int led=12;
int Pushbutton1=27;
#include <LiquidCrystal.h>
LiquidCrystal lcd(2,0,4,16,17,5);

void setup()
{
  pinMode(led, OUTPUT);
  pinMode(Pushbutton1, INPUT);
  lcd.begin(16,2);
}
void loop()
{
  int a;
  a=digitalRead(Pushbutton1);
  if(a==1)
  {
    digitalWrite(led, HIGH);
    delay(1000);
    digitalWrite(led, LOW);
    delay(1000);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("welcome");
    delay(1000);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("enter your coin");
    delay(1000);
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("1234567890");
    delay(1000);
  }
  }