HP HP12C hp 12c_user's guide_English_E_HDPMBF12E44.pdf - Page 32

Section 3 Basic Financial Functions The Financial Registers In addition to the data storage registers discussed on page 23, the hp 12c has five special registers in which numbers are stored for financial calculations. These registers are designated n, i, PV, PMT, and FV. The first five keys on the top row of the calculator are used to store a number from the display into the corresponding register, to calculate the corresponding financial value and store the result into the corresponding register, or to display the number stored in the corresponding register.* Storing Numbers Into the Financial Registers To store a number into a financial register, key the number into the display, then press the corresponding key (n, ¼, $, P, or M). Displaying Numbers in the Financial Registers To display a number stored in a financial register, press : followed by the corresponding key.† * Which operation is performed when one of these keys is pressed depends upon the last preceding operation performed: If a number was just stored into a financial register (using n, ¼, $, P, M, A, or C), pressing one of these five keys calculates the corresponding value and stores it into the corresponding register; otherwise pressing one of these five keys merely stores the number from the display into the corresponding register. † It's good practice to press the corresponding key twice after :, since often you may want to calculate a financial value right after displaying another financial value. As indicated in the preceding footnote, if you wanted to display FV and then calculate PV, for example, you should press :MM$. If you didn't press M the second time, pressing $ would store FV in the PV register rather than calculating PV, and to calculate PV you would have to press $ again. 32 File name: hp 12c_user's guide_English_HDPMBF12E44 Printered Date: 2005/7/29 Page: 32 of 209 Dimension: 14.8 cm x 21 cm