八路抢答器c语言程序.doc

//按钮P1；灯P0；数码管P2; P3^0主持人控制开关 #includereg52.h #define uc unsigned char sbit li1=P0^0; sbit li2=P0^1; sbit li3=P0^2; sbit li4=P0^3; sbit li5=P0^4; sbit li6=P0^5; sbit li7=P0^6; sbit li8=P0^7; //定义灯 sbit key1=P1^0; sbit key2=P1^1; sbit key3=P1^2; sbit key4=P1^3; sbit key5=P1^4; sbit key6=P1^5; sbit key7=P1^6; sbit key8=P1^7; //定义按钮 sbit zhuchi=P3^0; uc code table[]={0x3f,0x06,0x5b,0x4f,0x66, 0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71}; void delay(uc xms); void main() { P2=0x00; //共阴数码管全灭 while(1) { if(key1==0) //选手1 { delay(10); //去抖延时 if(key1==0) {P2=table[1];li1=0;} while(1) { if(zhuchi==0) {delay(10); if(zhuchi==0) {P2=0x00;li1=1;break;}} } } //选手1 if(key2==0) //选手2 { delay(10); //去抖延时 if(key2==0) {P2=table[2];li2=0;} while(1) { if(zhuchi==0) {delay(10); if(zhuchi==0) {P2=0x00;li2=1;break;}} } } //选手2 if(key3==0) //选手3 { delay(10); //去抖延时 if(key3==0) {P2=table[3];li3=0;} while(1) { if(zhuchi==0) {delay(10); if(zhuchi==0) {P2=0x00;li3=1;break;}} } } //选手3 if(key4==0) //选手4 { delay(10); //去抖延时 if(key4==0) {P2=table[4];li4=0;} while(1) { if(zhuchi==0) {delay(10); if(zhuchi==0) {P2=0x00;li4=1;break;}} } } //选手4 if(key5==0) //选手5 { delay(10); //去抖延时 if(key5==0) {P2=table[5];li5=0;} while(1) { if(zhuchi==0) {delay(10); if(zhuchi==0) {P2=0x00;li5=1;break;}} } } //选手5 if(key6==0) //选手6 { delay(10); //去抖延时 if(key6==0) {P2=table[6];li6=0;} while(1) { if(zhuchi==0) {delay(10); if(zhuchi==0) {P2=0x00;li6=1;break;}} } } //选手6