數據采集/波形發生系統是信息獲取和傳遞的重要手段，是電子測控技術中至關重要
的環節。本系統采用虛擬儀器設計思想和USB2.0 總線通信技術，設計并完成了四通道高速數據采集器和兩通道高精度波形發生器。本文主要從硬件和軟件設計兩個方而論述了數據采集/波形發生器的開發過程，重點闡述了硬件設計的原理、固件程序的設計思想、動態庫的設計、應用程序的設計、固件下載驅動程序的開發以及inf 文件編寫。
關鍵字：USB2.0,數據采集，固件，動態庫
Abstract: The system of data acquisition and wave generator is an important method to acquire and transmit the information and a necessary part in measure-control technology. This thesis, adopting the idea of VI based on USB2.0, designed and realized a high speed acquirer with four channels and high precision wave generator with two channels. This paper discuss the process of designing and realizing data acquisition and wave generator primarily in the aspect of hardware and software, and the software includes the design of firmware program, Dynamic Link Library (DLL),application program, firmware-download driver development and encode of the inf file.
Key word: USB2.0, data acquisition，firmware，Dynamic Link Library