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单片机应用技术（C语言版）[王静霞][程序源代码].zip

//程序：ex5_3.c
//功能：在8×8LED点阵上循环显示数字0~9
#include  "REG51.H"
void delay1ms();		//延时约1ms函数声明
void main()
{
   unsigned char code led[]={0x18,0x24,0x24,0x24,0x24,0x24,0x24,0x18,	 	//0
                             0x00,0x18,0x1c,0x18,0x18,0x18,0x18,0x18,	  	//1
                             0x00,0x1e,0x30,0x30,0x1c,0x06,0x06,0x3e,		//2
                             0x00,0x1e,0x30,0x30,0x1c,0x30,0x30,0x1e,		//3
                             0x00,0x30,0x38,0x34,0x32,0x3e,0x30,0x30,		//4
                             0x00,0x1e,0x02,0x1e,0x30,0x30,0x30,0x1e,		//5
                             0x00,0x1c,0x06,0x1e,0x36,0x36,0x36,0x1c,		//6
                             0x00,0x3f,0x30,0x18,0x18,0x0c,0x0c,0x0c,		//7
                             0x00,0x1c,0x36,0x36,0x1c,0x36,0x36,0x1c,		//8
                             0x00,0x1c,0x36,0x36,0x36,0x3c,0x30,0x1c};		//9
   unsigned char w;                       
   unsigned int i,j,k,m;  
   while(1) {
      for(k=0;k<10;k++) 	//字符个数控制变量
      {
         for(m=0;m<400;m++)	//每个字符扫描显示400次，控制每个字符显示时间
         {        	
            w=0x01；		//行变量w指向第一行
            j=k*8;		//指向数组led的第k个字符第一个显示码下标
            for(i=0;i<8;i++)
            { 
               P1=w;		//行数据送P1口
               P0=led[j];	//列数据送P0口
               delay1ms(); 
               w<<=1; 		//行变量左移指向下一行
               j++;		//指向数组中下一个显示码
            }
         }        
      }  
            }
}
//函数名：delay1ms
//函数功能：采用软件实现延时约1ms
//形式参数：无 
//返回值：无
void delay()
{  
   unsigned char  i;
   for(i=0;i<0x10;i++);
}