Re: project

[keithhar@eb5ts4.EBay.Sun.COM (Keith Hargrove)]

> > Hmm, a very interesting idea. This brings up something I read a long time
> > ago. Although I can't remember how it worked, I do remember the term
> > "bubble memory". I think it was supposed to be a low power memory system
> > of some sort. I wonder if this could be adapted to your idea.
>
>Bubble memory was some kind of magnetic storage RAM.  I'm not sure 
>exactly how it worked either.  It seems that almost all research in 
>non-volitle RAM stopped a few years ago.  I'm not sure why, it seems that 
>NVRAM would have many useful applications.
>
> 

I have used bubble memory it slower than a floppy 
it is large and has smalll memory capacity
Intel made some I hade a computer that used them;
4 packes each the size of a pack of cigaretts
and gave about 100K in memeory
the bubble memory works more like a disk then ram
it even has bad blocks
the memeory is made with a magnetic spot like a pice of vcr tape cut to 1/2 in
then some number of read/write heads are added at one end number of heads= bits wide
the memeory is.
then 4 coils are wound two 90 degrees from the last and then the whole thing
is placed in between two magnets
now if a bit is written this makes a magnetic bubble
by pulseing the coils the bubble can be moved
so by moving the bubbles the date can read or written to the magnetic spot