Allow the calculator to use RPN notation
I would recommend you design a feature into the calculator where users could make it behave like one of the classic Hewlett Packard calculators. I find the reverse polish notation to be much faster for carrying out computations.
Pierre-Philippe Martin commented
To me, this is the most important feature which should be added A.S.A.P.
I am happy to see that it is now under review.
RPN mode (commonly used by HP calculators) is more efficient than the usual entry mode. Add an option or button to switch to RPN mode.
can you please make it switchable to RPN?
Support RPN mode