For novices, functions are one of the most intimidating features of OpenOffice.org's Calc. Newcomers quickly learn that functions are a main feature of spreadsheets, but there are almost four hundred, ...

An extended command-line calculator built with Python that supports both basic and advanced mathematical operations through a clean, menu-driven interface. This project is beginner-friendly while ...

The basic Calculator app that comes with iOS is good for simple calculations, and if you rotate your phone into landscape orientation, it even provides some rudimentary scientific-calculator functions ...