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.