1、 #include#define uint unsigned int#define uchar unsigned charuchar a,temp,s1num,miao ,fen,shi;sbit s1=P37;sbit s2=P36;sbit s3=P35;uchar code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;void delay(uint z)uint x;uchar y;for(x=z;x0;x-)for(y=110;y0;y-); void init() P2=0xff;TMOD=0x01;TH0=(655
2、36-50000)/256;TL0=(65536-50000)%256;EA=1;ET0=1;TR0=1;void display(uchar shi,uchar fen,uchar miao) uchar miao0,miao1,fen0,fen1,shi0,shi1;miao1=miao/10;miao0=miao%10;fen1=fen/10;fen0=fen%10;shi1=shi/10;shi0=shi%10;P2=0xff;P0=tablemiao0;P2=0xfe;delay(1);P2=0xff;P0=tablemiao1;P2=0xfd;delay(1);P2=0xff;P0
3、=tablefen0;P2=0xf7;delay(1);P2=0xff;P0=tablefen1;P2=0xef;delay(1);P2=0xff;P0=tableshi0;P2=0xbf;delay(1);P2=0xff;P0=tableshi1;P2=0x7f;delay(1);void key()if(s1=0)delay(5);if(s1=0)s1num+;while(!s1);if(s1num=1)TR0=0;P2=0xfc;if(s1num=2)P2=0xe7;if(s1num=3)P2=0x3f;if(s1num=4)s1num=0;TR0=1; if(s1num!=0) if(
4、s2=0) delay(5);if(s2=0)while(!s2);if(s1num=1)miao+;if(miao=60)miao=0;if(s1num=2)fen+;if(fen=60)fen=0;if(s1num=3)shi+;if(shi=24)shi=0;if(s3=0)delay(5);if(s3=0)while(!s3);if(s1num=1)miao-;if(miao=-1)miao=59;if(s1num=2)fen-;if(fen=-1)fen=59;if(s1num=3)shi-;if(shi=-1)shi=23;void main()init();while(1) display(shi, fen,miao);key();void timer() interrupt 1TH0=(65536-50000)/256;TL0=(65536-50000)%256;a+ ;if(a=20)a=0;miao+;if(miao=60)miao=0;fen+;if(fen=60)fen=0;shi+;if(shi=24)shi=0;
