Does anyone still make an RPN calculator? I dread the day that my 1984-vintage HP 15C dies. Once you go RPN, you never go back....
I have 3 HP 41’s. It’s just love. I fall asleep with it sometimes. I try to change the TV with it, too. It’s love I tell ya!!
That’s an actual screen shot of an HP11c calculator running on an iPhone. I bought it a few months ago for (I think) $10 — outstanding investment. It’s a complete simulation of the 11c which is quite an accomplishment, so the $10 is an incredible bargain.
I have both an 11c (about 1978) and a 12c (about 1980) — I’m with you, hate to think of the day they die. RPN is SO logical and easy to use. You’re right, it’s hard to go back.