I made this as a learning lesson teaching myself the newer LSL command llDetectedTouch.
It's pretty basic calculator modeled after the calculator that comes in Windows Vista. But it does work.
All the buttons work just touch the numbers you need.
I did not write the scripts that do the actual calculation or the display scripts. Those were both open source scripts that I found in the SL forums and modified slightly to meet my needs.
Here are the credits for the open source scripts that I used:
XYText = Xylem Baysklef
XyyyyzText Board Control = Tub Dowler
Calculator script = Zindart Yossarian
I simply built and scripted the prim object and the controller to the buttons.
So that's why it's free! lol
It's already come in handy a couple times for me. Hope you enjoy!
Avalable at: http://www.xstreetsl.com/modules.php?name=Marketplace&file=item&ItemID=1102405