Platinum calculator with 20 registers features more than 130 built-in functions and allows 80 different cash flows for internal rate of return and net present values. Calculates loan and mortgage payments, converts interest rates and figures bond prices and yields. Includes RPN, algebraic, programming, finance and statistic entry modes. Through keystroke programming, enter up to 400 keystrokes into memory and then execute with the push of a single button. Other functions include depreciation, percent change, cumulative statistical analysis, standard deviation, mean, weighted mean, linear regression, forecasting, correlation coefficient, date arithmetic, undo, backspace keys, and power off memory protection. Calculator automatically shuts off after 10 minutes of non-use. Calculator has a 1 line x 10 character, liquid crystal display (LCD). The enclosure material is made of plastic and brush aluminum and the key tops are made of plastic. Runs on one CR2032.