全面的介绍了串口通信的知识，通过实例介绍了如何编程实现串口通信程序-Overall introduction bunches of mouthfuls of knowledge of communication, how does it introduce programming realization bunches of mouthfuls of communication procedure through instance
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001301s ]
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:0.090619s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001236s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001892s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001227s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003657s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001062s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003262s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014865s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001792s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 311548 [ RunTime:0.001544s ]
