可以用4*4矩阵键盘调整的数字钟，通过动态扫描显示在四位数码管上。-Can use 4* 4 matrix keyboard adjust the digital clock, through the dynamic scan is displayed in the four digital tube.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.014262s ]
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:0.087185s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001050s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001255s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001026s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003177s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000799s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003721s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014407s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001123s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 128481 [ RunTime:0.056692s ]
