TI公司模拟电路专家撰写的顶级运算放大器设计指南，可惜是英文的。不过还是值得推荐-TI analog circuit written by the top experts Operational amplifier design guidelines, it is a pity that in English. But it is worthy of recommendation
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.082709s ]
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:0.190368s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001098s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001751s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001120s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003160s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000956s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003878s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015745s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001285s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 127931 [ RunTime:0.026324s ]
