From the developer: "CalcPac RPN is a powerful business calculator that operates like the HP-12C. CalcPac RPN is fully programmable and has over 120 business functions and a printable tape. CalcPac RPN solves mortgage, loan, lease and savings problems, and generates financial graphics. CalcPac RPN can import and export data from applications such as Microsoft Excel. CalcPac RPN can also generate amortization and depreciation schedules and can produce graphics that can be transferred to other applications like Microsoft Word. CalcPac RPN can also be 'rolled up', minimized to the tray and includes 10 skins and special effects for an impressive customized appearance."