基于ATMEGA328P用3个开关控制3个灯泡，灯泡只需要亮3秒，然后就关闭，三个开关同时按下去灯泡可以同时亮，在每一个灯泡加一个提示灯，不按下开关时候提示灯是亮的，按下去后提示灯是不亮的

可以使用以下代码来实现：

const int switch1Pin = 2;
const int switch2Pin = 3;
const int switch3Pin = 4;
const int led1Pin = 5;
const int led2Pin = 6;
const int led3Pin = 7;
const int indicator1Pin = 8;
const int indicator2Pin = 9;
const int indicator3Pin = 10;
const int duration = 3000; // 每个灯泡亮3秒钟

void setup() {
  pinMode(switch1Pin, INPUT_PULLUP);
  pinMode(switch2Pin, INPUT_PULLUP);
  pinMode(switch3Pin, INPUT_PULLUP);
  pinMode(led1Pin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
  pinMode(led3Pin, OUTPUT);
  pinMode(indicator1Pin, OUTPUT);
  pinMode(indicator2Pin, OUTPUT);
  pinMode(indicator3Pin, OUTPUT);

  // 所有提示灯都是亮的
  digitalWrite(indicator1Pin, HIGH);
  digitalWrite(indicator2Pin, HIGH);
  digitalWrite(indicator3Pin, HIGH);
}

void loop() {
  if (digitalRead(switch1Pin) == LOW &&
      digitalRead(switch2Pin) == LOW &&
      digitalRead(switch3Pin) == LOW) {
    // 所有开关都按下去了，三个灯泡都要同时亮
    digitalWrite(led1Pin, HIGH);
    digitalWrite(led2Pin, HIGH);
    digitalWrite(led3Pin, HIGH);
    
    // 关闭所有提示灯
    digitalWrite(indicator1Pin, LOW);
    digitalWrite(indicator2Pin, LOW);
    digitalWrite(indicator3Pin, LOW);

    // 等待3秒钟
    delay(duration);

    // 关闭所有灯
    digitalWrite(led1Pin, LOW);
    digitalWrite(led2Pin, LOW);
    digitalWrite(led3Pin, LOW);
    
    // 打开所有提示灯
    digitalWrite(indicator1Pin, HIGH);
    digitalWrite(indicator2Pin, HIGH);
    digitalWrite(indicator3Pin, HIGH);
  }
  else {
    if (digitalRead(switch1Pin) == LOW) {
      digitalWrite(led1Pin, HIGH); // 开启灯泡1
      digitalWrite(indicator1Pin, LOW); // 关闭提示灯1
      delay(duration); // 等待3秒钟
      digitalWrite(led1Pin, LOW); // 关闭灯泡1
      digitalWrite(indicator1Pin, HIGH); // 打开提示灯1
    }

    if (digitalRead(switch2Pin) == LOW) {
      digitalWrite(led2Pin, HIGH); // 开启灯泡2
      digitalWrite(indicator2Pin, LOW); // 关闭提示灯2
      delay(duration); // 等待3秒钟
      digitalWrite(led2Pin, LOW); // 关闭灯泡2
      digitalWrite(indicator2Pin, HIGH); // 打开提示灯2
    }

    if (digitalRead(switch3Pin) == LOW) {
      digitalWrite(led3Pin, HIGH); // 开启灯泡3
      digitalWrite(indicator3Pin, LOW); // 关闭提示灯3
      delay(duration); // 等待3秒钟
      digitalWrite(led3Pin, LOW); // 关闭灯泡3
      digitalWrite(indicator3Pin, HIGH); // 打开提示灯3
    }
  }
}