August 30th, 2007


Another HP Blast From The Past

It's The 35th Anniversary Of The HP-35

The Hewlett-Packard HP-35 was the first "real" pocket scientific calculator. Produced from 1972 to 1975, it cost a hefty $395, later reduced to $295 when the HP-45 came out.

It looks so Spartan today, with very little in the way of shifting to do multiple duty for the keys. It also brought the innovative -- and entirely logical, dammit! -- RPN Reverse Polish Notation to the small calculator world. RPN versus Algebraic would divide the scientific and business calculator worlds for a decade.

And HP calculators were built to last. If you have an HP-35 and its battery charger, it will probably still work on your desk, though I don't know that you can still get the NiCad battery packs for portable use. (There are links in the HP Museum article above to sources for repairing old battery packs.)

A Modern Update

We've seen so many calculator lines come and go over thirty-five years, that I have to give a hand to Hewlett-Packard for recognizing the importance of the HP-35 and coming out with a contemporary scientific calculator in its honor -- the HP-35s. Put the HP-35s up against even an HP-48GX and you'll realize that you've come home. With thirty years of HP calculator ownership myself, after inserting the batteries, I was up and running with the HP-35s without any difficulty, reveling in how some simple operations, like setting up FIX_4 notation, were still relatively simple, despite this age of calculator menus and oodles of features.

Me like it.

Confessions of an HP Calculator Nut

My, I do love my HP calculators. I own at least an HP-65 (bought 2/14/1977), HP-15C, HP-32S, HP-22S, HP-20S (for Mrs. Dr. Phil), HP-48GX (office), HP-48G (home), an HP-12C Twenty-Fifth Anniversary Model and now the HP-35s. They all work, and I use them for different tasks sometimes, because they all do things differently.

Dr. Phil
  • Current Mood
    indescribable indescribable

I Love Universities

A Diversity Of Ideas

Or why didn't I ever think that such a thing needed to be researched. To whit, in today's e-mailed university newsletter came this call:

A WMU research team from mechanical engineering and blindness and low vision studies needs to borrow hybrid vehicles, with or without their owners as drivers, for studies involving the detection of hybrid vehicles by pedestrians with impaired vision.

The Law of Unintended Consequences

Build a better car -- or at least one which is quieter and less polluting -- and risk running over people who don't know it's there. Yikes!

I love Systems and how everything interrelates with everything else. You can never just change one thing. Something to think about.

Dr. Phil
  • Current Mood
    thoughtful thoughtful