51单片机的篮球计分器课程设计报告 -

#include<reg51.h>
unsigned char code seg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x00,0x90 };
int i=11,j=59,a=0,b=0,m=0,n=0,temp,s=0,r=24,k;
sbit aa=P0^0;
sbit bb=P0^1;
sbit one=P0^2;
sbit two=P0^3;
sbit three=P0^4;
sbit exchange=P0^5;
sbit stop=P0^6;
sbit led=P3^6;
sbit tt=P3^7;
void delay(int x)
{
int w,q;
for(w=0;w<x;w++)
for(q=0;q<120;q++);
}
void display(int i,int j,int a,int b)
{
P2 = 0x01;
P1 = seg[i/10];
delay(1);
P2 = 0x00;
P2 = 0x02;
P1 = seg[i%10];
delay(1);
P2 = 0x00;
P2 = 0x04;
P1 = seg[j/10];
delay(1);
P2 = 0x00;
P2 = 0x08;
P1 = seg[j%10];
delay(1);
P2 = 0x00;
P2= 0x10;
P1 = seg[a/10];
delay(1);
P2= 0x00;
P2= 0x20;
P1 = seg[a%10];
delay(1);
P2 = 0x00;
P2 = 0x40;
P1 = seg[b/10];
delay(1);
P2 = 0x00;
P2= 0x80;
P1 = seg[b%10];
delay(1);
P2 = 0x00;
}
void time0() interrupt 1
{
TH0 = 0xb1;
TL0 = 0xe0;
m++;
if(m==50)
{
m=0;
j--;
if(j==-1)
j = 59;
n++;
if(n==60)
{
n=0;
i--;
if(i==0&&j==0){
ET0=1;
TR0 = 1;
}
}
}
display(i,j,a,b);
}
void main()
{
P0 = 0x00;
display(12,0,0,0);
TMOD = 0x01;
TH0 = 0xb1;
TL0 = 0xe0;
IE = 0x82;
TR0 = 1;
while(1)
{
if(aa==1&&one==1)
{a++;display( i, j, a, b);while(one==1);}
else if(aa==1&&two==1)
{ a=a+2;display( i, j, a, b);while(two==1);}
else if(aa==1&&three==1)
{a=a+3;display( i, j, a, b);while(three==1);}
else if(bb==1&&one==1)
{b++;display( i, j, a, b);while(one==1);}
else if(bb==1&&two==1)
{ b=b+2;display( i, j, a, b);while(two==1);}
else if(bb==1&&three==1)
{ b=b+3;display( i, j, a, b);while(three==1);}
else if(exchange==1)
{temp = a;a = b;b = temp;delay(500);}
else if(stop==1) {ET0=0;TR0=0;while(stop==1);while(stop==0);while(stop==1){ET0=1;TR0=1;}}
}
}

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