Calculator 1.0

-Simple calculator.
-Easy to use.
-Higher flixibility with command promot.
-Designed to be used by chemists graduate and undergraduate students.
-Contain most functions used by chemists.
-Contains most physical constants in use.
-Allow to be used with only keyboard to increase flixibility, because flixibility and speed is very important, also can be used with mouse only.
-All you need to do is to remember some commands and the calculator will be very easy to use with time.
-You don`t know how much it flixible.
-In the first use you will use mouse keyboard much but with time you will remember some commands and you will only use command promot