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Here are some other problems you can solve that are just as easy with
the HP-80 (and just as tedious with conventional methods):
•
All
types
of
simple and compound
interest calculations
•
All
types of
percentage calculations
•
Statistical applications (mean and standard deviation)
•
All
types
of
present
value,
future
value,
and
effective
rate
calculations
•
Sum-of-the-digits amortization (finance charges, depreciation)
•
Add-on
interest to
effective annual
rate
conversion
•
Effective
yield calculations
•
Mortgage
calculations
•
Discounted
cash flow analyses
•
Bond price
and yield-to-maturity
calculations
•
Time interval,
future
date calculations
•
Linear regression
analysis (trend
line forecasting)
applications
•
Square
root
calculations
In addition to its more exotic features, the HP-80 is fast, accurate, and
convenient to use.
It
handles
numbers
as small as
10-
09
(that's a decimal
point followed by 98 zeros and a
1),
and numbers as large as 10
00
(1 followed by 99 zeros), automatically places the decimal
point,
and
allows you to round the display to settings ranging from zero
to
six
decimal places. It does
everything
a
conventional four-function desk
calculator does, too
.
Unlike Charles Lamb, HP-80 users may never produce works of
art as an outlet for job-related frustration. They may have to settle
for
something more modest-say president of the World Bank?
9
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