用VC演示的串口通讯程序，是学习用VC进行通讯变成的好材料，演示了通讯控件的使用方法-VC demonstration of Serial communication process is learning to communicate with VC into the good materials, demonstration of the use of communications control methods
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001970s ]
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:0.086794s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002780s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002131s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002364s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003694s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002171s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004470s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018770s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002687s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 125978 [ RunTime:0.001338s ]
