#include<reg51.h>#define uchar unsigned char#define uint unsigned intsbit k1=P1^0;sbit k2=P1^1;sbit k3=P1^2;sbit k4=P1^3;sbit k5=P1^4;sbit k6=P1^5;sbit k7=P1^6;sbit k8=P1^7; //选手按键sbit beep=P3^6; //蜂鸣器uchar code tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77}; //0-9代码（共阴极）uchar shiwei,gewei,xuanshou,count,i,second;uchar score1,score2,score3,score4,score5,score6,score7,score8;//选手1~8的分数uint t,m,n,a,a1,a2,a3,a4,a5,a6,a7,a8;void Timer(){TMOD|=0x01;TH0=0xd8; //初值55536，计数10000次，每次1US，总计10msTL0=0xf0;IE=0x82; //这里是中断优先级控制EA=1（开总中断）,ET0=1（定时器0允许中断)，这里用定时器0来定时TR0=1;}void tim(void) interrupt 1 using 1 //为定时中断TR0{TH0=0xd8; //重新赋值TL0=0xf0;count++;if(count==100) //100*10ms=1秒{count=0;second--; //秒减1}}void delay(uint z) //延时函数{uint x,y;for(x=z;x>0;x--)for(y=110;y>0;y--);//延时1ms}void display (uchar shiwei,gewei,xuanshou) //显示函数{P2=0xfe; //打开显示时间十位的位选低电平有效1111 1110 P0=shiwei;//显示十位delay(5);P2=0xfd; //个位位选1111 1101P0=gewei;delay(5);P2=0xf7; //选手位选1111 0111P0=xuanshou;delay(5);}void dis(void)//调用显示函数{shiwei=tab[second/10];gewei=tab[second%10];xuanshou=tab[i];display (shiwei,gewei,xuanshou);}void init() //初始化函数{P2=0x04;//0000 0100P0=0x3f;//数码管共阴0011 1111显示0t=0;beep=0;//蜂鸣器i=0;second=29;score1=60;score2=60;score3=60;score4=60;score5=60;score6=60;score7=60;score8=60;a1=1;a2=1;a3=1;a4=1;a5=1;a6=1;a7=1;a8=1;}void main()//主函数{init();//调用初始化函数if(k==1){ m=0; if(k1==0) {delay(5);if(k1==0);while(!k1);beep=1;delay(500);beep=0;} // 违规抢答显示号码报警while(t){if(m==0) //开关，保证程序只执行一次{switch(t){case 1:{TR0=0;i=1;second=score1;beep=1;delay(500);beep=0;a1=0;a2=1;a3=1;a4=1;a5=1;a6=1;a7=1;a8=1;m=1;break; //有选手抢答时显示选手号码蜂鸣器响，时间为0，t和i对应}}} }if(k2==0) {delay(5);if(k1==0);while(!k1);t=2;beep=1;delay(500);beep=0;}if(k3==0) {delay(5);if(k1==0);while(!k1);t=3;beep=1;delay(500);beep=0;}if(k4==0) {delay(5);if(k1==0);while(!k1);t=4;beep=1;delay(500);beep=0;}if(k5==0) {delay(5);if(k1==0);while(!k1);t=5;beep=1;delay(500);beep=0;}if(k6==0) {delay(5);if(k1==0);while(!k1);t=6;beep=1;delay(500);beep=0;}if(k7==0) {delay(5);if(k1==0);while(!k1);t=7;beep=1;delay(500);beep=0;}if(k8==0) {delay(5);if(k1==0);while(!k1);t=8;beep=1;delay(500);beep=0;}}if(k==0){Timer();//中断定时器打开delay(10);while(!k);while(1){dis();m=0;n=0;if (second==29){beep=1;delay(500);beep=0;}if(second==0){TR0=0;n=1;if(k1==0){delay(5);if(k1==0);while(!k1);t=1;beep=1;delay(500);beep=0;} // 违规抢答显示号码报警if(k2==0){delay(5);if(k1==0);while(!k1);t=2;beep=1;delay(500);beep=0;}if(k3==0){delay(5);if(k1==0);while(!k1);t=3;beep=1;delay(500);beep=0;}if(k4==0){delay(5);if(k1==0);while(!k1);t=4;beep=1;delay(500);beep=0;}if(k5==0){delay(5);if(k1==0);while(!k1);t=5;beep=1;delay(500);beep=0;}if(k6==0){delay(5);if(k1==0);while(!k1);t=6;beep=1;delay(500);beep=0;}if(k7==0){delay(5);if(k1==0);while(!k1);t=7;beep=1;delay(500);beep=0;}if(k8==0){delay(5);if(k1==0);while(!k1);t=8;beep=1;delay(500);beep=0;}if(k==0){beep=1;delay(500);beep=0;second=29;TR0=1;m=1;}}//如果再次按下开始按钮，蜂鸣器响0。

5秒，定时器打开，从29开始倒计时if(n==0){if(k1==0) {delay(5);if(k1==0);while(!k1);t=1;} //正常抢答显示号码else if(k2==0) {delay(5);if(k2==0);while(!k2);t=2;}else if(k3==0) {delay(5);if(k3==0);while(!k2);t=3;}else if(k4==0) {delay(5);if(k4==0);while(!k2);t=4;}else if(k5==0) {delay(5);if(k5==0);while(!k2);t=5;}else if(k6==0) {delay(5);if(k6==0);while(!k2);t=6;}else if(k7==0) {delay(5);if(k7==0);while(!k2);t=7;}else if(k8==0) {delay(5);if(k8==0);while(!k2);t=8;}else if(k==0) {delay(5);if(k==0);while(!k);t=0;i=0;second=29;beep=1;delay(500);beep=0;TR0=1;}//从新开始，从新启动。

}while(t){if(m==0) //开关，保证程序只执行一次{switch(t){case 1:{TR0=0;i=1;second=0;beep=1;delay(500);beep=0;a1=0;a2=1;a3=1;a4=1;a5=1;a6=1;a7=1;a8=1;m=1;break; //有选手抢答时显示选手号码蜂鸣器响，时间为0，t和i对应}case 2:{TR0=0;i=2;second=0;beep=1;delay(500);beep=0;a2=0;a1=1;a3=1;a4=1;a5=1;a6=1;a7=1;a8=1;m=1;break;}case 3:{TR0=0;i=3;second=0;beep=1;delay(500);beep=0;a3=0;a1=1;a2=1;a4=1;a5=1;a6=1;a7=1;a8=1;m=1;break;}case 4:{TR0=0;i=4;second=0;beep=1;delay(500);beep=0;a4=0;a1=1;a2=1;a3=1;a5=1;a6=1;a7=1;a8=1;m=1;break;}case 5:{TR0=0;i=5;second=0;beep=1;delay(500);beep=0;a5=0;a1=1;a2=1;a3=1;a4=1;a6=1;a7=1;a8=1;m=1;break;}case 6:{TR0=0;i=6;second=0;beep=1;delay(500);beep=0;a6=0;a1=1;a2=1;a3=1;a4=1;a5=1;a7=1;a8=1;m=1;break;}case 7:{TR0=0;i=7;second=0;beep=1;delay(500);beep=0;a7=0;a1=1;a2=1;a3=1;a4=1;a5=1;a6=1;a8=1;m=1;break;}case 8:{TR0=0;i=8;second=0;beep=1;delay(500);beep=0;a8=0;a1=1;a2=1;a3=1;a4=1;a5=1;a6=1;a7=1;m=1;break;}}}if(a1==0) //选手1的分数{second=score1;dis();if(m1==0){delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score1+=5;}else if(m2==0) {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score1-=5;}dis();}else if(a2==0){ second=score2;dis();if(m1==0){delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score2+=5;}else if(m2==0) {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score2-=5;}dis();}else if(a3==0){ second=score3;dis();if(m1==0){delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score3+=5;}else if(m2==0) {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score3-=5;}second=score3;dis();}else if(a4==0){second=score4;dis();if(m1==0){delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score4+=5;}else if(m2==0) {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score4-=5;}second=score4;dis();}else if(a5==0){second=score5;dis();if(m1==0){delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score5+=5;}else if(m2==0) {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score5-=5;}second=score5;dis();}else if(a6==0){second=score6;dis();if(m1==0){delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score6+=5;}else if(m2==0) {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score6-=5;}second=score6;dis();}else if(a7==0){second=score7;dis();if(m1==0){delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score7+=5;}else if(m2==0) {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score7-=5;}second=score7;dis();}else if(a8==0){second=score8;dis();if(m1==0){delay(5);if(m1==0);while(!m1);beep=1;delay(100);beep=0;score8+=5;}else if(m2==0) {delay(5);if(m2==0);while(!m2);beep=1;delay(100);beep=0;score8-=5;}second=score8;dis();}if(k==0){i=0;t=0;second=29;beep=1;delay(500);beep=0;TR0=1;}while(!k);}}}}。