ESBCalc Pro is a Enhanced Win32 Scientific Calculator with Infix Processing, Exponential Notation, Brackets, Scientific Functions, Memory, Optional Paper Trail, Printing, Result History List, Integrated Help and more. Functions include Trigonometric, Hyperbolic, Logarithmic - Base 10, Base 2 & Natural - Random Number and many more. Also includes expression editing and custom constants. Register only once for life of product.