const int Button_Pin = 7;
const int Led_Pin = 13;

 

void setup() {
  pinMode(Button_Pin, INPUT);
  pinMode(Led_Pin, OUTPUT);
}
int old_button_state = LOW;
int led_state = LOW;

 

void loop() {
  const int CURRENT_BUTTON_STATE = digitalRead(Button_Pin);
  if(CURRENT_BUTTON_STATE != old_button_state && CURRENT_BUTTON_STATE == HIGH){
    if(led_state == LOW)
    led_state == HIGH)
    else
    led_state == LOW;

 

    digitalWrite(Led_Pin, led_state);
  }
  old_button_state == CURRENT_BUTTON_STATE;
}

 

 

 

 

질문입니다.

 

 

if(CURRENT_BUTTON_STATE != old_button_state && CURRENT_BUTTON_STATE == HIGH)

 

여기서 이 문장 해석족 부탁드립니다. 이해가 잘 안가네요..