c51控制1602液晶显示，适合初学者，硬件测试可用，附含1602液晶说明-C51 control of liquid crystal display 1602 is suitable for beginners, hardware testing is available, with 1602 LCD attached note
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.020047s ]
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:0.109742s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.015825s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.015191s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.007638s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.008676s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.006703s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.018785s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.030256s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001275s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 156813 [ RunTime:0.031479s ]
