Basic RPN calculators usually have Swap, Rotate Up, Rotate Down, and "Repeat last value". This implementation is missing the rotate functions. The rotate functions, when combined with swap are sufficient to completely re-order the stack into any position you'd like.
Rotate Up
Remove the item the top of the stack
Insert it to the bottom of the stack
Ex: If the stack is
832
114
23
15
[R↑] will set the stack to
114
23
15
832
Rotate Down
Remove the item from the bottom of the stack
Insert it onto the top of the stack
Ex: If the stack is
832
114
23
15
[R↓] will set the stack to
15
832
114
23
Because of how these operations are frequently combined, I would like to see the secondary screen organized as
When combined with [Enter] to duplicate the number on the bottom of the stack we end up with a powerful calculator that effectively have unlimited accumulators. While basic calculators often have MR, MC, M+ and M- to provide a single off-screen accumulator, the rotate functions make it easy to work on multiple, unrelated computations simultaneously without clearing the screen
Basic RPN calculators usually have Swap, Rotate Up, Rotate Down, and "Repeat last value". This implementation is missing the rotate functions. The rotate functions, when combined with swap are sufficient to completely re-order the stack into any position you'd like.
Rotate Up
Ex: If the stack is
[R↑] will set the stack to
Rotate Down
Ex: If the stack is
[R↓] will set the stack to
Because of how these operations are frequently combined, I would like to see the secondary screen organized as
But if it's important for muscle memory to keep the existing buttons where they are, I think this would also work well:
Example Usage. Sort the stack by numerically:
[ R↑ ][ ↑↓ ][ R↓ ][ ↑↓ ][ R↓ ][ R↓ ][ ↑↓ ][ R↓ ][ R↓ ]
results inWhen combined with
[Enter]
to duplicate the number on the bottom of the stack we end up with a powerful calculator that effectively have unlimited accumulators. While basic calculators often haveMR
,MC
,M+
andM-
to provide a single off-screen accumulator, the rotate functions make it easy to work on multiple, unrelated computations simultaneously without clearing the screen