3-1.c

一些简单的c51程序

#include <reg51.h>
#include <stdio.h>
void main()
{
      int a,b,x;
a=3;
b=5;
SCON = 0x50; 
TMOD |= 0x20; 
TH1 = 0xf3; 
TR1 = 1;
TI = 1;
	  if ( a>b ) x=a;
      else x=b;
      printf ( "x=%d\n",x );
    }