一个单片机的菜单程序,可以方便的实现多级菜单的操作,滚屏等,本代码是在DOS下仿真的,可以容易的移植到单片机上.-A single-chip menu procedures, can facilitate the realization of multi-level menu operation, Scroll, etc., the code is in the simulation under DOS, you can easily migrate to the single-chip.