便于单片机简单使用时钟功能的，对于初学者特别有用，只需要稍微懂得电路，了解做个电子时钟原理即可-Simple and easy to use single-chip clock function, particularly useful for beginners, require only a slight circuit to understand, understand to be a principle of the electronic clock to
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002315s ]
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:0.127490s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.003121s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003287s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002919s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003896s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002088s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003712s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015021s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002518s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 210024 [ RunTime:0.001178s ]
