VHDL数字系统设计工程实践，包含实验的原理，真值表和结构图描述，以及相关的VHDL代码。-VHDL digital system design engineering practice, including the principle of the experiment, truth table and chart descriptions, and associated VHDL code.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001156s ]
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:0.083022s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000880s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001111s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003271s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000860s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003651s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015821s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001296s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 173393 [ RunTime:0.015351s ]
