RPN83P: RPN calculator for TI-83+ TI-84+ inspired by HP-42S

[Eddie W. Shore]

If I didn't have a gray monochrome 84 Plus, I would have been an "excuse" to buy a white 84 Plus at Target. BTW, for those wanting to purchase an 84 Plus, there is a lot on sale used, almost no need to pay retail.

This is the best RPN application for the 84 Plus. I like the solid interface and how quickly and smoothly the app runs.

One thing to note: I think the arguments for polar/rectangular conversions are "reversed" from most RPN calculators:

Y-Stack: X or R
X-Stack: Y or theta

Examples (Degrees mode):

-2 ENTER 11 >POL
Expected: Y: -10.3048, X: 11.1803
Instead the results are: Y: 11.1803, X: 100.3048

30 ENTER 5 >REC
Excepted: Y: 2.5000, X: 4.3301
Instead the results are: Y: 29.8858, X: 2.6147