用8251a实现串行口异步方式双机通信，波特率1200bps，采用查询方式发送，中断方式接收。双方平时处在查询键盘、等待中断接收状态，并显示相关提示-8251a achieved using an asynchronous serial interface mode dual-machine communication, baud rate 1200bps, using queries sent, interrupt reception. Look at the two sides usually the keyboard, waiting for interrupt reception status, and display-related tips
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001725s ]
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:0.129558s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001240s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002063s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001502s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003793s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001030s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003309s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015365s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001348s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 233957 [ RunTime:0.034934s ]
