ESBCalc is a Portable and Free Scientific Calculator Software that can be run from Windows. ESBCalc supports Infix Notation, Brackets, Scientific Functions (Trigonometric, Hyperbolic, Logarithmic "Base 10, Base 2 & Natural"), Memory, Paper Trail, Result History List and more. Includes support for Prefix functions as well. Most importantly, the Scientific Calculator is Portable, so you can take it with you wherever you go on a USB device.
Scientific Calculator - ESBCalc
Authors Website: http://esbconsult.com/esbcalc/esbcalc.htm
Download: Get this Scientific Calculator HERE