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Calculator (Windows)
Calculator is a software calculator included in all versions of Windows.
==History==
A simple arithmetic calculator was first included with Windows 1.0.〔(Windows 1.01 - Graphical User Interface Gallery )〕
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, statistical functions such as single variable statistics and linear regression.
In Windows 98 and later, it uses an arbitrary-precision arithmetic library, replacing the standard IEEE floating point library.〔(The Old New Thing Blog: When you change the insides, nobody notices )〕 It offers bignum precision for basic operations (addition, subtraction, multiplication, division) and 32 digits of precision for advanced operations (square root, transcendental functions). The maximum number that can be represented on the Windows Calculator is currently 9.999999×109,999.
In Windows 2000, digit grouping is added. Degree and base settings are added to menu bar.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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