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TTCalc is a mathematical calculator that features a well structured graphical interface and is very easy to use. TTCal is composed of a standard scientific calculator and variable, functions, precision and display configuration tabs. TTCalc has a nice user interface, formulas for calculating can be inserted by using a keyboard or a mouse, the result is automatically shown in a second window without using any additional keys such as 'equal'.

TTCalc possess trigonometric functions, inverse trigonometric functions, hyperbolic functions, logical operators, logarithms, functions for converting between degrees and radians and so on. Additionally, TTCalc allows the user to define his own variables and functions.

Calculations are performed by using floating point numbers with three kind of precision, the biggest has 288 bits for its mantissa and 96 bits for its exponent that is about 2.551...e+11925026709067095507636213441 with 85 valid decimal digits.

TTCalc independently allows to insert and display values with the base (radix) from two to sixteen.