Roy J. Tellason
rtellason at verizon.net
Mon Nov 26 11:32:17 CST 2007
On Friday 23 November 2007 19:05, dwight elvey wrote:
> > From: rtellason at verizon.net
> > I notice that even those guys that are building relay computers "cheat"
> > and use a single small solid-state chip for RAM. :-)
> I've been thinking about how one could make a reasonable
> memory, using small reed relays. If one puts a magnet close
> to one end, it will cause the reed to close. Move it back
> some and it will hold until the field is too weak.
> If one set the magnet someplace in the middle of this
> band, one could use the direction of current through the
> coil to set and reset the contacts.
> One could create an array of these for the memory. Placing
> small magnets in opposite directions for adjacent bits would
> keep from building too high a field buildup, in the array.
> I was thinking that one could use small round magnets
> glued to the end of a threaded rod. This could then be adjusted
> to optimize the memory.
> Now all I need is a pile of reed relays.
Dunno if they still sell them or not, but Radio Shack used to sell a pack of
20 reed switches for only a couple of bucks...
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
Information is more dangerous than cannon to a society ruled by lies. --James
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