C51定时闹钟程序 #include//头文件#include#defineucharunsignedchar//宏定义#defineuintunsignedintsbitkey1=P3^5;//位声明sbitkey2=P3^6;sbitkey3=P3^7;sbitfmq=P2^0;ucharcodetable[]={0x3f... 2011-03-31 51单片机定时闹钟程序时钟程序