Three of the calculator is the emergence of useful calculator summarized in one. Touched calculator quickly appeared lightly input! Only also touch switching of the calculator! You do not need something memory function so the calculation results of each of the calculator can be used in the rest of the calculator! Switching at the touch of a button just to the calculator when it is in the way is using! Formula is displayed! Also think remains of editing of the equation! It can be switched to function calculator in the "fx" key! History function implementation. Rest assured return to the past of the formula or value by simply swiping the screen!