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From: peters@cubsvax.UUCP (Peter S. Shenkin)
Newsgroups: net.arch
Subject: Re: VERY LARGE main memories: crypt
Message-ID: <540@cubsvax.UUCP>
Date: Sun, 14-Sep-86 21:59:54 EDT
Article-I.D.: cubsvax.540
Posted: Sun Sep 14 21:59:54 1986
Date-Received: Mon, 15-Sep-86 07:31:05 EDT
References: <15505@ucbvax.BERKELEY.EDU> <uiucdcsb.5600054>
Reply-To: peters@cubsvax.UUCP (Peter S. Shenkin)
Organization: Columbia Univ. Bio. CG Fac., NY
Lines: 15

In article <uiucdcsb.5600054> robison@uiucdcsb.CS.UIUC.EDU writes:
>
>						...There are quantum
>limits for the minimum power of switching devices[2].   
>
>[2] "Physics of Computational Systems, " in *Introduction to VLSI Systems*,
>    Mead and Conway, 1980.

This has been the subject of long debate.  Rolf Landauer (I think) and someone 
else reviewed the subject in Scientific American about a year ago.  I believe
the bottom line is that everyone (i.e., even people who publicly supported the
opposite postion) now believes that there are no such limits.

Peter S. Shenkin	 Columbia Univ. Biology Dept., NY, NY  10027
{philabs,rna}!cubsvax!peters		cubsvax!peters@columbia.ARPA