PC机和单片机之间通过RS232传输数据的同步协议，以包形式收发数据，可以发送任何数据。-PC machine and MCU via RS232 to transfer data between the synchronization protocol to send and receive data packet format, you can send any data.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.005521s ]
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:0.105239s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001498s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.005279s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003966s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001007s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001087s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 185525 [ RunTime:0.019400s ]
