HP-65 and HP80 direct reduction loan - Printable Version +- HP Forums ( https://www.hpmuseum.org/forum)+-- Forum: HP Calculators (and very old HP Computers) ( /forum-3.html)+--- Forum: General Forum ( /forum-4.html)+--- Thread: HP-65 and HP80 direct reduction loan ( /thread-8694.html) |

HP-65 and HP80 direct reduction loan - Harald - 07-17-2017 08:57 PM
I have calculated loan payments with this Program on the HP65 and believe the results to be correct. However, when attempting to calculate the same using an HP80 I get different results. So I think I am not using the HP80 correctly. So, if I have a number of periodes, an interest rate, and the annuity, how can I calculate the ammount borrowed? For example: I have 12 payments a year for twenty years, 1,9% anual interest rate and 1200 Euros Anuity, on the 65 I would do this: 20 Enter 12 A 1.9 B 1200 D E C What do I do on the 80? Cheers, Harald RE: HP-65 and HP80 direct reduction loan - Gene - 07-17-2017 09:12 PM
This may help: HP 80 instructions on RSKEY.ORG RE: HP-65 and HP80 direct reduction loan - Harald - 07-17-2017 09:21 PM
(07-17-2017 09:12 PM)Gene Wrote: This may help: Thanks, I think that did help. I haven't done any financial calculations for that long, that I forgot that the interest rate is per payment periode on those machines, not per year... That probably is the mistake I made. |