请设计一个基于ArduinoUNO开发板的智能控制系统，系统包含带上拉电阻的按键模块、带上拉电阻的LED指示灯、数码管模块和舵机模块，具体功能要求如下。当按键按下LED指示灯常亮，舵机位于0度位置。（20分）当按键按下LED指示灯常亮，舵机位于0度位置，并且舵机从初始0度运行至175度。（20分）当按键按下LED指示灯常亮，舵机位于0度位置，并且舵机从初始0度运行至175度，然后从175度返回至0度，并循环摆动（30分）数码管同步显示舵机摆动次数，（0度~120度 ~0度）

首先，需要准备以下硬件：

- Arduino UNO开发板
- 按键模块
- LED指示灯
- 数码管模块
- 舵机模块

接下来，我们可以使用下面的代码实现上述要求：

#include <Servo.h>

#define BUTTON_PIN 2
#define LED_PIN 3
#define SERVO_PIN 9
#define DIGIT1_PIN 4
#define DIGIT2_PIN 5
#define DIGIT3_PIN 6
#define DIGIT4_PIN 7

int buttonState = 0;
int servoAngle = 0;
int servoDirection = 1;
int servoCount = 0;

Servo servo;

void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  pinMode(LED_PIN, OUTPUT);
  pinMode(DIGIT1_PIN, OUTPUT);
  pinMode(DIGIT2_PIN, OUTPUT);
  pinMode(DIGIT3_PIN, OUTPUT);
  pinMode(DIGIT4_PIN, OUTPUT);
  servo.attach(SERVO_PIN);
}

void loop() {
  buttonState = digitalRead(BUTTON_PIN);

  // 按键按下
  if (buttonState == LOW) {
    digitalWrite(LED_PIN, HIGH);

    // 舵机从0度转到175度
    for (int i = 0; i <= 175; i++) {
      servo.write(i);
      delay(15);
    }

    // 舵机从175度转回0度
    for (int i = 175; i >= 0; i--) {
      servo.write(i);
      delay(15);
    }

    // 循环摆动
    while (1) {
      // 舵机从0度转到175度
      for (int i = 0; i <= 175; i++) {
        servo.write(i);
        delay(15);
      }

      // 舵机从175度转回0度
      for (int i = 175; i >= 0; i--) {
        servo.write(i);
        delay(15);
      }

      servoCount++;
      displayNumber(servoCount);

      delay(1000);
    }
  } else {
    digitalWrite(LED_PIN, LOW);
    servo.write(0);
  }
}

void displayNumber(int number) {
  int digit1 = number / 1000;
  int digit2 = (number / 100) % 10;
  int digit3 = (number / 10) % 10;
  int digit4 = number % 10;

  digitalWrite(DIGIT1_PIN, HIGH);
  digitalWrite(DIGIT2_PIN, LOW);
  digitalWrite(DIGIT3_PIN, LOW);
  digitalWrite(DIGIT4_PIN, LOW);
  displayDigit(digit1);

  digitalWrite(DIGIT1_PIN, LOW);
  digitalWrite(DIGIT2_PIN, HIGH);
  digitalWrite(DIGIT3_PIN, LOW);
  digitalWrite(DIGIT4_PIN, LOW);
  displayDigit(digit2);

  digitalWrite(DIGIT1_PIN, LOW);
  digitalWrite(DIGIT2_PIN, LOW);
  digitalWrite(DIGIT3_PIN, HIGH);
  digitalWrite(DIGIT4_PIN, LOW);
  displayDigit(digit3);

  digitalWrite(DIGIT1_PIN, LOW);
  digitalWrite(DIGIT2_PIN, LOW);
  digitalWrite(DIGIT3_PIN, LOW);
  digitalWrite(DIGIT4_PIN, HIGH);
  displayDigit(digit4);
}

void displayDigit(int digit) {
  switch (digit) {
    case 0:
      digitalWrite(A_PIN, HIGH);
      digitalWrite(B_PIN, HIGH);
      digitalWrite(C_PIN, HIGH);
      digitalWrite(D_PIN, HIGH);
      digitalWrite(E_PIN, HIGH);
      digitalWrite(F_PIN, HIGH);
      digitalWrite(G_PIN, LOW);
      break;
    case 1:
      digitalWrite(A_PIN, LOW);
      digitalWrite(B_PIN, HIGH);
      digitalWrite(C_PIN, HIGH);
      digitalWrite(D_PIN, LOW);
      digitalWrite(E_PIN, LOW);
      digitalWrite(F_PIN, LOW);
      digitalWrite(G_PIN, LOW);
      break;
    case 2:
      digitalWrite(A_PIN, HIGH);
      digitalWrite(B_PIN, HIGH);
      digitalWrite(C_PIN, LOW);
      digitalWrite(D_PIN, HIGH);
      digitalWrite(E_PIN, HIGH);
      digitalWrite(F_PIN, LOW);
      digitalWrite(G_PIN, HIGH);
      break;
    case 3:
      digitalWrite(A_PIN, HIGH);
      digitalWrite(B_PIN, HIGH);
      digitalWrite(C_PIN, HIGH);
      digitalWrite(D_PIN, HIGH);
      digitalWrite(E_PIN, LOW);
      digitalWrite(F_PIN, LOW);
      digitalWrite(G_PIN, HIGH);
      break;
    case 4:
      digitalWrite(A_PIN, LOW);
      digitalWrite(B_PIN, HIGH);
      digitalWrite(C_PIN, HIGH);
      digitalWrite(D_PIN, LOW);
      digitalWrite(E_PIN, LOW);
      digitalWrite(F_PIN, HIGH);
      digitalWrite(G_PIN, HIGH);
      break;
    case 5:
      digitalWrite(A_PIN, HIGH);
      digitalWrite(B_PIN, LOW);
      digitalWrite(C_PIN, HIGH);
      digitalWrite(D_PIN, HIGH);
      digitalWrite(E_PIN, LOW);
      digitalWrite(F_PIN, HIGH);
      digitalWrite(G_PIN, HIGH);
      break;
    case 6:
      digitalWrite(A_PIN, HIGH);
      digitalWrite(B_PIN, LOW);
      digitalWrite(C_PIN, HIGH);
      digitalWrite(D_PIN, HIGH);
      digitalWrite(E_PIN, HIGH);
      digitalWrite(F_PIN, HIGH);
      digitalWrite(G_PIN, HIGH);
      break;
    case 7:
      digitalWrite(A_PIN, HIGH);
      digitalWrite(B_PIN, HIGH);
      digitalWrite(C_PIN, HIGH);
      digitalWrite(D_PIN, LOW);
      digitalWrite(E_PIN, LOW);
      digitalWrite(F_PIN, LOW);
      digitalWrite(G_PIN, LOW);
      break;
    case 8:
      digitalWrite(A_PIN, HIGH);
      digitalWrite(B_PIN, HIGH);
      digitalWrite(C_PIN, HIGH);
      digitalWrite(D_PIN, HIGH);
      digitalWrite(E_PIN, HIGH);
      digitalWrite(F_PIN, HIGH);
      digitalWrite(G_PIN, HIGH);
      break;
    case 9:
      digitalWrite(A_PIN, HIGH);
      digitalWrite(B_PIN, HIGH);
      digitalWrite(C_PIN, HIGH);
      digitalWrite(D_PIN, HIGH);
      digitalWrite(E_PIN, LOW);
      digitalWrite(F_PIN, HIGH);
      digitalWrite(G_PIN, HIGH);
      break;
  }
}

这段代码包含了按键模块的检测、LED指示灯的控制、舵机运动的控制和数码管模块的显示。其中，舵机运动部分使用了 for 循环来让舵机从初始角度到目标角度旋转，并使用 while 循环来让舵机循环摆动。同时，使用了 displayNumber 函数来将舵机摆动次数显示在数码管上。