配合单片机I/O口，实现单片机对LCD1602的简单控制，从而实现液晶显示（包括图像显示）的功能。-With single-chip I/O port, to achieve single-chip LCD1602 simple to control, in order to achieve liquid crystal display (including image display) functions.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001087s ]
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:0.070882s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000868s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000996s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.002981s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000821s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003587s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015017s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001156s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 253975 [ RunTime:0.026856s ]
