实现web多文件上传的客户端代码。ActiveX实现。提供文件浏览，选取，以及读取操作，可配合XMLHttp来实现多文件上传-achieve more web file upload client code. ActiveX achieve. Documents browser, select and read operations, it can tie XMLHttp to achieve more file uploads

用串口驱动的读卡器，采用网页交互界面，可以读出卡的序列号，其他的可自行改动，使用自定义控件实现底层交互。-Serial driver card reader, using the Web interface, you can read out the serial number of the card, and other self-alteration, use custom controls to achieve the underlying interaction.