cs21-2.c

《手把手教你学单片机的C程序设计》及实验程序

#include <REG51.H>	
#define uint unsigned int	
#define uchar unsigned char
uchar code DIS_SEG7[16]={0x3f,0x06,0x5b,0x4f,0x66,
                0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
uchar code DIS_BIT[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
/****************************/
void delay(uint k)			
{					
uint data i,j;			
for(i=0;i<k;i++)		
{for(j=0;j<121;j++)		
{;}}					
}					
/***********************************/
void main(void)		
{	
	uchar cnt;				
	while(1)				
	{					
	  for(cnt=0;cnt<8;cnt++)	   
	  {P0=DIS_SEG7[cnt+1];
	   P2=DIS_BIT[cnt];
	   delay(100);}
	 }				
}