转速表：硬件简单，您可以用89c2051代替89c51，p1口做数据输出；p3口做位驱动，int0为转速信号输入-speed : hardware simple and you can replace 89c51 89c2051, p1 I do data output; P3- I do drive, int0 to speed signal input
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000988s ]
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:0.065102s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001259s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001362s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001050s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005813s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001479s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.006462s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.022265s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001742s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 305612 [ RunTime:0.015443s ]
