7io并行口直接驱动led显示.c

C51学习书

#include <reg51.h> //7．                   I/O并行口直接驱动LED显示
unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66, 
                            0x6d,0x7d,0x07,0x7f,0x6f}; 
unsigned char dispcount; 
  
void delay02s(void) 
{ 
  unsigned char i,j,k; 
  for(i=20;i>0;i--) 
  for(j=20;j>0;j--) 
  for(k=248;k>0;k--); 
} 
  
void main(void) 
{ 
  while(1) 
    { 
      for(dispcount=0;dispcount<10;dispcount++) 
        { 
          P0=table[dispcount]; 
          delay02s(); 
        } 
    } 
}