Tuesday, February 23, 2016
The (online) Museum of HP Calculators
You either get it or you don't. Go ahead and ENTER
If you don't get it, here's a two page tutorial on RPN. Look, learning to use RPN (a) dead easy, and (b) akin to moving up to a well-built unix system after a serving hard time using MS-DOS on 5 1/2" floppies. You don't even need to buy an expensive HP calculator anymore, there are emulator apps for smart phones available. No, really, it is that good, and now it's even that inexpensive.