2-6.c

一些简单的c51程序

#include <reg51.h>
#include <stdio.h>
          int x=225;
          void main( )
          {  
extern y;
          SCON = 0x50; 
          TMOD |= 0x20; 
          TH1 = 0xf3; 
          TR1 = 1;
           TI = 1;
		  printf("x=%d,y=%d\n",x,y);
          }