用单片机C语言编的通过键盘扫描得到键值的键盘扫描C程序的源代码，可供单片机开发人员参考。-MCU series of the C language keyboard scan keys keyboard scan C program"s source code available to developers SCM reference.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001340s ]
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:0.090468s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001265s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001922s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001256s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003604s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001054s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003289s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014838s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001368s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 307823 [ RunTime:0.001262s ]
