Shifting & Blinking Multiple LED’s Light using 8051

Circuit

Coding

S/W Simulation

H/W Simulation

Output

//  Program to Shifting and blink Multiple LEDs. 

#include<reg51.h>
#define LED_8 P0	  //LEDs are connected to port 0.

void delay_ms(unsigned int dly)
{
   unsigned int i;
   for(;dly>0;dly--)
   for(i=122;i>0;i--);   //approximate delay  
}

void main()
{
     unsigned char i,x=0x01;
	 LED_8=0x0FF;
	 for(i=0;i<=7;i++)			   //For Shifting
	 {
	 	delay_ms(1000);
		LED_8=~x;
		x<<=1;
	 }
	 delay_ms(500);
	 LED_8=0x55;
     while(1)
     {
          delay_ms(500);		   //For Alternative Blinking
          LED_8=~LED_8;
     }
}