最简单的20键PS/2键值读取程序，PS/2的clk接INT0，data接P1_0--A simple read/write program from 20-keys PS/2 keyboard. PS/2 s clk connects to INTO and data connects to P1_0.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000946s ]
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:0.163510s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.002864s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.022369s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.004615s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.008515s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.010440s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.008001s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.032371s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.008309s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 116317 [ RunTime:0.030689s ]
