程序描述：这个程序利用89S51连接DAC0800，然后通过Timer0
的控制不停地送出三角波 */-Description: 89S51 use this procedure to connect DAC0800, and then through the Timer0 kept out of the control triangle wave* /
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001876s ]
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:0.080346s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001141s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001264s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001199s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003194s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.004091s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003874s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.022371s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001248s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 177629 [ RunTime:0.024791s ]
