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Thread : LONG LIFE TO THE LIGHT
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i put this here 'cause i think it's newsworthy
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One green choice at a time!
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Yes, you are right on about the transmission of photons instead of electrons and the medium changing from actual metals to ??? I think that is one of the hurdles, what physical medium to use to thansmit these light signals !
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Interesting... I wanne have a 'warp' CPU, sounds cool.
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One green choice at a time!
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Be carefull not to get a "warped" cpu there svol. :-)
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Do you have a link for this? I've been preaching fiber-optic motherboards for years now. Currently, the problem is I/O...it not's a problem to transmit the light on busses using fiber optics, but they can't transform the photons back to electronics FAST enough (opto-isolators do this).
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why "warp" ? |
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the medium will be some kind of a crystal, and it can have hundreds of layers of photonic transistors working at light speeds, so future optical processors would be probably complete systems, with processor core, RAM, ROM and I/O integrated into a single crystal of about a cubic centimeter!
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If you don't mind, could you enlighten us on how opto-isolators work?
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why would one want to convert the signals back to electrical ones? transmision would be through fobre optic cable, processing in the crystals, for I/O they will have optical components, you already have optical mice, all you need is to generate the signals in form of light and thats not too difficult. optical keyboards would be easily designed this way, and the display.., well the LCD display is a optical technology itself! It does need electric field to charge the pixels, but then simple optical->electric convertors will work fine as tranceivers do.
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Because the speed of light, if I'm correct: warp 1=lightspeed=330000km/s.
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Apple is gonan be using .10 micron on G5....
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One green choice at a time!
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Well with that kind of number crunching power perhaps the human race will have a shot at resolving these seemingly insurpassable issues we presently are facing.
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Actually, I was wrong here. It's been a while since I worked with them, but basically it's a type of transistor that uses a light emitting diode for the transmitter (LED) and a phototdiode or photoresistor for the receiver. My mistake was making it sound like this is used to convert Light to electrical current, but it doesn't. It basically converts electrical->light->electrical, so it wouldn't work for the I/O problem.
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Optical components like mice and keyboards still use electric current internally, not light. The problem is that nobody has made a complete IC component that works soley with light including transmission and storage. So we're forced to convert the signal from light back to electricity. Imagine we have the bus to the Processor conducting information by photons. The processor itself still uses electric current. So the problem is transforming this data BACK to electricity, which we have done (photodiodes) but they are not fast enough.
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Here's a link if you want a better explanation of opto-isolators:
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ok, good |
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Ok, about solving stuff that's really complex. Pike, have u studied computer theory or anything? If you haven't, basically the way to find how long a program will run, one uses Big O as it's called. This is a rough way of estimating worst case scenario. Now, many programs, such as factoring inscrease exponentially (that means 2^n)when another input is added. Others, increase by n^2, n^3, etc. For instance, a simple sorting algorithm that starts from the end of an array of numbers, and checks 2 at a time, is O n^2. therefore, regardless of how fast a computer, digital computers will never be able to complete certain tasks. In that case, other means of finding the solution, or better algorithms must be found, but that is not always possible. hence, even if the comp was 20x faster, it still wouldn't necessarily help with the really big problems, such as nuclear bomb simulation, number factoring (which by the way current security systems are based on), etc.
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Ok, my bad for the long explanation, but after you have been reading this stuff for a few days staright with minimal sleep, u begin to think in everything in algorithms......even how u should wake up or the prices at the supermarket
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One green choice at a time!
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Ok, i'm willing to show hand of cards any day, unlike some people, and not talking about you. I have college junior programmer diploma, i don't know what that amounts to in US, most probably not much. And that is from waaaaaaaaay back, i mean 8088 days, gulp! Do not work in this field as my bio attests to. My REAL schooling is "water treatment technician". I won't go on about psychologie, philosophy or religion because thouse as mirky waters indeed.
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Lol. Carl Sagan's. Well, anyway, if you think about it, computers are ironical- they have driven humanity forward, and are also keeping it from advancing. They are powerful enough to do many calculations, yet they can't do all of them in reasonable time. Can't wait for the HTMT and Quantum Computing ( |

