text2.c

分两个程序：接收端和发送端都有程序

#include<reg51.h>
#include<absacc.h>

main()
{ //unsigned char string[5];
  //unsigned char i;
   TMOD=0x21;
   EA=1;
   ET1=1;
   //T2CON=0x08;

   TH1=0xfd;
   TL1=0xfd;
   SCON=0x50;
   PCON=0x80;

   TR1=1;
   while(1)
   {}

}

recive() interrupt 4 using 1
{  char i;
  char string[5];
   RI=0;
   string[i]=SBUF;
   i++;

   if(SBUF=="%d")
   { string[i]='\0';
     P1=0x11;
   }
  /* if(SBUF==0x21)
   { string[i]='\0';
     P1=0x21;
   }*/

}