Auto-rotate screen If turned on app will rotate screen with device 顯示「等於」按鈕 是否顯示「等於」按鈕 隱藏其他進位的數字 是否隱藏目前進位制以外的數字鍵 Show intermediate calculations in history If turned on all calculations will be shown in the history screen Result is calculated while typing If turned on calculations are done automatically while typing Prevent screen from fading If turned on screen will not fade while using the app