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| #include <reg51.h>
#define uchar unsigned char
#define uint unsigned int
#define WEI P1
#define KEY P2
char code table[] = {
0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e
};
int scoreA = 0,scoreB = 0; //A队，B队分数
void delay(int t) //延时函数
{
int i,j;
for(i = 0;i < t;i++)
for(j = 0;j < 120;j++);
}
void display(int A,int B) //数码管动态显示函数
{
int shi,ge;
shi = A/10; //十位分离
ge = A%10; //个位分离
P0 = 0xff; //消影处理
P1 = 0x01; //给位选
P0 = table[shi]; //给段选
delay(5); //延时显示
P0 = 0xff;
P1 = 0x02;
P0 = table[ge];
delay(5);
shi = B / 10;
ge = B % 10;
P0 = 0xff;
P1 = 0x04;
P0 = table[shi];
delay(5);
P0 = 0xff;
P1 = 0x08;
P0 = table[ge];
delay(5);
}
void keyscan()
{
int temp; //按键扫描临时变量
int t; //数据交换临时变量
temp = KEY;
if((temp & 0x0f) != 0x0f)
{
delay(1);
temp = KEY;
if((temp & 0x0f) != 0x0f)
{
temp = KEY;
temp = temp & 0x0f;
switch(temp)
{
case 0x0e: //第一个键被按下
scoreA += 1;
if(scoreA > 99) scoreA = 0; //A队分数加1
break;
case 0x0d: //第二个键被按下
scoreB += 1; //B队分数加1
if(scoreB > 99) scoreB = 0;
break;
case 0x0b: //第三个键被按下
{
t = scoreB;
scoreB = scoreA; //交换场地
scoreA = t;
break;
}
case 0x07: //第四个键被按下
scoreA = 0; //两队分数清零
scoreB = 0;
break;
default : break;
}
temp = KEY;
while((temp & 0X0F) != 0x0f)
{
temp = KEY;
}
}
}
}
void main()
{
while(1)
{
display(scoreA,scoreB);//数码管动态显示
keyscan(); //按键扫描
}
}
|