const int  devRFID = 5;
 const int devIButton = 6;

 const int devCD6 = 0x600;   //9位vfd     
 const int devCD7 = 0x700;   
 const int devCD8 = 0x800;
 const int devCD9 = 0x900;   //液晶显示屏32*144
 const int devCD10 = 0xa00;  //液晶显示屏65*132
 const int devCD13 = 0xd00;  //6+8段码显示  显示 6 + 8 字符：41 42 43 44 45 46 31 32 33 34 35 36 37 38

 const int  cmdCD9Off = 0x901;  //背光开
 const int   cmdCD9On = 0x902;  // 关
 const int   cmdCD9Clear = 0x903; //清屏
 const int   cmdCD9All = 0x904;  //满屏

 const int cmdCD6Clear = 0x603;
 const int cmdCD7Clear = 0x703;
 const int cmdCD8Clear = 0x803;
 const int cmdCD9Off = 0x901;
 const int cmdCD9On = 0x902;
 const int cmdCD9Clear = 0x903;
 const int cmdCD9All = 0x904;
 const int cmdCD10Off = 0xa01;
 const int cmdCD10On = 0xa02;
 const int cmdCD10Clear = 0xa03;
 const int cmdCD10All = 0xa04;
 const int cmdCD13Clear = 0xd03;


 //初始化	
 [DllImport("AclasDevices.dll")]
 public static extern void AclasDevice_Initialize();

 [DllImport("AclasDevices.dll")]
 public static extern void AclasDevice_Finalize();

 //客显 如32*144清屏 nCMD：cmdCD9Clear;
 [DllImport("AclasDevices.dll")]
 public static extern void AclasDevice_CustomerDisplayCMD(Int32 nCMD);

 //客显 如32*144显示  123  nDevice: devCD9 ; byte[]：0x31 0x32 0x33 ;  
 [DllImport("AclasDevices.dll")]   
 public static extern void AclasDevice_WriteBytes(int nDevice, byte[] bytes);  

 //RFID IBUTTON 
 public delegate void ASDSOnDataEvent(IntPtr Data, Int32 nSize);   //回调
 [DllImport("AclasDevices.dll")]
 public static extern void AclasDevice_ReadDevice(int nDeviceCMD, ASDSOnDataEvent OnDataEvent);