#include <16F84A.h>         //pic a utilizar   
#fuses XT,NOWDT,NOPROTECT,PUT      //ordenes para el programador 
#use delay (clock=4000000)         //Fosc=4Mhz

#bit led = PORTB.RB1
#bit led_tris = TRISB.RB1

void main(void)
{

led_tris=0;

led=1;
delay_ms(2000);
led=0;

}