求熱心人幫忙用C、定時(shí)/計(jì)數(shù)器編寫如下程序

#include<at89x52.h>
#include<intrins.h>//參數(shù)左移頭文件
#define uint unsigned int
#define uchar unsigned char
uchar temp,aa,numdu,numwe;
sbit dula=P2^6;//定義dula
sbit wela=P2^7;//定義wela
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};//數(shù)給的格試uchar code table[]={｝在{}中要寫入數(shù)據(jù)
uchar code tablewe[]={
0xfe,0xfd,0xfb,0xf7,0xef,0xdf};

void main()
{
 numdu=0;
 numwe=0;
 aa=0;
 
 TMOD=0x01;//對(duì)TMOD付值也可寫：TMOD=1;
 TH0=(65536-50000)/256;//THO初值，"/"為求莫，(65536-50000)/256放到高8位中
 TL0=(65536-50000)%256;//HO初值，"*"為求余，(65536-50000)%256放到低8位中
 EA=1;//開總中斷
 ET0=1;//開定時(shí)器中斷
 TR0=1;//啟動(dòng)定時(shí)器
/*定時(shí)器/計(jì)數(shù)器設(shè)置流程
1對(duì)TMOD賦值，以確定T0及T1的工作方式；
2計(jì)算初值，并將其值寫入TH0，TL0或TH1，TL1中；
3中斷方式時(shí)，則對(duì)IE賦值，開放中斷；
4致TR0或TR1置位，啟動(dòng)定時(shí)/計(jì)數(shù)器定時(shí)或計(jì)數(shù)
*/
while(1)
{

if(P3_2==0)
  {
  P1_4=0;
  P0_0=0;
  P0_1=0;
  }

 if(aa==100)  
 {
  aa=0;    
  P0_1=1;
  P0_2=0;
  }


if(P3_4==0)
  {
  P1_4=0;
  P0_0=1;
  P0_2=1;
  }
 
 }
}
void timer0() interrupt 1
{
 TH0=(65536-50000)/256;
 TL0=(65536-50000)%256;
 aa++;
}