这是C8051F020单片机读、擦、写串行EEROM芯片M25P40(4M)的驱动程序。全部为自己根据25p40的datasheet编写的，都能够成功使用。M25P40容量大，价格便宜，SPI接口，与8051单片机接口方便。-this is the driver of C8051F serial MCU to the EEROM chip M25P40.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002389s ]
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:0.084367s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002219s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002012s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001991s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003613s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001966s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003280s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016141s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002535s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 132750 [ RunTime:0.001488s ]
