缘由单片机的代码，求大家来帮帮我-编程语言-CSDN问答

#include "REG52.h"
unsigned char code smgduan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0,64}; //共阴0~F消隐减号
unsigned char Js=0, miao=0;//中断计时 秒 分 时 毫秒
sbit k0=P3^0;
sbit k1=P3^1;
void smxs(unsigned char mz, unsigned char w)
{unsigned char Xd=0;P0=255;P0=255-smgduan[mz];P2=w;while(++Xd);
}
void ZhongDuanSheZhi()
{TH0+=(65536-9216/2)/256;/*11.0592MHz定时器赋初值，定时5ms触发中断，自动补偿方式*/TL0+=(65536-9216/2)%256; TMOD=0X01;//16位定时器/计数器TR0=0; //启动定时器T0。ET0=1; //开启定时器EA=1; //全局中断开关
}
void main()
{unsigned char Xd=0,qh=0;//消抖unsigned int shu=0;ZhongDuanSheZhi();while(1){if(k0==0&&++Xd==0){qh=TR0=1;shu=1000;Js=0;while(k0==0);}if(k1==0&&++Xd==0){qh=0;while(k1==0);}smxs(shu/1000,1);smxs(shu/100%10,2);smxs(shu/10%10,4);smxs(shu%10,8);if(Js>=200){Js=0;if(qh==1)shu+=2;if(qh==0&&++miao>2)shu=4774;}}
}
void ZhongDuan() interrupt 1
{++Js;TH0+=(65536-9216/2)/256;TL0+=(65536-9216/2)%256;        
}