PIC18F4550_USB开发原代码，可以给需要用单片机开发USB通信使用参考-PIC18F4550_USB development of the original code, can require the development of USB communication using single-chip reference
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001992s ]
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:0.088206s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002977s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002023s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002518s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004798s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002344s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004675s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.020385s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002621s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 131337 [ RunTime:0.001129s ]
