这是一个用单片机来演奏音乐的程序，很通俗易懂，里面有源程序和HEX烧录文件-This is a single-chip to play music with the procedure, it is easy to understand, which has source code and HEX file burner
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002067s ]
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:0.091118s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002543s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002551s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002131s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003705s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002037s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003252s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014750s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002313s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 314840 [ RunTime:0.001425s ]
