The ultimate free calculator

I have been searching for a comprehensive, multi-function scientific calculator that is ergnomical, efficient and free and THIS IS IT. All functions are displayed including scientific and trigonometric. With “x" to the “n” keys, log and e functions as well as a pi key, any calculations can be performed, no matter your discipline. A hidden gem: under the globe in the upper left corner is a list of constants from astronomy to nuclear particles to chemical values that you now have at your fingertips. This is a MUST to download.

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