Some functions of a scientific input calculator include logarithms, trigonometric functions, exponential functions and floating-point arithmetic. An input calculator is a device that can complete simple and complex functions by inputting values and is also sometimes known as an input-output calculator or a functions calculator.
Graphing calculators offer a more complex set of functions than scientific calculators, allowing for multivariable functions. For example, a graphing input calculator can take the three variables for the Pythagorean theorem and output the solution. A graphing calculator can also solve differential equations and perform integration. Some input calculators can handle the functions for complex numbers, unit conversions and imaginary numbers.