main_ex5_2.c

最近开发的51单片机多功能 实验板

#include <REGX51.H>
#define uchar unsigned char

extern void delay(unsigned int i ); 

ex52()
{
uchar code dispcode[]=
    	{ 0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,
     //字形 0   1    2    3    4    5    6    7    8   9 
          0x88,0x83,0xc6,0xa1,0x86,0x8e,0xff,0xbf,0xff};
    //字形 A   B    C   D    E    F       	-
uchar code dispbitcode[]= 
	{1,2,4,8,16};  
	// 字位码		
  uchar n =0;  
  while(1)
  {
    P0 = dispcode[n+3];
	P2 = dispbitcode[n];
	delay(1);
	if (n<4) n++;
	else n=0;
  }	    
}