基于51单片机的6路抢答器 - 图文

}

}

if(key5 == 0) { }

if(key6 == 0) {

delay(8); if(key6 == 0) { }

number = 6;

number_display = number; delay(8); if(key5 == 0) { }

number = 5;

number_display = number;

}

if(number_display != 0) { } else {

return 0;

return number_display;

}

/*----------------------------------------------------------- 抢答复位函数

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------------------------------------------------------------*/ void reset_keyscan() {

if(reset == 0) {

delay(8); if(reset == 0) {

number_display = 0;

second=10; } }

/*----------------------------------------------------------- 主函数

------------------------------------------------------------*/ void main() {

TMOD=0x01;

TH0=(65536-50000)/256; TL0=(65536-50000)%6; EA=1; ET0=1; TR0=0; P2=0x00; while(1) {

reset_keyscan();

start_keyscan();

}

if(jia==0&&a[number-1]<9)

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{

delay(10); while(jia==0)

display(number_display,second); a[number-1]=a[number-1]+1;

}

if(jian==0&&a[number-1]>0) {

delay(10);

while (jian==0)

display(number_display,second); a[number-1]=a[number-1]-1;

}

while(action) {

while(!key_scan8()) //无人抢答 { }

TR0 = 0; key7=0; delay(80);

display(number_display,second); if(second == 0) { }

second = 10; break;

display(number_display,second);

key7=1;

action = 0;

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}

}

}

break;

display(number_display,second);

/*----------------------------------------------------------- 定时中断

------------------------------------------------------------*/ void timer0() interrupt 1 {

TH0=(65536-50000)/256; TL0=(65536-50000)%6; timer0_count ++; if(timer0_count == 20) {

second --; timer0_count = 0;

if(second==0)

}

{

key7=0; delay(60); key7=1;

} }

第四章 系统调试

置系统调试包括硬件调试和软件调试，而且两者是密不可分的。我们设计好的硬件电路和软件程序，只有经过联合调试，才能验证其正确性；软硬件的配人情况以及是否达到设计任务的要求，也只有经过调试，才能发现问题并加以解决、完善，最终开发成实用产品。

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