本程序可以实现对串口的简单操作，祥细的功能可以从代码中得到，要是有什么问题可以从中得到帮助。-this procedure can be achieved on a simple serial port operation, the wound from the functional code can be, if any problem will be able to receive help.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001258s ]
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:0.089434s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001203s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001933s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001270s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003721s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001050s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003353s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015205s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001321s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 282800 [ RunTime:0.001281s ]
