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SD卡驱动
SD_CARD_TIMEOUT 当一个SD卡的操作超出时限，将导致返回错误和该标记被置位
SD_CARD_EXIST 当卡槽内插入了合适的卡体，不管是什么卡，都会使该位被设置；
2014-01-09 15:36:10
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键盘处理程序的任务是：确定有无键按下，判断哪一个键按下，键的功能是什么；还要消除按键在闭合或断开时的抖动。
2017-08-16 10:02:01
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在周二的拆解中，我们将打开一个无线灯，看看
是什么让它如此技术前进。
灯
该灯具是使用爱迪生螺旋配件的LED品种（灯泡的尖端处有带电连接器，而中性连接器本身是螺纹配件）。
2022-09-10 00:20:02
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编译完代码，就打开RTL图，看一下综合出来
是什么样的电路。
2022-09-13 18:20:02
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对被误删的文件，赤兔windows数据恢复工具的恢复效果比别的软件好很多;对于误格的分区，我们同时扫描FAT/ FAT32/ NTFS/ exFAT分区目录结构，不管原来分区是什么类型也能恢复出目录结构层次
2025-06-14 21:50:01
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Abstract:
To expand the scope of monitoring， improve resource utilization， reduce system cost
2013-11-09 22:52:01
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maximum, over placements of that part, of the part filter score on
its location minus a deformation cost
2015-03-15 18:11:20
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It has the advantages of realtime, high reliability and low cost.
2022-03-27 19:30:01
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additional capacitors generally
used by the receivers, minimizing the external component count
and cost
2022-09-03 04:20:01
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order to prolong the life of batteries, reduce system failures, improve system stability and reduce the cost
2023-09-14 14:30:01
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alarm.The alarm has the characteristics of high sensitivity,stable performance,strong practicability,high cost
2023-09-15 00:20:01
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The designed circuit has good coupling, easy operation, low cost, strong practicability and portability
2023-09-19 19:30:01
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measurement and charge with the on-board household charging device.Because of the low charing power,low cost
2023-09-24 18:40:02
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reward.This design uses single-chip language programming,which has the advantages of simple operation,low cost
2023-09-29 08:40:01
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The hardware cost of this system is relatively low, and it has high application and educational promotion
2023-10-04 18:40:02
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effectively reduce the probability of accidents and reduce people’s lives and property lost,and the cost
2023-10-07 10:00:01
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electrical installation, electronic manufacture and single-chip microcomputer programming at a lower cost
2023-10-07 14:20:02
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products because of its outstanding advantages such as simple structure, strong control function, high cost
2023-10-11 22:30:01
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变压器的零序保护的配置原则是什么?答：(1)中性点直接接地电网的变压器应装设零序(接地)保护作为变压器主保护的后备保护和相邻元件接地短路的后备保护。
2013-12-03 08:06:01
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弄了一点代码出来，放在那也没啥用，不如拿上来 给新手看看，一个任务调度的雏形是什么样子的~~~~~~~~~这些代码没有经过优化， 我只求实现任务切换的功能。
2014-01-17 04:01:15
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