RS485标准的C51通信程序，只要两个单片机和485芯片就可以实现通信-C51 standard RS485 communication program, as long as the two single-chip and 485 chip communication can be achieved
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001925s ]
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:0.090134s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002354s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001996s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002212s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003596s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002127s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003247s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015636s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002769s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 237280 [ RunTime:0.001191s ]
