Interactive Specification Of Usb-based Data Acquisition System Design And Implementation

First, this paper analyses particularly the universal usability, functions and system structure of Data Acquiring Systems(DAS), USB Specification, the method of writing WDM device drivers program, the method of writing firmware using Keil C51. Based on before, the flow about how to design a USB oriented DAS is be given , combing a practical universal model.The process are below: hardware design, the process of ports address assignment and the time series analysis; firmware design, the universal firmware frame is provided by Cypress Company, in which the firmware frame is analysed in detail, and we know how to modify the firmware frame to our special (control)functions ;device drivers program design, USB device drivers program is WDM type, the process of designing USB Client drivers programs is be given through theexpaxiaxion of Windows Drivers Model.