按下按钮时，RNG会在蜂鸣器上随机播放音符。

硬件部件：

• 7段LED显示屏，InfoVue    ×    1个    
• Arduino UNO    ×    1个    
• 蜂鸣器    ×    1个    
• 触觉开关，顶部致动    ×    1个    

软件应用程序和在线服务：

• Arduino IDE

七段显示模型：

• 将Sev Seg的A钩到第二个引脚。
• 将Sev Seg的B钩到第三针。
• 继续直到将Sev Seg的G连接到第8针为止。
• 使用电阻器将Sev Seg的“ Com”接地。
• 将按钮连接到第9针。
• 通过单独的电阻将按钮输出接地。
• 将蜂鸣器连接到第10针。
• 将蜂鸣器的接地连接到与Sev Seg连接的相同电阻。

码：
int a = 2, b = 3, c = 4, d = 5, e = 6, f = 7, g = 8, buzzerPin = 10, buttonPin = 9, rn; //Declares all the variables
void setup() { //Sets the pin
 pinMode(a, OUTPUT);
 pinMode(b, OUTPUT);
 pinMode(c, OUTPUT);
 pinMode(d, OUTPUT);
 pinMode(e, OUTPUT);
 pinMode(f, OUTPUT);
 pinMode(g, OUTPUT);
 pinMode(buzzerPin, OUTPUT);
 pinMode(buttonPin, INPUT);
 Serial.begin(9600);
}
void loop() {
 if(digitalRead(buttonPin) == HIGH){ //Generates random number, matches the number with the seven segment display function, and runs the shuffle loop 20 times when the button is pressed
   for(int ctr = 0; ctr < 20; ctr++){
     rn = random(10);
     if(rn == 0){
       zero();
       tone(buzzerPin, 523);
     }
     if(rn == 1){
       one();
       tone(buzzerPin, 587);
     }
     if(rn == 2){
       two();
       tone(buzzerPin, 659);
     }
     if(rn == 3){
       three();
       tone(buzzerPin, 698);
     }
     if(rn == 4){
       four();
       tone(buzzerPin, 784);
     }
     if(rn == 5){
       five();
       tone(buzzerPin, 880);
     }
     if(rn == 6){
       six();
       tone(buzzerPin, 988);
     }
     if(rn == 7){
       seven();
       tone(buzzerPin, 1047);
     }
     if(rn == 8){
       eight();
       tone(buzzerPin, 1175);
     }
     if(rn == 9){
       nine();
       tone(buzzerPin, 1319);
     }
     delay(75);
     noTone(buzzerPin);
   }
 }
}
void off() { //Turnes off the seven segmant display
 digitalWrite(a, LOW);
 digitalWrite(b, LOW);
 digitalWrite(c, LOW);
 digitalWrite(d, LOW);
 digitalWrite(e, LOW);
 digitalWrite(f, LOW);
 digitalWrite(g, LOW);
}
void zero() { //Displays a zero on the seven segment display
 digitalWrite(a, HIGH);
 digitalWrite(b, HIGH);
 digitalWrite(c, HIGH);
 digitalWrite(d, HIGH);
 digitalWrite(e, HIGH);
 digitalWrite(f, HIGH);
 digitalWrite(g, LOW);
}
void one() { //Displays a one on the seven segment display
 digitalWrite(a, LOW);
 digitalWrite(b, HIGH);
 digitalWrite(c, HIGH);
 digitalWrite(d, LOW);
 digitalWrite(e, LOW);
 digitalWrite(f, LOW);
 digitalWrite(g, LOW);
}
void two() { //Displays a two on the seven segment display
 digitalWrite(a, HIGH);
 digitalWrite(b, HIGH);
 digitalWrite(c, LOW);
 digitalWrite(d, HIGH);
 digitalWrite(e, HIGH);
 digitalWrite(f, LOW);
 digitalWrite(g, HIGH);
}
void three() { //Displays a three on the seven segment display
 digitalWrite(a, HIGH);
 digitalWrite(b, HIGH);
 digitalWrite(c, HIGH);
 digitalWrite(d, HIGH);
 digitalWrite(e, LOW);
 digitalWrite(f, LOW);
 digitalWrite(g, HIGH);
}
void four() { //Displays a four on the seven segment display
 digitalWrite(a, LOW);
 digitalWrite(b, HIGH);
 digitalWrite(c, HIGH);
 digitalWrite(d, LOW);
 digitalWrite(e, LOW);
 digitalWrite(f, HIGH);
 digitalWrite(g, HIGH);
}
void five() { //Displays a five on the seven segment display
 digitalWrite(a, HIGH);
 digitalWrite(b, LOW);
 digitalWrite(c, HIGH);
 digitalWrite(d, HIGH);
 digitalWrite(e, LOW);
 digitalWrite(f, HIGH);
 digitalWrite(g, HIGH);
}
void six() { //Displays a six on the seven segment display
 digitalWrite(a, HIGH);
 digitalWrite(b, LOW);
 digitalWrite(c, HIGH);
 digitalWrite(d, HIGH);
 digitalWrite(e, HIGH);
 digitalWrite(f, HIGH);
 digitalWrite(g, HIGH);
}
void seven() { //Displays a seven on the seven segment display
 digitalWrite(a, HIGH);
 digitalWrite(b, HIGH);
 digitalWrite(c, HIGH);
 digitalWrite(d, LOW);
 digitalWrite(e, LOW);
 digitalWrite(f, LOW);
 digitalWrite(g, LOW);
}
void eight() { //Displays an eight on the seven segment display
 digitalWrite(a, HIGH);
 digitalWrite(b, HIGH);
 digitalWrite(c, HIGH);
 digitalWrite(d, HIGH);
 digitalWrite(e, HIGH);
 digitalWrite(f, HIGH);
 digitalWrite(g, HIGH);
}
void nine() { //Displays a nine on the seven segment display
 digitalWrite(a, HIGH);
 digitalWrite(b, HIGH);
 digitalWrite(c, HIGH);
 digitalWrite(d, HIGH);
 digitalWrite(e, LOW);
 digitalWrite(f, HIGH);
 digitalWrite(g, HIGH);
}