基于stc89c52实现具有校时模式、定时模式，能够显示月、日、星期等功能的电子钟。-When the realization of the school-based stc89c52 mode, timing mode, can display month, day, week, and other functions of the electronic clock.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002073s ]
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:0.091143s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002478s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001921s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002631s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003676s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002206s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004337s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014782s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002578s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 295333 [ RunTime:0.001190s ]
