#include <16F88.h>


#fuses NOWDT, INTRC, NOMCLR
#use delay(clock=4000000) 

void main(void)
{

setup_oscillator(OSC_4MHZ);
SET_TRIS_a(0b00000000);


   while(true)
   {
      output_a(0b00001000);
      delay_ms(500);
      output_a(0b00000100);
      delay_ms(500);
      output_a(0b00000010);
      delay_ms(500);
      output_a(0b00000001);
      delay_ms(500);
   }

}