一个比较简单的试验程序，通过该程序可以学习数码管的字符显示、动态刷新、蜂鸣器发声、中断方式按键的处理。-a relatively simple test procedure, the procedure can learn from the digital control of the characters, dynamic updating, the buzzer and interrupt handling keys.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001311s ]
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:0.090352s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001287s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001898s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001218s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003587s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001068s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003266s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014223s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001258s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 117018 [ RunTime:0.001305s ]
