> On Wed, 2006-02-15 at 15:06 +0100, Lembit Soobik wrote:
>
>> We developed the new generation machines using core memory and blocking
>> oscillators (rather than flip-flops, monoflops) because they worked with
>> only one transistor. Transistors were expensive, around 5 to 10 $ a
>> piece.
>>
>> Lembit
>
> That's interesting.  The only computers that I know of using cores for
> logic werebuiltby Elliott Bros.in England.   There is a brief
> description of the logic here
> http://members.ozemail.com.au/~jacksmth/ell803b.htm
>
> I'm currently working on a software "core level" emulation of this
> machine.  Luckily I have a (nearly) complete set of the logic diagrams
> and the descriptive texts for the machine.  So far it's running simple
> programs and I'm just coding up the logic for the flaoting point
> instructions.
>
> Peter


Interesting! Is that Elliott Automation? They were part owners of my
father's company. See
http://sujan.hallikainen.org/cgi-bin/texis.cgi/webinator/search/?pr=hi&query=elliott&xsubmit=Search%3A
.

I remember a "half rack" size computer from them at my father's plant.

Harold

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