利用FIFO数据结构,在8051单片机上实现全双工通讯,实现MODBUS通讯协议-Use of FIFO data structure, in 8051 to achieve full-duplex communications, realize MODBUS communication protocol
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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:0.084572s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000951s ]
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SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000971s ]
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SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001068s ]
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