模拟串口的实用程序，很多没有串口的单片机可以借鉴，或者需要多个串口的人也可以借用-Simulation of serial utility, not a lot of single-chip serial port can learn from, or those who require multiple serial ports can also be borrowed
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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:0.094840s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002710s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002053s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004294s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002089s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015557s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002525s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 243571 [ RunTime:0.001371s ]
