KCalc has everything you would expect from a scientific calculator, plus:
- The usual functionality offered by most scientific calculators
- Trigonometric functions, logic operations, and statistical calculations.
- Cut and paste numbers from/into its display.
- Results-stack which lets you conveniently recall previous results.
- Configurable display colors and font.
- Configurable precision and the number of digits after the period.
- Great number of useful key-bindings, making it easy to use without a pointing device