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What was the first calculator with R-P and P-R keys?
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What was the first calculator with R-P and P-R keys?
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What was the first calculator with R-P and P-R keys?
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04-23-2022, 06:40 AM
Post: #5
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RE: What was the first calculator with R-P and P-R keys?
(04-22-2022 08:49 AM)EEVblog Wrote:(04-22-2022 08:36 AM)Didier Lachieze Wrote: I would say the HP-45 in 1973 with ->P and ->R as primary and secondary functions. Mine Compucorp 326 is from 1976 but how about Compucorp 320? The instruction brochure shows the date 1972 (invaluable KW archive): https://www.wass.net/manuals/Compucorp%20320.pdf Some memory refresh, Dave: EEVblog #663 0:15 https://youtu.be/ezr3CzGUVeQ KR P |
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| Messages In This Thread |
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What was the first calculator with R-P and P-R keys? - EEVblog - 04-22-2022, 08:23 AM
RE: What was the first calculator with R-P and P-R keys? - Didier Lachieze - 04-22-2022, 08:36 AM
RE: What was the first calculator with R-P and P-R keys? - EEVblog - 04-22-2022, 08:49 AM
RE: What was the first calculator with R-P and P-R keys? - pavel nemec cz - 04-23-2022 06:40 AM
RE: What was the first calculator with R-P and P-R keys? - EdS2 - 04-22-2022, 02:15 PM
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