text1.c

用8只数码管显示不同的字符

//-----------------------------------------------------------------
//  名称: 8只数码管动态显示多字符
//-----------------------------------------------------------------
//  说明: 数码管动态扫描静态显示0-7  
//            
//-----------------------------------------------------------------

#include <reg51.h>
#include <intrins.h>

#define uchar unsigned char
#define uint  unsigned int

//各数字的数码管段码
uchar code DSY_CODE[] = {0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90};

//-----------------------------------------------------------------	
// 延时子程序	 
//-----------------------------------------------------------------
void DelayMS(uint ms) 
{
   uchar t;
   while(ms--)
   { 
     for(t = 0; t < 120; t++);
   }
}

//-----------------------------------------------------------------	
// 主程序	 
//-----------------------------------------------------------------
void main()
{
   uchar k,m = 0x80;
 
   P0 = 0xff;
   P2 = 0x00;
   
   while(1)
   {
      for(k = 0; k < 8; k++)
      {
        m = _crol_(m,1);
		P0 = DSY_CODE[k+1]; //显示1-8
        P2 = m;
        DelayMS(2);
        P2 = 0x00;
      }
   }
}