HP 30b HP 30b Business Professional Quick Start Guide - Page 21

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 reference. For a complete list of functions, refer to the HP 30b Business Professional User's Guide. Table 1-3 Keys and Descriptions Keys N :^ Y Description Stores or calculates the number of payments or compounding periods. Multiplies a value by the number of payments per year and stores as N. Stores or calculates the nominal, annual interest rate. :& V :? M Interest Conversion menu. Used to convert between Nominal (Nom.%) and Effective (Eff.%) interest rates given compounding periods per year (C/YR). 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. Stores or calculates the amount of each periodic payment. Getting Started 15