30B TVM slightly different results - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: 30B TVM slightly different results (/thread-215541.html) 30B TVM slightly different results - bill platt - 03-25-2012 Has anyone noticed that the 30B is about a penny or two different in payment results for a typical 100k loan? 12C, 10B, 27S/17Bii, 48G all give identical results, different from 30B. Re: 30B TVM slightly different results - David Griffith - 03-25-2012 There are several complaints about that bug on HP's own calculator forum at http://h30499.www3.hp.com/t5/Calculators/bd-p/bsc-408 Re: 30B TVM slightly different results - cyrille de BrĂ©bisson - 03-26-2012 Hello Quote: Has anyone noticed that the 30B is about a penny or two different in payment results for a typical 100k loan? Can you give one or 2 examples please? cyrille Re: 30B TVM slightly different results - bill platt - 03-26-2012 Hi Cyrille, Sure, here a couple. Thanks for asking :-) ``` END mode. N = 360. I/yr = 5.0% PV = 100,000. 30b -536.836041607 48G -536.821623012 12C(1985) -536.8216230 I/yr = 10.0% PV = 50,000. 30b -438.791093633 48G -438.785785044 12C(1985) -438.7857850 Switch to BEGIN mode: I/yr = 10.0% PV = 50,000. 30b -435.164720958 48G -435.159456242 12C(1985) -435.1594562 ``` Edited: 26 Mar 2012, 10:39 a.m. Re: 30B TVM slightly different results - peacecalc - 03-26-2012 Hello bill, I can't confirm your results. My HP 30b shows same results like my HP 50g and they are the same like your HP 48G and HP 12c shows. Maybe there is a slight amount in the FV store place after an calculation, so try to input a zero in FV before you perform the comparing calculations. Sincerely peacecalc Re: 30B TVM slightly different results - bill platt - 03-26-2012 THANKS! Now I feel compltely STUPID! There was "12" in the FV register. D'oh!