Outstanding software values for your Palm-powered PDA
All of the calculators offered on this site use the RPN method of data entry.
The first pocket calculator was developed by the Hewlett Packard company and
the RPN method is familiar to many people in the engineering and
scientific communities as the method used by all Hewlett Packard calculators
up until the mid 80s. Hewlett Packard still manufactures and sells the world's
most trusted financial calculator, the HP-12C, which was first introduced in
the early 1980s and is still the favorite of many professionals in the real
estate and financial industries.
If you're not familiar with RPN, why not begin by downloading a free copy of
our basic 5-function
calculator and then read through the short basic tutorial about performing simple calculations
with an RPN calculator. It won't cost you a cent, and you'll quickly learn
how powerful and easy the RPN method is.
Financial Calculators
Itty Bitty Computer offers two financial calculators, the
basic and
advanced. The
basic financial
calculator performs the five basic arithmetic functions of the
free calculator,
and has additional keys for solving problems involving what people in the
business world refer to as "the time value of money".
The advanced
financial calculator does all of that and adds an additional keyboard
for evaluating discounted cash flows, for those situations that involve
irregularly spaced disbursements and receipts. The advanced model also
offers some additional data editing features that are not part of the
basic model.
Statistical Calculator
For the benefit of people who have to frequently calculate basic statistical
measures like mean, median, mode, and standard deviation (of sample or
population), we offer the
basic statistical
calculator. This calculator will quickly calculate those numbers for
samples of up to 50 data points.
Five-function Color Calculator
Finally, if all you need is a basic 5-function calculator to replace the
four-function calculator that came with your PDA, we offer the
5-function
color calculator. This calculator is the same as our free calculator,
but offers an attractive graphic keypad with color-coded keys.
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