对于想学用vb写usb的朋友，可以参考的资料~-wanted to learn to use Visual Basic to write usb friends, they can refer to the information -

SIMPLE EXAMPLE This example for comunication between PIC 18F4550 an PC with Visual Basic connected in USB PORT. Its compose for Firmware, Program an Proteus Diagram. Enjoy it.!

PIC18F4550 microcontroller pic accomplished many projects based on the IO card and have visual basic source code open source project developed at müasit PIC18F4550 analog input and digital input and output ports, a USB port, a lot of out of control,

DLP Discovery 4100 数字微镜(DMD)空间光开关光调制器开发系统 1.全面兼容德州仪器TI DLP D4100 开发系统. 能够支持1920X1080 DMD(DMD微镜为10.6微米,本征分辨率为1920X1080) 数字微镜(DMD)空间光开关光调制器开发系统 2. 1024 X 768 的DMD(4:3)有两种微镜结构，一种是13.68 微米， 对角线长度为0.7 英寸；另一种是10.8 微米的，对角线长度为0.55 英寸；我们系统都能支持