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28377D中USB_Dev_Bulk例程实验

 在做USB_Dev_Bulk实验时候,电脑可以识别设备,但是要显示一个黄色的感叹号,在contrsuit里面寻找了28377的windows_drivers路径,安装里面驱动。但是要显示错误"windows 以找到设备的驱动程序软件,但在试图安转它时遇到错误"。所以这个实验正确而的操作应该是什么呢?