Re: CPU type idea

On Jul 22, 1:52 am, mcja...@[EMAIL PROTECTED]
 wrote:
> On Jul 21, 11:08 pm, "Alexei A. Frounze" <alexfrun...@[EMAIL PROTECTED]
>
> wrote:
>
>
>
> > On Jul 21, 1:53 pm, "Wolfgang Kern" <nowh...@[EMAIL PROTECTED]
> wrote:
>
> > > Alexei A. Frounze mentioned:
>
> > > > Interfierence of binary signals is considered as erreanous in
> > > > > the digital world. There is no way to recover the original info.
> > > > Not necessarily true. There exist things like error correcting
codes
> > > > and forward error correction:
> > > >http://en.wikipedia.org/wiki/Error_correcting_codes
> > > >http://en.wikipedia.org/wiki/Forward_error_correction
>
> > > Yes, there were also noise-tolerant codes for magnetic tapes
> > > like Manchester and other selfclocking streamer formats.
>
> > > But I see an error in terms of what the OP had in mind with a
> > > deliberate mix of binary signals to produce something useful ...
>
> > Well, in digital signal processing you can get something useful out of
> > mixing digital signals. Examples:
> > - signal filtration
> > - modulation/demodulation
> > - signal detection/recognition through correlation
> > Perhaps there's more to it.
>
> > Alex
>
> I thought I had an amazing idea thinking a CPU can work this way...
>
> isn't there any example of an effect over the distrance of travel that
> culminates two signals for example into another expression of what the
> signal is?
>
> just to see the changing effect be a tangent of the signal sent.. not
> just signal, anything...
>
> ultrasound in a water bath oughta do too, like, send sound that
> vibrates the water and builds together a waveform that is effect of
> the sound.. so give sound that vibrates like to know the sound for how
> it vibrates, then send sound that you say is a math operation and
> expect somewhere in the water for there to be an answer.

There used to be and I believe there still are analog computers which
use analog signals and various analog circuitry or mechanics to do
what our regular digital computers do today.
See http://en.wikipedia.org/wiki/Analog_computer
But as far as I understand those kinds of computers are pretty
unreliable, bulky and consume more energy for the same kind of
workload than the digital ones. In some areas they may still have
uses, though.

You surely can implement the CPU's ALU using some analogue circuitry,
add waves and currents/voltages /forces/pressure in various ways, but
I believe that's very ***bersome.

Alex