HP 2 Line Financial Calculator Silver HP-17BII For students and professionals in real estate, finance, accounting and business. The HP 17bII+ financial calculator is both powerful and easy-to-use. Quickly calculate loan payments, interest rates and conversions, standard deviation, percent, TVM, NPV, IRR, cash flows, bonds and more. Features 28KB of user memory, over 250 functions, RPN and Algebraic data entry, clock, appointments, calendar, HP solve application, menus prompts and messages.