Date: 1 Mar 87 03:10:52 GMT
From: firstname.lastname@example.org (Henry Spencer)
Subject: Re: Want to bet he wins a Nobel Prize?
> Then there are Josephson junctions...
> This wasn't possible before because the transistors would dissipate too
> much heat to cool to liquid helium temperatures. Room temperature
> Josephson junctions would blow computing wide open.
Well, maybe not. The cooling problem wasn't the only reason why JJs haven't
swept the field. They are also fundamentally low-gain devices, which makes
it very hard to build working JJ LSI -- the precise control of characteristics
needed to make low-gain devices work well is nearly impossible in LSI. IBM
concluded that the problem wasn't fixable.
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