程序模拟显示出一个常见的机械表和一个电子表的界面，机械表通过指针的转动以显示时间的变化，电子表靠数字的跳动来变现时间。-Simulation shows that a common mechanical form and an electronic form interface, machine table, through the rotating pointer to indicate the changes in time, electronic watches with digital time of beating to realization.