IT0=1; //开启外部中断0和1，用来控制强大时间和做题时间 EX0=1; IT1=1; EX1=1;
TMOD=0x11; //定时中断的初始化 TH0=(65536-50000)/256; TL0=(65536-50000)%6; TH1=(65536-50000)/256; TL1=(65536-50000)%6; TF1=0; ET1=1; TF0=0; EA=1; ET0=1;
xuanshou=10; //xuanshou=10 是让其显示“--” P2=0xff; P1_7=1;
while(1) //死循环 {
if(biaozhi!=3) //判断主持开始抢答键是否按下 {
if(P3_1==0) {
delay(2); if(P3_1==0) {
time[0]=bianliang1; //把调节好的抢答时间代入显示time[0] TR0=1;
biaozhi=1; xuanshou=11; }}}
if(P1_2==0) //判断是否按下调节时间 的确定按钮 {
delay(2); if(P1_2==0) {
TR0=0; TR1=0;
biaozhi=0; tiaoshi=0; xuanshou=10; }}
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if(P1_4==0) {
delay(150); if(P1_4==0) {
biaozhi=3; tiaoshi=0; xuanshou=12; time[0]--;
if(time[0]<=0) {
time[0]=0; }}}
if(P1_5==0) {
delay(150); if(P1_5==0) {
tiaoshi=1; biaozhi=3; xuanshou=10; time[1]--;
if(time[1]<=0) {
time[1]=0; }} }
anjian(); xianshi(); }}
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