Practica 2 de Proteus

#include <16F877.h>
#device adc=10
#FUSES XT,NOWDT
#use delay(clock=4000000)
#use rs232(baud=9600, xmit=pin_c6, rcv=pin_c7, bits=8, parity=N)
#include <LCD.C>

void main() {
   int16 q;
   float p;
   setup_adc_ports(AN0);
   setup_adc(ADC_CLOCK_INTERNAL);
   lcd_init();
   for(;;){
      set_adc_channel(0);
      delay_us(10);
      q=read_adc();
      p=5.0*q/1024.0;
      printf(lcd_putc, "\fADC = %4ld", q);
      printf(lcd_putc, "\fVoltage - %01.2fV", p);
      printf("ADC = %4ld", q);
      printf("Voltage = %01.2fV\r", p);
      delay_ms(100);
   }
}