int chanled[]={2,3,4,5,6,7,8};
int switchline=9;
void setup() {
  for (int i = 0; i<7;i++){//i=i+2 giong voi i+=2
    pinMode(chanled[i],OUTPUT);
  };
  pinMode( switchline, INPUT);

  // put your setup code here, to run once:

}
void hienthisovachu(int n){
  switch(n) {
        case 1:
 // Bật các đoạn tương ứng để hiển thị số 1
            digitalWrite(chanled[1], HIGH);
            digitalWrite(chanled[2], HIGH);
            digitalWrite(chanled[0], LOW);
            digitalWrite(chanled[3], LOW);
            digitalWrite(chanled[4], LOW);
            digitalWrite(chanled[5], LOW);
            digitalWrite(chanled[6], LOW);
            break;
        case 2:
            // Bật các đoạn tương ứng để hiển thị số 2
            digitalWrite(chanled[0], HIGH);
            digitalWrite(chanled[1], HIGH);
            digitalWrite(chanled[6], HIGH);
            digitalWrite(chanled[4], HIGH);
            digitalWrite(chanled[3], HIGH);
            digitalWrite(chanled[2], LOW);
            digitalWrite(chanled[5], LOW);
            break;
       case 3:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[4], LOW);
        digitalWrite(chanled[5], LOW);
        break;
        case 4:
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[0], LOW);
        digitalWrite(chanled[3], LOW);
        digitalWrite(chanled[4], LOW);
        break;
        case 5:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[1], LOW);
        digitalWrite(chanled[4], LOW);
        break;
        case 6:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[4], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[1], LOW);
        break;
        case 7:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], LOW);
        digitalWrite(chanled[4], LOW);
        digitalWrite(chanled[5], LOW);
        digitalWrite(chanled[6], LOW);
        break;
        case 8:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[4], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        break;
        case 9:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[4], LOW);
        break;
        case 10:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[4], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[3], LOW);
        break;
        case 11:
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[4], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[0], LOW);
        digitalWrite(chanled[1], LOW);
       break;
       case 12: //c
       digitalWrite(chanled[0], HIGH);
       digitalWrite(chanled[3], HIGH);
       digitalWrite(chanled[4], HIGH);
       digitalWrite(chanled[5], HIGH);
       digitalWrite(chanled[1], LOW);
       digitalWrite(chanled[2], LOW);
       digitalWrite(chanled[6], LOW);
       break;
       case 13:
       digitalWrite(chanled[1], HIGH);
       digitalWrite(chanled[2], HIGH);
       digitalWrite(chanled[3], HIGH);
       digitalWrite(chanled[4], HIGH);
       digitalWrite(chanled[6], HIGH);
       digitalWrite(chanled[0], LOW);
       digitalWrite(chanled[5], LOW);
       break;
       case 14:  //e
       digitalWrite(chanled[0], HIGH);
       digitalWrite(chanled[3], HIGH);
       digitalWrite(chanled[4], HIGH);
       digitalWrite(chanled[5], HIGH);
       digitalWrite(chanled[6], HIGH);
       digitalWrite(chanled[1], LOW);
       digitalWrite(chanled[2], LOW);
       break;
       case 15:
       digitalWrite(chanled[0], HIGH);
       digitalWrite(chanled[4], HIGH);
       digitalWrite(chanled[5], HIGH);
       digitalWrite(chanled[6], HIGH);
       digitalWrite(chanled[1], LOW);
       digitalWrite(chanled[2], LOW);
       digitalWrite(chanled[3], LOW);
       break;






           }
}



bool trangthaicongtacbandau=LOW;

void loop() { 
  bool congtac=digitalRead(switchline);
  if (congtac != trangthaicongtacbandau) {
    // Nếu trạng thái công tắc thay đổi, tắt tất cả các LED
    for (int  m=0; m<7; m++) { // Giả sử các chân LED nối từ chân 2 đến 8
      digitalWrite(chanled[m], LOW); // Tắt từng chân của LED
    }
    trangthaicongtacbandau = congtac; // Cập nhật trạng thái trước đó
  }
  if ( congtac==HIGH){

  int giatringaunhien=random(2,9);
  digitalWrite(giatringaunhien, HIGH);
  delay(1000);
  digitalWrite(giatringaunhien, LOW);
  delay(1000);
  }
  else{
    
  
      switch(i){
        case 0:
 // Bật các đoạn tương ứng để hiển thị số 1
            digitalWrite(chanled[1], HIGH);
            digitalWrite(chanled[2], HIGH);
            digitalWrite(chanled[0], LOW);
            digitalWrite(chanled[3], LOW);
            digitalWrite(chanled[4], LOW);
            digitalWrite(chanled[5], LOW);
            digitalWrite(chanled[6], LOW);
            break;
        case 1:
            // Bật các đoạn tương ứng để hiển thị số 2
            digitalWrite(chanled[0], HIGH);
            digitalWrite(chanled[1], HIGH);
            digitalWrite(chanled[6], HIGH);
            digitalWrite(chanled[4], HIGH);
            digitalWrite(chanled[3], HIGH);
            digitalWrite(chanled[2], LOW);
            digitalWrite(chanled[5], LOW);
            break;
       case 2:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[4], LOW);
        digitalWrite(chanled[5], LOW);
        break;
        case 3:
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[0], LOW);
        digitalWrite(chanled[3], LOW);
        digitalWrite(chanled[4], LOW);
        break;
        case 4:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[1], LOW);
        digitalWrite(chanled[4], LOW);
        break;
        case 5:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[4], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[1], LOW);
        break;
        case 6:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], LOW);
        digitalWrite(chanled[4], LOW);
        digitalWrite(chanled[5], LOW);
        digitalWrite(chanled[6], LOW);
        break;
        case 7:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[4], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        break;
        case 8:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[4], LOW);
        break;
        case 9:
        digitalWrite(chanled[0], HIGH);
        digitalWrite(chanled[1], HIGH);
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[4], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[3], LOW);
        break;
        case 10:
        digitalWrite(chanled[2], HIGH);
        digitalWrite(chanled[3], HIGH);
        digitalWrite(chanled[4], HIGH);
        digitalWrite(chanled[5], HIGH);
        digitalWrite(chanled[6], HIGH);
        digitalWrite(chanled[0], LOW);
        digitalWrite(chanled[1], LOW);
       break;
       case 11: //c
       digitalWrite(chanled[0], HIGH);
       digitalWrite(chanled[3], HIGH);
       digitalWrite(chanled[4], HIGH);
       digitalWrite(chanled[5], HIGH);
       digitalWrite(chanled[1], LOW);
       digitalWrite(chanled[2], LOW);
       digitalWrite(chanled[6], LOW);
       break;
       case 12:
       digitalWrite(chanled[1], HIGH);
       digitalWrite(chanled[2], HIGH);
       digitalWrite(chanled[3], HIGH);
       digitalWrite(chanled[4], HIGH);
       digitalWrite(chanled[6], HIGH);
       digitalWrite(chanled[0], LOW);
       digitalWrite(chanled[5], LOW);
       break;
       case 13:  //e
       digitalWrite(chanled[0], HIGH);
       digitalWrite(chanled[3], HIGH);
       digitalWrite(chanled[4], HIGH);
       digitalWrite(chanled[5], HIGH);
       digitalWrite(chanled[6], HIGH);
       digitalWrite(chanled[1], LOW);
       digitalWrite(chanled[2], LOW);
       break;
       case 14:
       digitalWrite(chanled[0], HIGH);
       digitalWrite(chanled[4], HIGH);
       digitalWrite(chanled[5], HIGH);
       digitalWrite(chanled[6], HIGH);
       digitalWrite(chanled[1], LOW);
       digitalWrite(chanled[2], LOW);
       digitalWrite(chanled[3], LOW);
       break;

      }
      delay(500);
      i++;
      if (i>14){
  i=0;}
};
    
  
  // put your main code here, to run repeatedly:

};



}