一个精确的到0.01s的时钟源程序，对于初学VHDL理解很有帮助，只给了源程序没有给出仿真波形-An accurate clock source to the 0.01s for the beginner to understand VHDL helpful not only to the simulation waveform of the source
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001184s ]
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:0.088581s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001144s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002039s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001198s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003652s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001019s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003159s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014722s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001279s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 162154 [ RunTime:0.001375s ]
