This application note describes the design and implementation of a usb mass storage devic using a secure digital card,which should prove useful to developers of usb mass storage solution.This
application may be used as a stand-alone MSD or as a
Secure Digital/Multimedia Card (SD/MMC) reader/
writer interface.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000881s ]
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:0.074617s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001003s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001268s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001041s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003117s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000865s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003633s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015290s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001146s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 413767 [ RunTime:0.021016s ]
