51单片机电子钟问题请教高手!答:///ds12887 made by smally/// ///2008 summer/// include<reg52.h> unsigned int i,j,k,l,m;unsigned char a,b1,b2,b3,b4,mode=4,count;unsigned char year1,year2,year3,year4,month1,month2,month3,month4,day,time1,time2,time3,time4,ale1,ale2,ale3,ale4,second1,second...