HP Business/Financial Calculator HP 10BII financial calculator offers more than 100 time-saving business functions. Calculates loan payments, interest rates, amortization, discounted cash flow analysis, interest rate conversions, standard deviation, percent, percent change, markup as a percent of cost price, margin as a percent of price and forecasting based on linear regression. Offers a 12-character LCD with adjustable contrast display, three-key memory and 15 memory-storage registers. Ideal for finance, accounting, real estate, math, statistics students, economics and business work. Auto powers off after 10 minutes.