void main(void)
{
     //init TRIS
     TRISBbits.TRISB4=0;
     TRISBbits.TRISB5=0;
     TRISBbits.TRISB6=0;
     TRISBbits.TRISB7=0;
     //infinity loop
     while(1)
     {
          LED1=1;           //simple LED Blinking
          LED2=1;           //simple LED Blinking
          Delay10KTCYx(250);
          Delay10KTCYx(250);
          LED1=0;
          LED2=0;
          Delay10KTCYx(250);
          Delay10KTCYx(250);
     }
}