12864多级菜单_调试通过源程序，基于51系列单片机，系统功能十分强大，可实现显示时间，日期以及记分器，设定密码等操作。-12864 multi-level menu _ debug through the source, based on the 51 series microcontroller, the system function is very powerful and can display time, date, and scoring device, set password