Thanks for this Gary - great post.
I went through my final year of high school with my trusty HP-32E, and have never been able to calculate algebraically since. Instead, RPN logic is just so...well.. logical.
Thanks to Bert (Avandonk) and H0ughy here on IIS, my HP calculator collection has a few newer additions. This is part of my collection - those that work brilliantly still and can be used day to day. The rest still in the process of being re-built or fixed, and as soon as I have time I'll get them all working (hopefully) and into a glass cabinet.
Left to right are: HP-33E, HP-33C, HP-32E, HP-35, HP-12C, HP-41CV, HP-41CV, HP-38G and a Russian MK-61 from Elektronika - a functional early example of RPN calculatorness from behind the Iron Curtain. Awful keyboard I might add. I'd be double-checking every input. LOL
On its own is the HP-35 that Bert kindly donated - after a complete rebuild. It now works very well indeed.
LOVE my HP's!
Lastly - my current HP-35s which was released in 2007 to commemorate the 35th anniversary of the original HP-35. I use this now every day, and it's great calculator in its own right - it also brought back that familiar tactile firm but soft click in the keyboard that made the original HP's so much nicer to use than any Texas Instruments thingamajig at the time. It also brings back the old trapezoidal key face that supports four (and some five) functions (yellow, blue and alpha) per key. Very nice
