c51 直流电机。里面有KEIL编译的源代码，还有protues仿真图。一切都调试通过
-C51 DC motor. KEIL compiler which has source code, there are protues simulation Fig. All debugging through
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001345s ]
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:0.110112s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001196s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001958s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001253s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.004913s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001260s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003608s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015583s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001460s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 187958 [ RunTime:0.001213s ]
