51单片机利用定时器T0让数码管延时显示数字

#include 
#define guan P0
#define wei  P2  
#define uchar unsigned char
#define uint  unsigned int

sbit wei0=P2^4;
sbit wei1=P2^5;
sbit wei2=P2^6;
sbit wei3=P2^7;

uint m=0;
unsigned char code   weitable[]={0x1f,0x2f,0x4f,0x8f};
unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
            0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};//共阴极数码管码表

void main()
 {
  TMOD=0x01;
  ET0=1;
  TR0=1;
  EA=1;
  wei=0x0f;
 while(1)
 {
  if(m==100)
  {wei=0x8f;
  guan=table[2];
  }
  }

 }										 
void TO_TIMER () interrupt 1
 {
  TH0=(65536-46080)/256;
  TL0=(65536-46080)%256;
  m++;
 }

一开始在数码管的显示过程中没有加while（1）循环，结果是数码管闪屏，原来数码管的显示过程类似于按钮的点动原理，加上while循环，则使数字不停的投屏，给人的感觉是一直显示的。