秒表可以连续走到9999秒 -

#include<reg51.h>
#define GPIO_DIG P0
#define GPIO_PLACE P1
unsigned char code DIG_PLACE[4] = {0xfe,0xfd,0xfb,0xf7};//,0xef,0xdf,0xbf,0x7f};//位选控制查表的方法控制
unsigned char code DIG_CODE[10] = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
unsigned char DisplayData[8]; //用来存放要显示的8位数的值
unsigned char Time; //用来存放定时时间
unsigned int Second;
/*********************使用数码管显示*******************/
void DigDisplay()
{
unsigned char i;
unsigned int j;
for(i=0; i<8; i++)
{
GPIO_PLACE=DIG_PLACE[i]; //发送位选
GPIO_DIG=DisplayData[i]; //发送段码
j=10; //扫描间隔时间设定
while(j--);
GPIO_DIG=0x00; //消隐
}
}
/*********************配置定时器************************/
void Timer0init(void)
{
TMOD=0x01; //定时器0选择工作方式1
TH0 =(65536-49550)/256; //设置初始值,定时50MS
TL0 =(65536-49550)%256;
EA =1; //打开总中断
ET0 =1; //打开定时器0中断
TR0 =1; //启动定时器0
}
/**********************主函数***************************/
void main(void)
{
Timer0init();
while(1)
{
if(Second>9999)
{
Second=0;
}
DisplayData[0]=DIG_CODE[(Second)/10000];
DisplayData[1]=DIG_CODE[(Second)%1000/100];
DisplayData[2]=DIG_CODE[(Second)%100/10];
DisplayData[3]=DIG_CODE[(Second)%10];
DigDisplay();
}
}
/*******************定时器0中断函数**********************/
void Timer0() interrupt 1
{
TH0=(65536-49550)/256; //设置初始值
TL0=(65536-49550)%256;
Time++;
if(Time==40) //控制秒时间长短
{
Second++;
Time=0;
}
}

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