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自己写的《u-boot-1.2.0移植手册》,70多页,献给boot爱好者!
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国庆玩题----40∶3分频答案
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发一本李瀚荪的《电路》上
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DIY了个点阵屏时钟!用51控制
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请高手讲下此呼吸灯电路的原理
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