STM32是以Cortex-M3为核的处理器，该例程介绍STM32下如何对实时钟RTC进行操作。RTC可保存时间，由电池供电。-Cortex-M3 based STM32-core processor for the routine introduction STM32 how to operate in real-time clock RTC. RTC to save time, by the battery-powered.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001068s ]
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:0.074661s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001096s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001109s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001022s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003035s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000931s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003688s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.018996s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001712s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 173340 [ RunTime:0.015398s ]
