The calculator allows you to perform basic and complex mathematical operations such as modulus, square root, cube root, trigonometric, exponential, logarithmic, hyperbolic functions, etc. You can operate the calculator using the buttons provided on screen with your mouse. Be sure to press [C] when beginning a new calculation. Simply an equation using parenthesis and other mathematical operators. Use the predefined operations such as p (Pi), log, Exp to save time during calculation. Use memory function for calculating cumulative totals. [M+]: Will add displayed value to memory. [MR]: Will recall the value stored in memory. [M-]: Subtracts the displayed value from memory. Be sure select the angle unit (Deg or Rad) before beginning any calculation. By default angle unit is set as Degree Perform multiple operations together.