It was first included with Windows 1.0 as a simple arithmetic calculator. In Windows 3.0, a Scientific mode was added, which included exponents and roots, logarithms, factorial-based functions, trigonometry (supports radian, degree and gradians angles), base conversions (2, 8, 10, 16), logic operations, Statistic functions such as single variable statistics and linear regression. In Windows 3.0 and Windows 3.1 its interface had a white background with 2D buttons. In Windows 2000, digit grouping is added. Degree and base settings are added to menu bar.