串行通信程序，发送不是用中断方式，接收用中断方式，适用于程序的调试，液晶显示用的是1602-Serial communication program, sending instead of interrupt mode, receive mode using interrupted for Debugging, liquid crystal display using 1602
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001624s ]
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:0.136500s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001639s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001747s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005722s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001583s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024209s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002079s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 316879 [ RunTime:0.001469s ]
