PC-1211, PC-1250, etc. TVM

[robve]

Thanks for sharing!

(03-30-2021 04:58 PM)Dave Britten Wrote:  I'm not sure if the Sharps use binary rather than decimal, but I did notice that solving for PMT in a problem where FV=0, then immediately solving for FV could yield small non-zero values on the order of 1E-5.

FYI. SHARP pocket computers use 10 digits BCD to display values and store values in variables and 12 digits internally to evaluate expressions.

For example (SQR is sqrt):

SQR 2 * SQR 2
2

X=SQR 2
X*X
1.999999999

There is a small penalty to use variables to store (temporary) results. It is sometimes beneficial to "inline" expressions to preserve or increase accuracy.

- Rob