#include <Wire.h> 
#include <LiquidCrystal_I2C.h>      

LiquidCrystal_I2C lcd(0x27, 20, 4); 

int x=2; //button is connected to digital pin 2
int val=0,TC_num=0;

void setup() 
{
  lcd.begin(16,2);
  lcd.backlight();
  lcd.setCursor(0,0); 
  lcd.print("TC Type= ");
  lcd.setCursor(9,0); 
  lcd.print("NA"); // ("B Type")
 
}

void loop() 
{
  //read the value of the button when pressed
  val=digitalRead(x);

  if(val==1){            // button is pressed
    TC_num=TC_num+1;     // add 1 to the TC_num variable
  }
  
  if (TC_num==1){
    lcd.setCursor(9,0); 
    lcd.print("B "); // ("B Type")
    delay(10);
  }
  else if (TC_num==2){
    lcd.setCursor(9,0);  
    lcd.print("E ");  // ("E Type");
    delay(10);
  }
  else if (TC_num==3){
    lcd.setCursor(9,0); 
    lcd.print("J ");    // ("J Type")
    delay(10);
  
  }
  else if (TC_num==4){
    lcd.setCursor(9,0); 
    lcd.print("K ");   // ("K Type")
    delay(10);

  }
  else if (TC_num==5){
    lcd.setCursor(9,0);  
    lcd.print("N ");     // ("N Type")
    delay(10);

  }
  else if (TC_num==6){
    lcd.setCursor(9,0);  
    lcd.print("R ");     // ("R Type")
    delay(10);

  }
  else if (TC_num==7){
    lcd.setCursor(9,0);  
    lcd.print("S ");      // ("S Type")
    delay(10);

  }
  else if (TC_num==8){
    lcd.setCursor(9,0);  
    lcd.print("T ");      //  ("T Type");
    delay(10);

 //*******************************************************************
    //reset the TC_num variable to 0
    TC_num=0;

//*********************************************************************

  }
  //wait 300 ms for the next reading
  delay(300); 
}