(5 years and 2521 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!
If you want to rate this picture or participate in this contest, just:
LOGIN HERE or REGISTER FOR FREE