做一个电子钟：利用定时器0定时中断，控制电子钟走时；利用单片机上的六个数码管显示时、分、秒。-An electronic clock to do: Using Timer 0 interrupt timing, control of electronic bell away the use of the six single-chip digital display hours, minutes and seconds.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001418s ]
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:0.075977s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001264s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001276s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000912s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003133s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000857s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004046s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014567s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001077s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 177117 [ RunTime:0.025925s ]
