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#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit k0=P1^0;
sbit k1=P1^1;
sbit k2=P1^2;
sbit k3=P1^3;
sbit k4=P1^4;
sbit k5=P1^5;
sbit k6=P1^6;
sbit k7=P1^7;
sbit beep=P3^7; /*蜂鳴器*/
sbit ks=P2^4; /*開始計(jì)時(shí)*/
sbit jiayi=P2^5; /*分?jǐn)?shù)加1*/
sbit jianyi=P2^6; /*分?jǐn)?shù)減1*/
sbit fw=P2^7; /*復(fù)位*/
int flg=1;
bit flg1=0;
int t=0,s=0;
uchar qiangdanum=0x0b;
uchar code table[]=
{0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00,0x00};
uchar ge=0,shi=0;
uint num,time=10, fs=0;
int nums[]={50,50,50,50,50,50,50,50};
void kyy(void) ;
void displayfs();
void display(); /*顯示函數(shù)*/
void kys(); /*設(shè)置按鍵函數(shù)*/
void kys2(); /*搶答按鍵函數(shù)*/
void delay(unsigned int z) /*延遲函數(shù)*/
{
unsigned int x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void intial()
{
TMOD=0X01; /*采用方式一，即十六位計(jì)數(shù)器*/
TH0=(65536-50000)/256; /*設(shè)置初始值，50ms中斷一次*/
TL0=(65536-50000)%256;
EA=1;ET0=1; /*開啟總中斷源,定時(shí)器中斷*/
}
void intia2()
{ TMOD=0X10; /*采用方式一，即十六位計(jì)數(shù)器*/
TH1=(65536-50000)/256; /*設(shè)置初始值，50ms中斷一次*/
TL1=(65536-50000)%256;
EA=1;ET1=1; /*開啟總中斷源,定時(shí)器中斷*/
}
main()
{ intia2();
intial(); /*初始化*/
beep=0;
while(1)
{ kys();
if(flg1==1)
displayfs();
else
display(); /*顯示函數(shù)*/
if(flg==0)
{
kys2();
}
}
}
void kys2() /*搶答按鍵函數(shù)*/
{
if(k0==0) /*開關(guān)0按下*/
{
delay(5);
if(k0==0)
{ flg=1;
qiangdanum=1; /* 1號選手搶答成功，數(shù)碼管顯示1*/
beep=1;
delay(1000);
beep=0;
time=20;
}
}
if(k1==0) /*開關(guān)1按下*/
{
delay(5);
if(k1==0)
{ flg=1;
qiangdanum=2; /* 2號選手搶答成功，數(shù)碼管顯示2*/
beep=1;
delay(1000);
beep=0;
time=20;
}
}
if(k2==0) /*開關(guān)2按下*/
{
delay(5);
if(k2==0)
{ flg=1;
qiangdanum=3; /* 3號選手搶答成功，數(shù)碼管顯示3*/
beep=1;
delay(1000);
beep=0;
time=20;
}
}
if(k3==0) /*開關(guān)3按下*/
{
delay(5);
if(k3==0)
{ flg=1;
qiangdanum=4; /* 4號選手搶答成功，數(shù)碼管顯示4*/
beep=1;
delay(1000);
beep=0;
time=20;
}
}
if(k4==0) /*開關(guān)4按下*/
{
delay(5);
if(k4==0)
{ flg=1;
qiangdanum=5; /* 5號選手搶答成功，數(shù)碼管顯示5*/
beep=1;
delay(1000);
beep=0;
time=20;
}
}
if(k5==0) /*開關(guān)5按下*/
{
delay(5);
if(k5==0)
{ flg=1;
qiangdanum=6; /* 6號選手搶答成功，數(shù)碼管顯示6*/
beep=1;
delay(1000);
beep=0;
time=20;
}
}
if(k6==0) /*開關(guān)6按下*/
{
delay(5);
if(k6==0)
{ flg=1;
qiangdanum=7; /* 7號選手搶答成功，數(shù)碼管顯示7*/
beep=1;
delay(1000);
beep=0;
time=20;
}
}
if(k7==0) /*開關(guān)7按下*/
{
delay(5);
if(k7==0)
{ flg=1;
qiangdanum=8; /* 8號選手搶答成功，數(shù)碼管顯示8*/
beep=1;
delay(1000);
beep=0;
time=20;
}
}
}
void kys() /*設(shè)置按鍵函數(shù)*/
{
uchar i;
if(qiangdanum==0x0a) //復(fù)位按鍵按下后開始按鍵才有效
{
if(ks==0)
{
delay(5);
if(ks==0)
{
TR0=1;
flg=0;
}
}
}
if((qiangdanum!=0x0a)&&(qiangdanum!=0x0b)&&(time!=0)) //在規(guī)定時(shí)間內(nèi)或規(guī)定時(shí)間內(nèi)答題結(jié)束后，分?jǐn)?shù)加減按鍵才有效
{
if(jiayi==0)
{
delay(5);
if(jiayi==0)
TR0=0;
time=nums[qiangdanum-1];
for (i=0;i<5;i++)
{display();
delay(250);
delay(250);
}
fs=nums[qiangdanum-1];
fs++;
nums[qiangdanum-1]=fs;
time=nums[qiangdanum-1];
// qiangdanum=0x0b;
while(!jiayi);
}
if(jianyi==0)
{
delay(5);
if(jianyi==0)
TR0=0;
time=nums[qiangdanum-1];
for (i=0;i<5;i++)
{display();
delay(250);
delay(250);
};
fs=nums[qiangdanum-1];
fs--;
nums[qiangdanum-1]=fs;
time=nums[qiangdanum-1];
// qiangdanum=0x0b;
while(!jianyi);
}
}
if(fw==0) //復(fù)位按鍵
{
delay(5);
if(fw==0)
{ flg=1;
TR0=0;
time=10;
flg1=1;
s=0;
TR1=1;
}
}
}
void time0() interrupt 1 /*1秒定時(shí)函數(shù),采用方式1重裝*/
{
num++;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
if(num==20)
{
num=0;
time--;
if(time==0) //時(shí)間到，搶答無效
{
TR0=0;
flg=1;
}
}
}
void time1() interrupt 3
{
t++;
TH1=(65536-50000)/256;
TL1=(65536-50000)%256;
if(t==200)
{ qiangdanum=0x0b;
t=0;
s++;
if(s==8) //時(shí)間到，搶答無效
{ s=0;
TR1=0;
……………………
…………限于本文篇幅余下代碼請從51黑下載附件…………

復(fù)制代碼

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