This calculator allows you to use brackets and infix notation to perform trigonometric, logorithmic, and hyperbolic calculations (including base 10, base 2, and natural). It also offers a “paper trail” that retains the history of your mathematical session (which can be ported over to the Clipboard for easy printing). This function can be toggled off for a more compact appearance.
–Leigh Anne Jones  

Version: 6 
Price: Free  
Operating Systems: Windows NT, Windows 95, Windows 98, Windows 2000,
Windows 9.x, Windows Me, Windows XP, Windows Vista 

Go to the download page now:,61633/description.html?tk=nl_ddxdwn