The NOT Gate With Arduino

/*Arduino_NOT_Logic_Gate. A simple circuit to view the NOT gate. 
And exploring simple forms of code. 
Change the code to buttonStatus == HIGH and see what happens.*/ 

int buttonPin = 2;  
int ledPin = 8;  
int buttonStatus = 0; 

void setup() {
 pinMode(ledPin, OUTPUT); 
 pinMode(buttonPin, INPUT);
} 

void loop(){     
buttonStatus = digitalRead(buttonPin); 
 if (buttonStatus == LOW) {  // check if the button state is LOW if yes then turn the LED on
 digitalWrite(ledPin, HIGH); 
 }  
else { digitalWrite(ledPin, LOW); // else if the button state is HIGH turn the LED off
 }
}

/*Arduino_NOT_Logic_Gate. Another variation in the code would be this*/

int buttonPin = 2; 
int ledPin = 8; 
int buttonStatus = 0; 

void setup() {
pinMode(ledPin, OUTPUT); 
pinMode(buttonPin, INPUT); 
} 

void loop(){ 

buttonStatus = digitalRead(buttonPin); 
if (buttonStatus != HIGH) // if the button is not (!=) HIGH (hence LOW) turn on the LED
{digitalWrite(ledPin, HIGH);   } 

else { digitalWrite(ledPin, LOW); } 
}