171–180 of 299 posts
It's just a resistor with memory. i.e. its R value can be changed by current and remembered. Wouldn't an inductor with memory in the sense that it's L is changed by voltage or current and remembered be a fifth and a capacitor with a C that is changed and remembered be sixth?
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Interestingly, this is exactly what the chief of HP labs said in this video [1]: That lots of papers noted the effect and talked about anomalies, but no-one made the connection to the memristors before them. He also says that the effect is only really noticeable at nano scales (because it needs incredibly high electric fields). EDIT: on second thought, that's not the case, because the HP memristor is not a memristor…
Nice to see confirmation of that theory from that high up. It seemed extremely logical to me when I heard it the first time and like everything else, in retrospect it is blindingly obvious. I'd hate to see a memristor dropped into a circuit design and being handed the task of 'fixing' spice to produce the correct output. But by the looks of it the usefulness of individual memristors will be quite limited.
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With no history and no pictures. It's useful, but it's not really "wikipedia" anymore :)
Weird side point, but I'd be really interested to hear how people weight the importance of Wikipedia text vs media vs history. For me the first is 99% of the point, but clearly others feel differently.
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With no history and no pictures. It's useful, but it's not really "wikipedia" anymore :)
Weird side point, but I'd be really interested to hear how people weight the importance of Wikipedia text vs media vs history. For me the first is 99% of the point, but clearly others feel differently.
I encourage folks to watch this tech talk by HP Research Labs on the discovery of the memristor and implementation details. It goes into the gory technical details, from the low level physics to the construction of the gates, the truth tables, and the high level computation possibilities once chips are assembled in a crossbar package. > https://www.youtube.com/watch?v=bKGhvKyjgLY
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> Software grows to match the hardware. You mean XML for instance?
Not sure why he was downvoted, xml is a trade off for developer convenience. A trade off we were willing to make because we had disposable bits.
b
"A":"B"
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Not only that but it has the potential to change our entire model of computing, and simplify it tremendously. The unification of storage and computing.
Unification of storage and computing...what does that even mean? I get that having nearly unlimited, fast, persistent storage would be awesome, but that's not a conceptual merging of storage and computing -- but I definitely agree about the simplification.
Those features that are the only things saving modern processors from spending nearly all of their time doing nothing useful while they're waiting for data to be retrieved from main memory.
Look at a Core i7 CPU die, with the L1/L2/L3 cache circled. Understand that many of the remaining transistors are doing things like branch prediction, managing cache coherency, and prefetch and so forth.
http://i.stack.imgur.com/4Z1nU.png
That would be awesome.
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The same reason has a closing tag but does not: HTML is SGML where certain tags can be made optional. XML specifically did away with this and made all close tags mandatory (even on contentless tags, which is why xhtml requires you to do ).
Just to be clear, are some closing tags optional or are all closing tags optional? If the former, how do you know which?
Soooo... this is basically just persistent memory right? HP has been working on the memristor since 2008. Memristors have already been produced in labs by U of Michigan: https://en.wikipedia.org/wiki/Memristor This article seeks to give the image that this is a novel idea that investors can take advantage of. In reality, it is not.
Actually, the cool bit about memristors is that you could treat them like both a transistor for computation or for memory, or flip. Like an fpga. So imagine the difference in an operating system that could retain its running image between reboots, and not have to distinguish things like stack/heap. And could reconfigure more computing resources on the fly and back again. It is... a very different view of computing. E…