Like a serial port, each USB port on a computer is assigned a unique identification number (port id) by the USB controller.
像串行端口一样，计算机上每一个usb端口都由US b控制器指定了一个惟一的标识数字(端口id)。
The design has implemented the functions of RFID identification, multiple RFID serial number of cycle storage, Reader and PC communications, and other functions.
设计实现了对电子标签的识别、多组电子标签序列号的循环存储、与上位机的通信等功能。
Sales services to international competitors unique product serial number identification, and the establishment of a "warranty CARDS" - tracking management.
销售服务上以国际同行中独有的产品系列号标注，并建立“三包服务卡”式的跟踪管理。
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