Introduction and Thankyou
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07-23-2017, 03:18 AM
(This post was last modified: 07-23-2017 03:22 AM by bshoring.)
Post: #21
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RE: Introduction and Thankyou
(07-18-2017 11:56 AM)Zac Bruce Wrote: Hi all,Hi Zac, Thanks for your introduction. It is very heartening to me to see a young person, my grandson's age, interested in HP calculators and RPN. I've tried to introduce RPN to a few people your age, but they didn't seem too interested. I really appreciate your interest and excitement. You've no doubt heard a little about the HP-35, which was the little marvel that started all of this in 1972, although there was a big desktop calculator/computer by HP in 1968 that inspired the HP-35. I was already working in the insurance field when the HP-35 came out, and at $395 it cost 4 months rent, so I didn't buy it then, but have one now. I head some college guys actually sold their cars so they could get one of these magic machines. A year after the HP-35 came out, HP introduced the first financial calculator, the HP-80 and the HP-12C is a direct descendant of that, but with many improvements. In 1973 memory was super expensive, so the HP-80 had to do all the financial calculations with just the 4 register stack, plus one storage register (exactly the same amount of memory as the HP-35). But it must have seemed a super computer when it came out. In between the HP-80 and the HP-12C, there were 7 more financial models (HP-70, HP-22, HP-27, HP-92, HP-37E, HP-38E and HP-38C). My personal favorite is the HP-38C, which the HP-12C is based on. It works almost the same as the 12C, but has a vertical format, LED display, and doesn't have built in bonds or depreciation. The 12C has a big advantage, though, as its batteries last for decades, whereas with the Spice Series 38C, the battery only lasts a few hours on one charge. If you are curious, there is a wonderful iPhone simulator for the 38C, called RPN-38 CX. Love hearing from you. I hope you can inspire some other younger folks to get into RPN. Regards, Bob |
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