Features : This calculator has a input mode of engineering calculator and is only on general calculator functions in functional.

Calculator functions as follows:
1. General calculation of Math.
2. Has parentheses priority function. (The parentheses need in pairs that allow to press operation of equal sign button.).
3. M +, M -,% , etc ..., and functions of general calculator.
4.The calculator screen will enter excessive Long formula that can scroll rollers by hand, and continue to enter infinitely long formula.
5.Color appearance calculator.

This calculator precautions as follows:
After turning on the calculator, the main program can be entered directly into the calculating formula.
This calculator is to enter the completely calculating formula, and just make sure the correct calculating formula ( parentheses need to in pairs and the rear of calculated symbol need to connect numbers) that can be directly calculated to obtain the answer by immediately pressed.
This input method of calculating formula is by parentheses, numbers and calculated symbols to randomly arranged and composed. Input length of the calculating formula is no limit.
If your input exceed the screen frame then just touch the screen and you can see part of the exceeded formula.
Unlike the restrictions of traditional calculator that only two numbers to calculate, so very convenient to use.
This calculator is taken into account most people that do not need to use part functions of engineering calculator, so just publish it for most people to use!

I wish you could use the calculator that can more convenient and happy!