与先前上传的文件一样，为通信系统中am调制与解调的matlab程序实现，并仿真实现，程序各行均有完整的说明，简明易懂！-Previously uploaded files, as communication systems for am modulation and demodulation matlab program, and Simulation, procedures, both the description of a complete, concise and understandable!
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001233s ]
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:0.086779s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001156s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001985s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001174s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003747s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001009s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003279s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014774s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001245s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 85239 [ RunTime:0.001281s ]
