用VB实现USB功能，主要是通过调用EasyD12.dll动态连接库函数,控制USBU端对 DP-51学习板24WC02时行读写控制。-VB USB functions, mainly through call EasyD12.dll DLL function, USBU-right control of DP-51 learning at the plate WC02 24 firms control read and write.

keil 程序，能实现信号的倍频采样，并将包络值送回上位机，实现上、下位机的通讯-It is a C language，it create a function that the computer can communicate with PC

主要功能为，从USB总线读取延时参数，单片机延时发送内存缓冲区的一个字节数据到USB总线，每传送一个字节数据查询USB总线是否有停止USB总线通信命令，如有停止USB总线通信命令，则重新开始检查串口握手信号，开始下一次USB总线通信。 -Main function is to read from the USB bus delay parameters, single-chip delay sending a byte of data memory buffer to the USB bus

STM32单片机控制触摸屏，用USB实现控制鼠标的功能-STM32 single-chip microcomputer control, touch screen, with USB to control the mouse function