用I/O口控制蜂鸣器的简单C原码，大家可以下载下来参考，程序简单，易实现。-using I/O population control buzzer sounded simple original C code, you can download the reference procedures are simple and easy to achieve.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002107s ]
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:0.089611s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002467s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002534s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002331s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003773s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002142s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003409s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014830s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002381s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 262131 [ RunTime:0.001199s ]
