步进电机程序，用l297 l298作为驱动电路的，程序比较简单，但是能对mcs-51中断有个详细认识-Stepper motor program l297 l298 as a driving circuit, the procedure is relatively simple, but can be interrupted for mcs-51 has a detailed understanding of
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001436s ]
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:0.094219s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001381s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001944s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001356s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003636s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001159s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003259s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015378s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001450s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 316876 [ RunTime:0.001239s ]
