Best Calculator

This is the best scientific calculator.
Feature :
*Re-edited and re-callable expression.
*Results and expressions history.
*Decimal, binary, octal, and hexadecimal.
*The main memory and the memories 6 variables.
*Percentage
*Arithmetic, trigonometric, inverse trigonometric, exponential, logarithmic function, power, power root function, factorial, and forgiveness.
*DEG, RAD, GRA mode.
*Floating-point, fixed-point, the Scientific and Technicl display modes.
*Configurable decimal separator and grouping separator
*Configurable number of bits for base conversion
*BS button, the button DEL, INS button
*Landscape Mode