I wanted to make a simple calculator, since none of the currently available on Picotron really worked for me.
This calculator has been lain out to match a standard number pad, so it should look and feel familiar to most people. Also, the colours that it displays are from the current theme that your system is using, so it shouldn't feel out of place on any system. You can also copy the output to the clipboard by clicking the output display. You can also do negative numbers with the minus key. For example, typing 10*-2 equals -20.
1.0 - Initial release