里面含有含有5个不同的源代码。他们有是对51内部资源的编程，也有用avr编写的一些例子，希望对大家有帮助-containing five different source code. They have 51 of the internal resources of the program, avr also useful to prepare some examples, and I hope to be helpful
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51程序库.txt A V R 的P B 口变速移位.txt 音乐演示程序.txt 单总线程序.txt 电脑时钟.txt
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001574s ]
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:0.121249s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001290s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001899s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001467s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005466s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001108s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003827s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.020736s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001789s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 308887 [ RunTime:0.001620s ]
