C8051F320做的USB示波器。简单实现，主要是测试USB速度。实测速度可以到240KBps. 包含单片机程序源码，驱动程序和上位机程序源码。-C8051F320 make the USB oscilloscope. Simple to achieve, mainly to test USB speed. The measured speed to 240KBps. Singlechip procedure contains source code, drivers, and host