A Simple Calendar - it is an application. A public holiday of Japan can be displayed. With a menu button, it can change to a "one-month" display or a "12-month" display. If it is a "one-month" display with the right-and-left button which is downward, it is order 12 months. If it is a "12-month" display, about 10 income tax year can be displayed. It is above.