Albert van der Horst wrote:
> In article <
6d2b5778-d3e5-4a63...@googlegroups.com>,
> <
visua...@rocketmail.com> wrote:
> >Forth is probably the greenest language - helping to reduce the heat!
> >
> >Today I got an Editor's Note from "Dr. Dobb's Update": Dealing With All
> >Our Stuff
> >
> >There it says:
> >"In 1961, Rolf Landauer theorized that there was a fundamental
> >connection between the processing of information and the production of
> >heat. Just last year, researchers at the University of Augsburg in
> >Germany appear to have proven Landauer's theory. To reset a single bit,
> >they showed, generates a minimum amount of heat; and the point is that
> >this is a fundamental limit set not by the design of devices, but by the
> >nature of information itself. Heat dissipation in computer chips is not
> >merely a matter of mechanics, but is inherent in the processing of
> >information."
> >Source:
http://www.drdobbs.com/article/print?articleId=240154150
>
> I've read an article in the Scientific American (a very long time ago)
> that seems to imply that calculation is essentially a reversible process,
> that can be done using infinitesimal energy. (And probably take a near
> infinite time, but that was not clear to me.)
> The only way to generate heat is by destroying information, so it seems.
> I must say I didn't quite understand it, and the dr Dobbs article appeals
> more to my intuition.
I remember an article in Byte, or one of the electrical engineering
journals, about something like reversing the calculation and
electrical energy through the circuits to reclaim the energy. I
forget, it was around 20 years or more ago, but I didn't pay it too
much attention, because it seemed like it might be an April fools joke
or something. I think it might have gotten me thinking about
reclaiming energy lost in calculation. I came up with a heat
reclamation scheme, that since then somebody else applied to server
farms. But the realty is that the little heat that might be left in
such a scheme, can also, to some extent, be reclaimed, improving the
situation further. I'm looking into some pretty trippy ideas.
However, for ultra low powered versions of misc, these sorts of things
are highly desirable.
Steve.