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+--- 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:
HP 80 instructions on RSKEY.ORG
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.