通过按键在3位一体的数码管上显示数字，能显示00~99，但是减法只能从9减到0，在KEILC上编译调试成功-Through the button in one of three digital tube display figures, can show 00 ~ 99, but the subtraction can only be reduced to 0 from 9 in the debugging KEILC compiled successfully
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.002037s ]
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:0.100501s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001255s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001208s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001070s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003135s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000844s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003594s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015471s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001241s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 311222 [ RunTime:0.016266s ]
