HP-35s financial program



Anyone interested in an investment/cashflow program for the 35s?
Would feature multiple cashflows and calculate NPV, NFV, NUS and IRR.
(and yes, I probably should buy a financial calculator...)



I probably should buy a financial calculator...

Right, you can get a 12c for around $20. I at least got several...

Nevertheless, let's see your financial suite for the 35s... ;-)


You can email it to me at geodetic@sbcglobal.net


The program can be found at the articles section.





The above link is for a 38 step Accurate TVM program for the HP 35s developed by Miguel Toro last year. It works as-is (almost) on the 33s and 32sii and is remarkably accurate for very low periodic interest rates and many compounding periods.

I have not yet entered the 115 lines of your two programs and before I do, wonder if you could tell me what the specific advantages of your program(s) are compared to the TVM program. I suspect it has something to do with multiple cashflows, but I am curious to read your reply.

Best regards,

Jeff K.


Hello Jeff,

Please note that my program is NOT a Time Value of Money program (hmmm, strictly speaking it is...). The "normal" TVM is just a formula...(compounding or discounting continuing identical payments), where your link leads to a program that emulates the formula to increase the accuracy of the solution.
My program calculates the Net Present Value and Internal Rate of Return (and Net Future Value and Net Uniform Series).
This is used when making investment decisons, based on projects (or investment in equipment) requiring an initial investment I0/CF0 and then yielding multiple cashflows in the periods thereafter.
If the NPV is greater than zero it is worth doing the project/investment.


Edited: 10 Aug 2008, 5:28 a.m.

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