Design Of Virtual Instruments Based On USB DAQ

This project mainly use Data acquisition, the USB theory, Virtual instruments theory, MCU theory and some knowledge including software and hardware to perform the design of Virtual instruments based on USB data acquisition.USB has the characters of Plug-and-Play and it also is convenient for use. So the project brings the USB into data acquisition and works along with Virtual instruments. Based on this, I had accomplished circuit design, circuit board PCB making, compiling and debugging firmware program of MCU, compiling WDM program, LabWindows/CVI program and so on, and involving knowledge have analog and digital circuit, C51 Language, Keil C, VC++6.0, USB bus, 2000DDK, Protel 99 Se, LabWindows/CVI 8.0 and so on. After integrated debugging, it has been successful to transmit data from my USB DAQ to PC and accomplish the simple prototype of virtual instruments system based on USB interface.