一个基于STC89C52的单片机程序，可以通过按键来不停发送100ms（时间可调）的脉冲，通过定时器控制-STC89C52 microcontroller-based procedures, can be sent through the button to stop 100ms (time adjustable) pulse, through the timer control
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002090s ]
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:0.086496s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001895s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002093s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002249s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003644s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.006195s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003337s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015331s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002728s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 145060 [ RunTime:0.001313s ]
