该程序为PC机与单片机通过RS-232串行口通信的PC端程序，含界面设计和串口设置-The program for the PC and MCU through the RS-232 serial port of the PC client communication procedures, including interface design and the serial port settings
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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:0.166825s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001330s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004099s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001053s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.028174s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.005073s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 210097 [ RunTime:0.042435s ]
