Need a calculator for your flash drive (or computer) that is FREE, looks nice, continues to improve and is powerful? Then look no further… My “go to” calculator on my PC (and flash drive) is the free version of ESBCalc.
ESBCalc is a Freeware Scientific Calculator for Windows with Infix Notation, Brackets, Scientific Functions (Trigonometric, Hyperbolic, Logarithmic – including Base 10, Base 2 & Natural – plus more), Memory, Paper Trail, Result History List and more. v5 Includes support for Prefix functions so to evaluate log (10) you can enter log 10 rather than 10 log (which is the default behaviour)
Also includes customizing of the Colors’ & Fonts used, as well as customizing how the Hints (ToolTips) appear.
What I like about ESBCalc is that the developers continue to make improvements to this little gem and (as mentioned) there is a downloadable portable app version, as well. ESBCalc will run on any Windows version from Windows 98 to Windows 7.