Calculator 2+2=4

This calculator is unusual. It looks very different than any other calculator. It's powerful and very easy to use.

Look at the features:
- You can type in the entire expression.
- Scientific calculator with 30 operations.
- 30 digits accuracy.
- Backspace button.
- Parenthesis support.
- History of previous calculations.
- Scientific notation support.
- Degree and radian mode.
- Vector operations.
- Choose from 15 beautiful 3D graphics effects.