简介
红外通信是实现两台设备间无线、点对点通信的一种低成本方法。成立于1994年的INFRARED DATA ASSOCIATION(常简称为IRDA）致力于开发短距离红外传输通信的标准方法。这些标准已经过持续改进，使用日益广泛。现在，众多设备实现了IRDA标准规范，包括计算机、打印机、PDA、手机、手表和其他仪器。
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001297s ]
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:0.099229s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001288s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001249s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001048s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003179s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001162s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004485s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.016438s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001162s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 554619 [ RunTime:0.019747s ]
