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John-Del[_2_] John-Del[_2_] is offline
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Default Vintage Hp Hewlett-Packard 25 Calculator with case and charger

On Saturday, August 11, 2018 at 1:54:08 PM UTC-4, Fox's Mercantile wrote:
Ya'll got me thinking.
I bought the HP 35 while I was working for TRW back around 1974.
Almost two weeks worth of pay and more than I paid for rent for
a month.
I also remember at the time, "Reverse Polish Notation? This is a
joke isn't it?"


Back when I was entering college, a scientific calculator was a requirement, and there were several on the recommended list. I narrowed them down to the Texas Instruments SR-51A and the HP (don't remember the model).

I bought the SR-51A because I never owned an RPN calculator and figured one less thing for me to learn would be a good thing. The TI was great until a redistributioner relieved me of it. I then bought the HP 34C and became used to the RPN method within minutes.

I still would love to have another SR-51A though. Aesthetically, he SR-51A was pretty where the 34C looked so damned professional. I guess it's off to ebay...