8路抢答器单片机控制系统

简介：
本项目设计了一款基于单片机控制的8路抢答器系统，能够同时支持八名参赛者进行快速、准确的抢答操作，并具备显示和声音提示功能。 ```c void beep() //有源蜂鸣器函数 { fmq = 0; beep_x(); } void beep_last()//最后一声特殊声调 { fmq = 0; delay(300); fmq = 1; } void LED() { led = 0; delay(150); led = 1; } void T0_time() interrupt 1 //定时器0中断函数_回答时间 { TH0=(65536-50000)/256; //50ms TL0=(65536-50000)%256; //马上重装初值，以免有误差 if(count_0==20) { count_0= 0; HuiDa_time--; if(HuiDa_time<=5) {if(HuiDa_time == 0){beep_last();} else{ beep();} } } count_0++; } void T1_time() interrupt 3 //定时器1中断函数_抢答时间 { TH1=(65536-50000)/256; //50us TL1=(65536-50000)%256; //马上重装初值，这样在后面调用beep()函数时就不会影响定时器的准确计时了 if(count_1==20) { count_1= 0; QiangDa_time--; if(QiangDa_time<=5) {if(QiangDa_time == 0){ beep_last();} else{beep();} } } count_1++; } void EX0_set_QiangDa_time() interrupt 0 //外中断0，设置抢答时间 { delay(10); //消抖一下 if(Key_set_Q==0) { beep(); while (1) { display_set(12, QiangDa_time_temp, 13); if(Key_Start == 0)//时间+1键 { delay(10); if(Key_Start == 0){QiangDa_time_temp++;if(QiangDa_time_temp==100) {QiangDa_time_temp=1;}} } while(!Key_Start);//等待按键释放 else if ( Key_Stop == 0 ) //时间-1键 { delay(10); if(Key_Stop == 0){ QiangDa_time_temp--;if(QiangDa_time_temp==0) {QiangDa_time_temp=99;}} } while(!Key_Stop);//等待按键释放 else if ( Key_Restart == 0) { beep(); break; } } } } void EX1_set_HuiDa_time() interrupt 2 //外中断1，设置回答时间 { delay(10); //消抖一下 if(Key_set_H==0) {beep(); while (1) { display_set(12,HuiDa_time_temp, 13); if(Key_Start == 0)// 时间+1键 { delay(10); if(Key_Start == 0){ HuiDa_time_temp++;if(HuiDa_time_temp==100) {HuiDa_time_temp=1;}} } while(!Key_Start); //等待按键释放 else if ( Key_Stop == 0 )// 时间-1键 { delay(10); if(Key_Stop == 0){ HuiDa_time_temp--;if(HuiDa_time_temp==0) {HuiDa_time_temp=99;}} } while(!Key_Stop); //等待按键释放 else if ( Key_Restart == 0) { beep(); break; } } } } ```