Electronic Components Review Made With Electronic Components

 //download the LCD library in your code
 #include <LiquidCrystal.h>
 LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

// name your variables
const int button1 = 6;
const int button2 = 7;
const int button3 = 8;
const int button4 = 9;
int switchState = 0;
int prevSwitchState = 0;
int reply;
 
 void setup() {
  // put your setup code here, to run once:
  lcd.begin(16, 2);
  
  // identify your buttons
  pinMode(button1, INPUT);
  pinMode(button2, INPUT);
  pinMode(button3, INPUT);
  pinMode(button4, INPUT);
  
  // determine what you want the start screen to say
  lcd.print ("Electronic");
  lcd.setCursor(0,1);
  lcd.print("Components!");
    
}

void loop() {
  // put your main code here, to run repeatedly:
  switchState = digitalRead(button1);
    // this is the button placed at 19e on the small breadboard
  if (switchState != prevSwitchState) {
    // if button1 is pressed...
    if (switchState == LOW) {
      lcd.clear();
        // get rid of the start screen
      lcd.setCursor(0,0);{
        // set your cursor at the first space on the first line 
      lcd.print("Resistor");
          // the display will write "Resistor" 
      lcd.setCursor(0,1);
          // reset your cursor position to the first space on the second line
      lcd.print("Control current");
          // the display will write "Control current"
      }
    }
    prevSwitchState = switchState;
      // assign switchState's value to the variable prevSwitchState. 
      // This enables you to track changes in the switch the next time the loop runs
  }
  
  switchState = digitalRead(button2);
    // this is the button placed at 10e on the small breadboard
  if (switchState != prevSwitchState) {
    // if button2 is pressed...
    if (switchState == LOW) {
      lcd.clear();
        // get rid of the start screen
      lcd.setCursor(0,0);{
        // set your cursor at the first space on the first line 
        lcd.print("Transistor");
          // the display will write "Transistor" 
        lcd.setCursor(0,1);
          // reset your cursor position to the first space on the second line
        lcd.print("Switch signal");
          // the display will write "Switch signal"
      }
    }
  prevSwitchState = switchState;
  // assign switchState's value to the variable prevSwitchState. 
  // This enables you to track changes in the switch the next time the loop runs 
  }
  
  switchState = digitalRead(button3);
    // this is the button placed at 40E on the big breadboard
  if (switchState != prevSwitchState) {
    // if button3 is pressed...
    if (switchState == LOW) {
      lcd.clear();
      // get rid of the start screen
      lcd.setCursor(0,0);{
        // set your cursor at the first space on the first line 
        lcd.print("Capacitor");
          // the display will write "Capacitor" 
        lcd.setCursor(0,1);
          // reset your cursor position to the first space on the second line
        lcd.print("Stores current");
          // the display will write "Stores current"
      }
    }
  prevSwitchState = switchState;
    // assign switchState's value to the variable prevSwitchState. 
    // This enables you to track changes in the switch the next time the loop runs
  }
  
  switchState = digitalRead(button4);
  // this is the button placed at 49E on the big breadboard
  if (switchState != prevSwitchState) {
    // if button4 is pressed...
    if (switchState == LOW) {
      lcd.clear();
        // get rid of the start screen
      lcd.setCursor(0,0);{
        // set your cursor at the first space on the first line 
        lcd.print("Battery");
          // the display will write "Battery" 
        lcd.setCursor(0,1);
          // reset your cursor position to the first space on the second line
        lcd.print("Provides current");
          // the display will write "Provides current"
      }
    }
  prevSwitchState = switchState;
    // assign switchState's value to the variable prevSwitchState. 
    // This enables you to track changes in the switch the next time the loop runs
  }
}