常用的运算放大器需要的是正负电源，但是如果你的系统只能提供单一的电源的话，为了能够使你的运放正常工作，推荐看看这个资料-common Operational Amplifiers need is plus or minus power, but if your system can only provide a single power supply, in order to make your Mancin normal work, recommend a look at this information
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001887s ]
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:0.084307s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001719s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002154s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003529s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002004s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015265s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002345s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 127983 [ RunTime:0.001020s ]
