 | | Re: Purimish fun —Susan Hoover
| | | | (...) HP was not the only manufacturer of RPN calculators; I remember using a National Semiconductor RPN calc in the mid-70's. See (URL) for more non-HP RPN calcs. I tried to find the patent for RPN calcs on both (URL) and (URL), but neither one (...) (25 years ago, 27-Mar-00, to lugnet.off-topic.fun)
| | | | | | | | | | Re: Purimish fun —Susan Hoover
| | | | | Bad form, replying to my own post, but... (...) (URL) has the history from the HP viewpoint. (25 years ago, 27-Mar-00, to lugnet.off-topic.fun)
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