18b20测温送数码管显示

#include <REG52.H>
//#include <at89x51.h>

sbit DQ = P2 ^ 2;  //定义端口DQ

sbit led1    =P2^4;
sbit led2    =P2^5;
sbit led3    =P2^6;
sbit led4    =P2^7;
  
void Write_char(bit start, unsigned char ddata);
void Send_byte(unsigned char bbyte);
void Delaynms(unsigned int di);



unsigned char  LEDData1 [ ] = {                
           0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e

}; //0-9LED数值//共阳极





/******************************************************************************/
void Delaynms(unsigned int di) //延时
{
unsigned int da,db;
  for(da=0;da<di;da++)