用ＵＳＢ进行数据采集有明显的优越性， 该程序是ＵＳＢ数据采集的界面程序，配合固件程序可以行成完整的数据采集系统．-use USB data acquisition are obvious advantages, The procedure is the USB interface data collection procedures, firmware can tie into a complete line of data acquisition system.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001550s ]
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:0.098982s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001252s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001885s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001236s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003621s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001067s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003186s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014742s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001412s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 242930 [ RunTime:0.005123s ]
