说明：  //本程序目前只用于单色液晶，消耗cpu极少，只需要通过判断有无按键才刷新显示，最好配合自己的一些gui函数。较消耗内存（需要存储菜单数据）结构非常简单 //只有两个函数菜单执行Menu_keyprocess 菜单显示ShowMenu
(/ / this procedure is currently used only monochrome LCD, consumption CPU rarely, and only needs to determine whether the key to refresh the display, preferably with some own function gui. A memory consumption (need to store data structure is very simple menu))