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From: jewett@hpl-opus.HP.COM (Bob Jewett)
Newsgroups: comp.misc
Subject: Re: NSA's googol ad
Message-ID: <62760001@hpl-opus.HP.COM>
Date: Mon, 7-Dec-87 14:35:44 EST
Article-I.D.: hpl-opus.62760001
Posted: Mon Dec  7 14:35:44 1987
Date-Received: Sun, 13-Dec-87 09:40:59 EST
References: <458@gtx.com>
Organization: HP Labs, Instrument Tech. Dept., Palo Alto, CA
Lines: 8

> Do they have the technology to count at  rate of 10^90 Hz?

    The fastest counter I know of was described by Clark Hamilton, et al. in
    IEEE Electron Device Letters, (EDL-3, 1982).  It counted at 140GHz, or
    1.4*10^11.  The fastest counters that could be used with practical
    computing circuits count within a factor of 10 of 1GHz.

    Bob Jewett   jewett@hplabs