51单片机作为主站的MODBUS通信协议，可实现读写从站寄存器的值 -51 MCU as the main station MODBUS communication protocol can realize the value of register read and write from the point
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001852s ]
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:0.140477s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001780s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.003022s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001503s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006303s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001563s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004735s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.017526s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001473s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 195379 [ RunTime:0.001418s ]
