This article studied USB interface key technology, put forward the actual solution.
文中还对usb接口硬件的关键技术进行了研究，提出了实际解决方案。
USB has been a PC standard interface which can transfer data in high speed.
通用串行总线USB已成为PC的标准接口，它可以实现高速的数据传递。
Previously, consumers have to pay extra money to buy apple USB data interface.
此前，消费者不得不额外花钱购买苹果转usb数据转接口。
Some complex chip support both USB master interface an slave interface.
一些复杂的芯片能同时提供USB主机接口和USB从机接口。
Interface - USB (Universal Serial Bus) 2.0 (High Speed) is recommended for best performance.
接口-USB(通用串行总线)2.0(高速)被推荐为最佳性能。
Interface - USB (Universal Serial Bus) 2.0 (High Speed) is recommended for best performance.
接口-USB(通用串行总线)2.0(高速)被推荐为最佳性能。
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