Based on the analysis of principle of Universal Serial Bus, this paper discusses the developing technology of hardware and software about USB testing system.
在分析usb通用串行总线工作原理的基础上，讨论了USB测试系统中有关的硬件和软件开发技术。
Applying virtual instrumentation technology, the author designed the hardware and software of the blower performance testing system.
本文采用虚拟仪器技术，进行了风机状态试验自动测试系统的硬件及软件设计。
Applying virtual instrumentation technology, the author designed the hardware and software of the blower performance testing system.
本文采用虚拟仪器技术，进行了风机状态试验自动测试系统的硬件及软件设计。
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