งานหา micro 18

Interfacing LED 

#include<reg51.h>
#define led P0
unsigned char i=0;
void delay (int);

void delay (int d)
{
 unsigned char i=0;
 for(;d>0;d--)
 {
  for(i=250;i>0;i--);
                for(i=248;i>0;i--);
 }
}

void main()
{
 while(1)//// led blink 
 {
 led=0xff;
 delay(1000);
 led=0x00;
 delay(1000);
 ++i;
  if(i==7)
  {
   i=0;
   break;
  }
  }
 while(1)//// binary equivalent representation of 1byte data
 {
  led=i++;
  if(i==256)
  {
   i=0;
   break;
  }
  delay(500);
 }
  
 while(1);
}