unitrex 90SC assembled in Hong Kong and not really a high-quality product.
The WhizKid Edition of the National Semiconductor Model 600 obviously named with kids in mind.
Well, times changed!
Have a great weekend,
Joerg
The Whiz Kid does it even without an ENTER key - must be either witchcraft or a bit too poor ;)
(Well, I know you can start with a cleared calculator and use + to terminate the first number entry. If that little wizard comes to a point where it needs a single parenthesis, however, the end is near ... ;)
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
that beast)
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..
John Stark