多串口调试，可以在同一个机子上连接，也可以用RS-232连接到两个机子上测试串口通讯，-Multiport Serial debugging, you can connect with a machine, can also use RS-232 connected to the two machine test serial communications,
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001218s ]
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:0.086211s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001210s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001828s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001115s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003498s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000958s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003121s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014400s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001296s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 224802 [ RunTime:0.001417s ]
