Calculator for your everyday calculations Calculator is designed to look and operate exactly like a real hand-held calculator. It has all the standard scientific functions, unit conversions and constants. You can choose from a number of display styles and formats. It also supports binary, octal and hexadecimal calculations and has. Calculator is easy to use. Scientific Calculator includes the following features: 1- Traditional algebraic or operation 2- Unit conversions 3- Percentages 4- Binary, octal, and hexadecimal is easy to use 5- Trig functions in degrees, radians or grads 6- Scientific, engineering and fixed-point display modes 7- External keyboard support