The Calculator application in Mac OS X is pretty handy beyond the basic 10-key functions that most people use. As with many things from Apple you can make things much more complicated than the easy to use, basic screens that Apple provides. For example, did you know that Calculator can perform binary, hexadecimal, ASCII and Unicode conversions? To do so, click on the View menu and select Programmer (or use Command-3 to open the view. You can also stop carrying around that old TI-85 you’ve been using for years (to some degree) to calculate those random tangents from time to time. One of the best parts of Calculator is that…