8９Ｓ51的程序，实现秒表功能秒表C51程序，包含键盘扫描，在数码管上显示各个数字，使用80C51单片机 -89S51 procedures to achieve stopwatch function stopwatch C51 procedures, keyboard scanning, digital control in the various figures show that the use of 80C51 microcontroller
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001408s ]
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:0.090767s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001152s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001286s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003666s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001089s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015087s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001410s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 122651 [ RunTime:0.001254s ]
