On 07/18/2015 03:44 PM, Dennis Lee Bieber wrote: > The new units (HP28, 48, 49, 50, etc.) no longer use the 4-register > stack; the stack is whatever is available in memory. As a result, the Roll > instructions now need an argument for how many stack entries are in play. > > The HP50g has a bit of a sluggish response compared to the 48sx [which > is not equivalent to a 48g]. Might be since the 48sx is still a SATURN > hardware processor. The 50g is an underclocked (for battery life) ARM, > running a SATURN emulator, with the emulator running the RPL/RPN user > interface (there are packages that let one program in SYSRPL [which > bypasses all the user level data checks, so if one knows the data on the > stack is good, one can speed up subsequent operations], SATURN assembly, > AND ARM assembly). > > For $20 or so one can get the HP Prime as an Android app.
My list of must-have android apps on my phone and tablet include Droid48, which is an android port of X48. Runs the original firmware and everything. Works very well for me. Of course I also use my real HP 48 on regular basis. The poor thing is 20 years old now but still the most useful calculator I've ever owned. I get lost on calculators without a stack and RPN. Had a debate with m boss over RPN though. He claimed it was just HP's engineers being lazy. For me RPN on a stack is faster for me than a normal calculator because it's closer to how my brain does math--you have to manually do order of operations on paper. Just the other day I learned how to implement custom units on my hp 48 and have them automatically convert to other units. Very cool. -- https://mail.python.org/mailman/listinfo/python-list
