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The Rise Of Fake Casio Scientific Calculators
(hackaday.com)
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this post was submitted on 30 Dec 2025
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The best part about using an RPN calculator (I also had an HP) was that if someone asked if they could borrow it, I could tell them that if they call do 1+1 and get 2 on it, they could use it. No one ever was successful.
RPN is great though, it's so fast if you could quickly organize the order of operations.
Edit: RPN, not RPM.
You mean RPN, right? Reverse Polish Notation.
Dear Lord I'm not the only one wondering what RPM stands for!!
Lol yes. I knew what OP meant and assumed they were right and went with it.
I got used to RPN at University. Ever since, I literally struggle to do simple math with algebraic calculators, got an HP15X emulator in my phone, does all I need