轻松玩51单片机-畅读网

　　　　

轻松玩51单片机

作者：杨百军

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计算机网络 >> 软硬件开发

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内容简介:

本书内容共3篇19章，完整展现了一位51单片机工程师成长的经历。51单片机共有21个特殊功能寄存器，而需要重点掌握的只有6个（需要熟练掌握对其位的操作），因此学习单片机其实很简单：学会6个寄存器的使用就学会了51单片机程序设计。这样，如果每天掌握1个寄存器，那么6天就能学会51单片机的使用。

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SELECT `id`,`name` FROM `ls_goods_category` WHERE `id` = 35 LIMIT 1 [ RunTime:0.000698s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.000803s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.000799s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1752133211 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:0.470915s ]

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