*updating* 8088's

Date: Mon, 26 Nov 2007 13:15:02 -0500> From: ray at arachelian.com> To: > Subject: Re: *updating* 8088's> > Roy J. Tellason wrote:> > 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. :-)> >>> > >> Hi> >> 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.> >> > ..> >> > 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...> >> > > > Hmm... Wonder if it's possible to build a relay without a spring on the > switch. That is, you have to send current with one polarity to set the > switch to a 1 and reverse polarity to set a zero - sort of what core > memory does with rings... I suppose this could instead be done by > attaching a magnet to the switch, or using magnet as the thing inside > the switch body, or better yet maybe a relay with a ball with a set of > contacts as the switch and two magnets, one on each opposite side... > you'd energize one coil for a "1" and the other for a "0" > > Hmm, could even be done with a solenoid and use the mechanical part of > it to touch a wire for output. :-) Wouldn't really be a relay, but > pretty close.> >