diff --git a/digital-clock.ino b/digital-clock.ino
index 8321d19..9cecaf9 100644
--- a/digital-clock.ino
+++ b/digital-clock.ino
@@ -1,20 +1,91 @@
+
+/**
+ * digital clock code for EEE116
+ *
+ * @category digital-clock
+ * @package digital-clock.ino
+ * @copyright Copyright (c) 2019 IoTcat (https://iotcat.me)
+ * @license GNU General Public License 2.0
+ * @version 0.0.1
+ */
+
+
+/*** 引入关键库 ****/
 #include "ovo.h"
-#include "digital-screen.h"
 
 
+/*** 定义初始参数 ****/
+
+//小组组号
+#define GROUP_ID 22
+
+//时钟变换时间间隔 (毫秒)
+#define INTERVAL_TIME 1000
+
+//pin口 - 接译码器1 (显示个位)
+#define DIG_1_1 9   //A
+#define DIG_1_2 10  //B
+#define DIG_1_3 11  //C
+#define DIG_1_4 12  //D
+
+//pin口 - 接译码器2 (显示十位)
+#define DIG_2_1 5   //A
+#define DIG_2_2 6   //B
+#define DIG_2_3 7   //C
+#define DIG_2_4 8   //D
+
+//pin口 - 接开关
+#define SWI_OFF 3
+
+//pin口 - 接reset键
+#define SWI_RESET 4
+
+
+
+/*** 引入自定义库 ****/
+
+#include "digital-screen.h"
+#include "switch.h"
 
 
+/*** 运行初始化 ****/
+
 void setup(){
-  digital_clock_ini();
+
+    //时钟显示屏初始化
+    digital_clock_ini();
+    //开关组件初始化
+    switch_ini();
 }
 
-DigitalClock dig(22);
+
+/*** 实例化组件 ****/
+
+//时钟显示屏实例化
+DigitalClock clock(GROUP_ID);
+//开关组件实例化
+Switch swi(SWI_OFF), reset(SWI_RESET);
+
+
+
+/*** 主循环程序 ****/
 
 void loop(){
 
-  dig.core();
-  dig.hide();
-  dig.show();
+    /*** 主要控制逻辑 ****/
+
+    //如果reset键被按下，重置时钟
+    if(reset.isPressed() == true) clock.reset();
+
+    //如果开关打开，则显示时钟，否则不显示时钟
+    if(swi.getStatus() == true) clock.show();
+    else clock.hide();
+
+
+    /*** 守护进程 ****/
+    clock.core();
+    swi.core();
+    reset.core();
  
 }
 
diff --git a/digital-screen.h b/digital-screen.h
index da408d4..bac9b15 100644
--- a/digital-screen.h
+++ b/digital-screen.h
@@ -2,9 +2,9 @@
 /**
  * digital-screen Functions
  *
- * @category digital-screen
+ * @category digital-clock
  * @package digital-screen.h
- * @copyright Copyright (c) 2019 EEENeko (https://github.com/eeeneko)
+ * @copyright Copyright (c) 2019 iotcat (https://iotcat.me)
  * @license GNU General Public License 2.0
  * @version 0.0.1
  */
@@ -15,6 +15,10 @@
 
 #include "ovo.h"
 
+#ifndef INTERVAL_TIME
+#define INTERVAL_TIME 1000
+#endif
+
 
 #ifndef DIG_1_1
 #define DIG_1_1 9
@@ -48,7 +52,6 @@
 #define DIG_2_4 8
 #endif
 
-
 class DigitalClock{
 
 public:
@@ -88,7 +91,7 @@ public:
         setInterval([&](){
             this->digital_show(this->_cnt % this->_group);
             this->_cnt++;
-        }, 1000);
+        }, INTERVAL_TIME);
     }
 
     inline void hide(){
diff --git a/switch.h b/switch.h
new file mode 100644
index 0000000..6edcceb
--- /dev/null
+++ b/switch.h
@@ -0,0 +1,100 @@
+
+/**
+ * switch Functions
+ *
+ * @category digital-clock
+ * @package switch.h
+ * @copyright Copyright (c) 2019 IoTcat (https://iotcat.me)
+ * @license GNU General Public License 2.0
+ * @version 0.0.1
+ */
+
+
+#ifndef _SWITCH_H
+#define _SWITCH_H
+
+#include "ovo.h"
+
+#ifndef SWI_OFF
+#define SWI_OFF 3
+#endif
+
+#ifndef SWI_RESET
+#define SWI_RESET 4
+#endif
+
+
+class Switch{
+
+public:
+
+    Switch(unsigned short pin = 3, bool type = HIGH){
+        this->_pin = pin;
+        this->_type = type;
+        this->_isPressed = false;
+        this->_status = true;
+    }
+
+    void core(){
+        check_status();
+    }
+
+    bool getStatus(){
+        return _status;
+    }
+
+    bool isPressed(){
+        return _isPressed;
+    }
+
+private:
+    unsigned short _pin;
+    bool _type;
+    bool _isPressed;
+
+    bool _status;
+
+    void set_isPressed(){
+
+        if(digitalRead(this->_pin) == this->_type){
+
+            this->_isPressed = true;
+        }else{
+            this->_isPressed = false;
+        }
+    }
+
+    void check_status(){
+
+        static bool s_fIsPressed = false;
+        set_isPressed();
+
+        // 检测开关键松开动作
+        if(this->_isPressed != s_fIsPressed && this->_isPressed != _type){
+
+            this->_status = !(this->_status);
+        }
+
+    }
+
+};
+
+
+
+
+/**
+ * switch setup
+ *
+ * @Author yimian
+ * @param void
+ * @return void
+ */
+void switch_ini(){
+
+    pinMode(SWI_OFF, INPUT);
+    pinMode(SWI_RESET, INPUT);
+
+}
+
+
+#endif