USB 数据采集系统软件设计需要包括两部分：一是 USB 设备端的单片机软
件，主要完成 USB 协议处理与数据交换以及其他应用功能程序。二是 PC 端的程序， 由 USB 设备驱动程序和应用程序两部分组成， Cypress
公司的开发包中提供了一个通用驱动程序，我们对该驱动程序进行了封装，完成
应用程序 USB 操作系统的接口功能
文 件 列 表
VideoEXE ReadMe.txt resource.h StdAfx.cpp StdAfx.h VideoEXE.clw VideoEXE.cpp VideoEXE.dsp VideoEXE.dsw VideoEXE.h VideoEXE.plg VideoEXE.rc VideoEXEDlg.h res VideoEXE.ico VideoEXEDlg.cpp VideoEXE.opt VideoDLL.dll res www.pudn.com.txt
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001420s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.094026s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001426s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001925s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001341s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003750s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001155s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003210s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014517s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001575s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 62390 [ RunTime:0.001513s ]
