(5 years and 2541 days ago)
The HP calculator was the darling in my engineering college, but I confess that I never liked it very much, just had the "enter" key and did not have the "="... Major fault ...
Nice photo by the way...
The use of RPN ( Reverse Polish Notation -- No equal)is something that took awhile to get used to but I am confused by calculator that have an equal button after using HP for 35 years
very pretty
Howdie stranger!
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