PIC16F877实现按键扫描和数码管显示、蜂鸣片同时DD响，当按键下时，数码管加一，蜂鸣片DD响两次。-PIC16F877 to achieve key-scan and digital tube display, beep sound piece at the same time DD, when the button when you are not, the digital control plus one, beep piece DD ring twice.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001377s ]
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:0.089775s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001201s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001905s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001262s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003725s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001045s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003164s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014640s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001279s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 311052 [ RunTime:0.001656s ]
