// USING THIS CODE TO UNDERSTAND RIGHT SHIFT AND LEFT SHIFT OPERATORS

/*
#define DELAY 100000

#include"functions.h"
void setup() 
{ 
  init_port();
  while(1)
  {
    char row, col;
    for(row = 0;row<8;row++)
    {
      out_row(~(0x80>>row)); // 1000 0000; 0100 0000; 0010 0000; 0001 0000;
                             // 0111 1111; 1011 1111;
      for(col=0;col<8;col++)
      {
        out_col(1<<col); // 1000 0000
        delay_1();
      }
      out_col(0x00);
    }
    /*out_row(0xfe); // 1111 1110
    out_col(0x01); // 0000 0001
  }
}
*/


#include"functions.h"
void setup() 
{ 
  init_port();
  while(1)
  {
    char row, col;
    for(col = 0;col<8;col++)
    {
      out_row(0xff);
      out_col(1<<col);
      for(row=0;row<8;row++)
      {
        out_row(~(0x80>>row)); // 1000 0000; 0100 0000; 0010 0000;
                               // 0111 1111; 1011 1111; 1101 1111; 
                            // 1111 1110; 1111 1101 X; 1111 11100
                            // 0111 1111 DURING RIGHT SHIFT RIGHT ON BITS GETS AWAY 
                            // ZEROES GET ADDED AT THE FRONT SO THESE ARE NOT SUITABLE 
        delay_1();
      }
      out_row(0xff);
    }
  }
}