Windows 7 has had several classic programs such as Paint, WordPad, and Calculator updated with new features. The classic Windows Calculator has several enhancements that I find helpful as a developer. Calculator now includes Standard, Scientific, Programmer, and Statistics modes. If you need unit conversions you can use the new unit conversion view to convert between almost any unit of measure.
As a developer one of my personal favorites, is the addition of the Date Calculation view. Using this you can determine the difference between two dates, or add or subtract days to a date. This is quite helpful when debugging date routines in SQL and .NET.
Other features that may be helpful to developers is the addition of new binary operators (RoR, RoL, and Rsh). In programmer mode there is also an improved display of binary numbers. Binary numbers are shown grouped and key bit positions are indicated underneath.
