本文为应用于嵌入式电子线路硬件pcb布线方面的书籍，讲解高速66M-200M主频cup的设计方法--A book describes high speed 66M-220M CPU design method. It could be applied in laying out pcb in embedded circuit hardware.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001152s ]
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:0.086116s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001207s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001884s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001159s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003685s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000976s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003329s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015033s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001312s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 124559 [ RunTime:0.001383s ]
