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忆阻器(Memristor)——电路的第4种基本元件
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May 2, 2008, 9:40:22 AM
5/2/08
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基础电子学教科书列出三个基本的被动电路元件:电阻器、电容器和电感器;电路的四大基本变量则是电流、电压、电荷和磁通量。任教于加州大学伯克利分校,并且是新竹交通大学电子工程系荣誉教授的蔡少棠(Leon Chua),37年前就预测有第四个元件的存在,即忆阻器(memristor),实际上就是一个有记忆功能的非线性电阻器。
惠普公司实验室的研究人员最近证明忆阻器的确存在,研究论文在5月1日的《自然》期刊上发表。加州大学伯克利分校电机工程和计算机科学系教授蔡少棠,1971年发表《忆阻器:下落不明的电路元件》论文,提供了忆阻器的原始理论架构,推测电路有天然的记忆能力,即使电力中断亦然。惠普实验室的论文则以《寻获下落不明的忆阻器》为标题,呼应前人的主张。蔡少棠接受电话访问时表示,当年他提出论文后,数十年来不曾继续钻研,所以当惠普实验室人员几个月前和他联系时,他吃了一惊。
忆阻器可使手机将来使用数周或更久而不需充电;使个人电脑开机后立即启动;笔记型电脑在电池耗尽之后很久仍记忆上次使用的信息。忆阻器也将挑战掌上电子装置目前普遍使用的闪存,因为它具有关闭电源后仍记忆数据的能力。利用惠普公司这项新发现制成的晶片,将比今日的闪存更快记忆信息,消耗更少电力,占用更少空间。忆阻器跟人脑运作方式颇为类似,惠普说或许有天,电脑系统能利用忆阻器,像人类那样将某种模式(patterns)记忆与关联。
tyh_123
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May 2, 2008, 9:09:26 PM
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其实pn型的管子也可以类似的去使用。
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May 3, 2008, 12:22:22 AM
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PN结可以,只不过还只是类似地模拟其中一部分
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tyh_123
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May 5, 2008, 7:46:28 AM
5/5/08
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差不多,我们学了数电以后发现,模拟的东西转化一下就会成为数字电路了。所谓
数字模拟主要是功能的实现问题。
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May 5, 2008, 9:04:22 AM
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那些只是传统的三种电路,对于现在这第四种电路来看,它那特殊的新特性是以前的三种都无法模拟的。也许只是个小发现,不过潜力很大
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