Accuracy of financial calculators 17BII, 19BII, and 30b

[Gerson W. Barbosa]

(10-22-2014 04:19 PM)Jeff_Kearns Wrote:  

(10-22-2014 05:16 AM)Gerson W. Barbosa Wrote:  HP-200LX TVM Application: 3.018 7862 9049 9193

Thanks Gerson. That raises the question: "Why is the 30B more accurate than the 19BII, since they both use 15 digits internal precision?" -- Jeff Kearns (Ottawa)

BTW (Off-Topic but I wanted to share): Today marks the first time ever that shots were fired in anger within the grounds of our Parliament Buildings in Ottawa. A sad day indeed in Canada. Breaking news at the moment...

Since the hp-30b has Canadian Mortgage built-in all calculations are carried out to 15 digits before the final rounding its result should be more accurate, I think. I don't know how this is done on the other calculator you've tried though. Starting at page 14-17 of the HP 200LX User's Guide there's an example on Canadian Mortgages.

Tuned to CNN right now. Really sorry about the sad news.

Gerson.