cs10-1.c

《手把手教你学单片机的C程序设计》实验程序第4章实验程序

#include <REG51.H>		
#define uchar unsigned char	
#define uint unsigned int	
uchar code SEG7[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
//=====================
void delay(uint k)		
{					
uint i,j;				
for(i=0;i<k;i++){		
for(j=0;j<121;j++)			
{;}}						
}					
//=====================
void main(void)		
{					
uchar m=0,n=0,i;			
  for(i=0;i<250;i++)	
  {					
  P0= SEG7[n];			
  P2=0xfe;				
  delay(4);				
  P0= SEG7[m];			
  P2=0xfd;				
  delay(4);			
  }					
//=====================
  {					
  uchar m=8,x=6;		
	for(i=0;i<250;i++)		
	{				
	P0= SEG7[n];			
	P2=0xfe;			
 	delay(4);			
	P0= SEG7[m];			
	P2=0xfd;			
 	delay(4);			
	P0= SEG7[x];			
	P2=0xfb;			
 	delay(4);			
	}				
  }					
//====================
 for(i=0;i<250;i++)			
  {					
  P0= SEG7[n];			
  P2=0xfe;			
  delay(4);				
  P0= SEG7[m];			
  P2=0xfd;				
  delay(4);			
  }					
P0=0x00;				
while(1);					
}