RPN Calculator with Solver

I would love to have an RPN calculator with a solver feature like the HP 17 B II or HP 19 or the HPCALC.exe works on xp or 32 bit win 7 that came with many HP computers. The equation solver renders the variables from a stored equation as assigned buttons and can solve for any of the variables with the others given values. The calculator can be RPN or conventional (parenthetical equations) for folks who prefer that. The calculator persona can be programmer, scientific, business / finance or possibly custom. The unit conversion feature that is already in toolbox can be integrated into this calculator as well. Some programmable features like functions or routines may be desirable.

 

That's a great suggestion, Robert -- I completely agree that an RPN calculator with a built-in solver would be a really valuable addition to Parallels Toolbox. The HP-style equation solver was incredibly efficient for quick variable-based problem solving, and it's surprising that modern calculator apps rarely include something similar.

It would be especially useful if Parallels implemented a hybrid mode -- allowing users to switch between RPN and algebraic input, while keeping variable memory and equation storage persistent across sessions.

I've been experimenting with a few web-based approaches to dynamic solvers and interactive calculation tools recently -- you can see an example of that concept calculator related concept here too which is Japanese targeted. A similar structure could be adapted nicely into a Toolbox module.
For reference: https://計算機-電卓.jp/
Hope the team considers this -- it would make Parallels Toolbox even more versatile for engineers, programmers, and finance users alike.