This paper introduces the system structure of USB KEY: the hardware layer, the core driver layer, the standard middle-ware layer and the application layer.
本文介绍了USB KEY的体系结构，由硬件层、核心驱动层、标准中间件层和应用层构成。
This paper introduces the system structure of USB KEY: the hardware layer, the core driver layer, the standard middle-ware layer and the application layer.
本文介绍了USB KEY的体系结构，由硬件层、核心驱动层、标准中间件层和应用层构成。
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