一个多线程发送并口控制信号的程序，控制信号的频率达到微秒级-a multithreaded parallel port control signals sent to the procedures, the frequency control signal to achieve microsecond
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001313s ]
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:0.091634s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001257s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001279s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003661s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001091s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015288s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001465s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 124663 [ RunTime:0.001541s ]
