使用IA4421无线射频芯片传输数据，发送端通过串口每次发送多字节，接收端将接收到的数据显示在上位机上。-IA4421 chip using radio-frequency transmission of data through the serial port for each sender to send multi-byte, the receiver will receive the data displayed in the upper machine.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000985s ]
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:0.059514s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000975s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001112s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000923s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.006759s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000967s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003673s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015361s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001131s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 242052 [ RunTime:0.015533s ]
