本书阐述了用vc++来开发usb接口的程序。开发环境：vc6.0，格式：pdf-The book described by vc++ To develop procedures for usb interface. Development Environment: vc6.0, format: pdf

使用vc++开发pc端usb应用软件实例，上传下载一个语音压缩文件，将该上传的文件转成wave格式，可实现pc播放-realize the usb application example.upload and download a file.which can convertSpeech compression file to*.wave format file.and play it in pc.

Collision avoidance at intersection for vehicles message format.