 The Museum of HP Calculators

HP Forum Archive 20

 HP 30b programs Interest Rate conversions Negative Periods per Year and Fractional Periods per yearMessage #1 Posted by gene wright on 2 May 2011, 2:53 p.m. These programs allow the use of negative values for "Periods per year" when converting interest rates. They also allow the use of fractional periods per year. End of period compounding assumed. First program: Computing the effective rate. Inputs: Nominal rate, =, number of periods. ```/ Ans ) Swap 1 + ) Swap Y^X 1 - Shift+Stop ``` When run from the program catalog, key 0.1224 = 2 +/- = = Result shown is 0.1346 2nd program: Effective rate to nominal rate. Inputs: Effective rate, =, number of periods. ```= = shift+UP 1 + ) Swap 1/x Y^X 1 - * Shift+STOP ``` Inputs: 0.1346 = 2 +/- = = Outputs 0.1224 Inputs: 0.1346 = 360 = 210 / = Outputs: 0.1310 Edited: 2 May 2011, 3:15 p.m.

 Re: HP 30b programs Interest Rate conversions Negative Periods per Year and Fractional Periods per yearMessage #2 Posted by Bart (UK) on 3 May 2011, 11:25 a.m.,in response to message #1 by gene wright Hi Gene, Are you going to put it in the articles area? That will make it easier to find in future :). Thanks edit: I see it's there now, thanks. Edited: 4 May 2011, 7:07 a.m. Go back to the main exhibit hall