一个使用USB下载51单片机程序的源程序，是第一手开发，很方便学习单片机的朋友使用-A use of 51 single-chip USB to download the source program is first-hand development, very convenient to study the use of SCM Friend
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002418s ]
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:0.088116s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002291s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001883s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002484s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003630s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002089s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003242s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014708s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002514s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 136189 [ RunTime:0.001137s ]
