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Date: 1 Mar 87 03:10:52 GMT
From: linus!utzoo!  (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.
Legalize			Henry Spencer @ U of Toronto Zoology
freedom!			{allegra,ihnp4,decvax,pyramid}!utzoo!henry

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