这是在51单片机上实现的完整功能的计算器源代码，用c写成，有利于帮助我们更好的学习单片机的开发-This is the 51 SCM achieve the functional integrity of the source code calculator, and c languages, will help us to better study the development of SCM
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001387s ]
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:0.086087s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.003354s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002132s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001163s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003619s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000988s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003195s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015119s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001369s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 232126 [ RunTime:0.005706s ]
