Post Reply 
What was the first calculator with R-P and P-R keys?
04-23-2022, 06:40 AM
Post: #5
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.

Yep! Forgot about that.
1973 might be hard to beat?

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
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
RE: What was the first calculator with R-P and P-R keys? - pavel nemec cz - 04-23-2022 06:40 AM



User(s) browsing this thread: 3 Guest(s)