VHDL数字系统设计和工程实践5，包含原理，真值表和原理图，以及VHDL源代码.-VHDL digital system design and engineering practice 4, including the principles, truth table and schematic, as well as VHDL source code.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002639s ]
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:0.097244s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002476s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002132s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.002381s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003682s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.002216s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003627s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015251s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002202s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 173487 [ RunTime:0.001294s ]
