LCD显示和单片机中断定时,单片机不断中断，通过中断计时，当一秒时间到，调用显示函数在LCD上显示时间
-LCD display and single-chip timer interrupt, microcontroller constantly interrupted by interruption of time, when the second time that call functions in the LCD display to show time
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001515s ]
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:0.095847s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001237s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001292s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003845s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001193s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001580s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 168473 [ RunTime:0.004190s ]
