搜索 - 科创

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引用第1楼jijiwaiwai于2009-06-29 00:26发表的 :其实我是想买一个《The 　big bang theory》sheldon背的那个，美国国土安全部推荐的大急救包呵呵~对背...

引用 RodTech:拓展:a history of z measurement，参考古人发了贴。千古难题:资料找中文版难还是学英文难。到了一定阶段，呵呵。 @张静茹：你为什么还不学英语

额，我以前用分立IC做过，两位数就用了11个芯片，单用CD40110似乎可以（加/减计数器-译码器-带进位）这是我以前做的分立IC计数器：https://www.kechuang.org/t/4055...

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