单片机4×8矩阵键盘的源程序，可以直接使用，并可以选择松手返回和不松手返回-Single-chip 4 × 8 matrix keyboard source code can be used directly, and can choose to let go to return and the return of不松手
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001439s ]
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:0.099494s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001275s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001994s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001266s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003749s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001098s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003360s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015354s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001488s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 147880 [ RunTime:0.001405s ]
