HP 20b Business Consultant Quick Start Manual page 43

To input current data, enter a number followed by the TVM key for the required
item. To calculate an unknown value, enter all known values and press the key of
the item you want solved. For a TVM example, see Table 4-4.
Table 4-3 TVM Keys
Keys
N
^
Y
V
M
[
Description
Stores or calculates the number of payments or
compounding periods (N).
Multiplies a value by the number of payments per year and
stores as N .
Stores or calculates the nominal annual interest rate as a
percentage.
Stores or calculates the present value (PV). To a lender or
borrower, PV is the amount of a loan; to an investor, PV is
the initial investment. PV always occurs at the beginning of
the first period.
Stores or calculates the dollar amount of each periodic
payment (PMT). Payments can occur at the beginning or
end of each compounding period.
Stores or calculates the number of payments or
compounding periods per year.
43
Time Value of Money