#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 3);

int in = 2;
int out = 5;
int count = 0;

void setup() {

  pinMode(in, INPUT);
  pinMode(out, OUTPUT);
  pinMode(4, OUTPUT);

  lcd.init();
  lcd.backlight();

}
////end setup
void loop() {

  int x = digitalRead(in);
  
  if (x == 1) {
    int y = digitalRead(out);
    if (y == 1) {
      count ++;
    }
    digitalWrite(4, HIGH);
  }
  else {
    digitalWrite(4, LOW);
  }

  lcd.setCursor(0, 0);
  lcd.print("count =");
  lcd.setCursor(9, 0);
  lcd.print(count);


}
////end loop