蜂鸣器控制，本项目中包括两个设计，一个简单的buzzer控制，一个通过buzzer演奏乐曲“梁祝”的示例 -Buzzer control, this project includes two designs, a simple control buzzer, a buzzer play music through the
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001440s ]
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:0.132125s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001514s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001999s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001586s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005537s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001534s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.007173s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018207s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001122s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 228161 [ RunTime:0.012523s ]
