VC串口编程实例，调试过。使用时，最简单就是将计算机串行发送（TXD）与接收（RXD）短接。-VC serial programming examples tuned. When used, the simplest is to send computer serial (stage) and receiving (RXD) Short.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001932s ]
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:0.085723s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002300s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001920s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002194s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003670s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001982s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003188s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015130s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002618s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 109948 [ RunTime:0.001259s ]
