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Memory recall button retrieves the number you have in memory and places it in the display field Math expression renderer, plots, unit converter, equation solver, complex numbers, calculation history. Memory plus button adds the number displayed to the contents of the memory

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Memory minus button subtracts the number displayed from the contents of the memory.

The original calculator was invented in the 17th century by a frenchman called blaise pascal

He was just 18 years old, and wanted to help his father do his tax calculations. A beautiful, free online scientific calculator with advanced features for evaluating percentages, fractions, exponential functions, logarithms, trigonometry, statistics, and more. Use the best online calculator for any math calculations on pc and smartphones The free calculator allows you to quickly and accurately perform arithmetic, calculate percentages, raise to a power or take a root

This free online calculator can be used for basic computations such as addition, subtraction, multiplication, division, and square roots. Use this basic calculator online for math with addition, subtraction, division and multiplication The calculator includes functions for square root, percentage, pi, exponents, powers and rounding. Use our free calculator online for quick and accurate math calculations on the go