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#include<reg51.h>#define uchar unsigned charuchar duanma [10]={0xc0,0xf9,0xa4,0xb0,0x99, 0x92,0x82,0xf8,0x80,0x90};uchar weima[4]={0x01,0x02,0x04,0x08};uchar jishu1,jishu2,miao,haomiao;uchar xianshi[4]={0,0,0,0};bit kaiting = 0;sbit k1=P3^0;sbit k2=P3^1;void yanshi20ms (void){ uchar i,j; for (i=40;i>0;i--) for (j=250;j>0;j--);}void chushihua(void){TMOD=0x01;TH0=(65536-10000)/256;TL0=(65536-10000)%256;EA=1;ET0=1;TR0=1;}void main(void){ uchar saomiao; miao=0;haomiao=0; chushihua(); while(1) { P3=0xff; saomiao=P3; if(saomiao!=0xff) { yanshi20ms(); saomiao=P3; if(saomiao!=0xff) { if(k1==0) { kaiting=~kaiting; } if((k2==0)&&(kaiting==1)) { miao=0; haomiao=0; } while(P3!=0xff); } } } } void miaobiao(void)interrupt 1{TH0=(65536-10000)/256;TL0=(65536-10000)%256;xianshi[0]=duanma[miao/10];xianshi[1]=duanma[miao%10];xianshi[2]=duanma[haomiao/10];xianshi[3]=duanma[haomiao%10];jishu1++;if(jishu1==4)jishu1=0;P2=weima[jishu1];P1=xianshi[jishu1];jishu2++;if (jishu2==100) { jishu2=0; if(kaiting==0) haomiao++; if (haomiao==100) { haomiao=0; miao++; if(miao==60) miao=0; } }}
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