HP 30b Business Professional, Быстрый старт, Страница: 21 / 40

Getting Started 15
order of operation, if you wish to override the left-to-right order of entry.
Keys and Functions
Table 1-3 describes the keys and their functions. Use this table for quick refer-
ence. For a complete list of functions, refer to the HP 30b Business Profes-
sional User’s Guide.
Table 1-3 Keys and Descriptions
Keys Description
N
Stores or calculates the number of payments or
compounding periods.
:^
Multiplies a value by the number of payments per year
and stores as N.
Y
Stores or calculates the nominal, annual interest rate.
:&
Interest Conversion menu. Used to convert between
Nominal (
Nom.%
) and Effective (
Eff.%
) interest rates given
compounding periods per year ( C/YR ).
V
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.
:?
Sets Begin mode ( Beg ). Payments occur at the beginning
of each compounding period.
M
Stores or calculates the amount of each periodic payment.