Farsight Calculator is a easy-to-use programmable calculator which allows you to save your calculating process as a program or function,and perform arithmetic operations in either RPN (Reverse Polish Notation) or ALG (Algebraic) mode.more than one hundred functions are supported, including algebraic, trigonometric, hyperbolic, date, statistical, and financial functions.In addition to Farsight Calculator contains a set of powerful tools,such as "Finance box","date calculations" and "Unit convertor" etc. Main Features 1.Programmable Create your own calculation program in a simple way. 2.RPN&ALG Mode Farsight Calculator can be set to perform arithmetic operations in either RPN (Reverse Polish Notation) or ALG (Algebraic) mode. 3.Date Calculations Determine information about a specific date, or calculate the date 90 days from today. 4.Financial Functions Calculate loan payments, depreciation, cash flows, and interest rate conversions. 5.Unit Conversions Over 100 units of measure in six categories makes converting easy. 6.Change Skin