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From: kludge@grissom.larc.nasa.gov ( Scott Dorsey)
Newsgroups: comp.arch
Subject: Re: Pneumatic computers (yes, air-pressure powered)
Message-ID: <1991May28.181003.5672@news.larc.nasa.gov>
Date: 28 May 91 18:10:03 GMT
References: <1991May24.231620.15367@digi.lonestar.org> <78170002@otter.hpl.hp.com>
Sender: news@news.larc.nasa.gov (USENET Network News)
Reply-To: kludge@grissom.larc.nasa.gov ( Scott Dorsey)
Organization: NASA Langley Research Center
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In article <78170002@otter.hpl.hp.com> tgg@otter.hpl.hp.com (Tom Gardner) writes:
>About 8 years ago I undertook a feasibility study to determine whether
>fluidic/hydraulic logic should be replace by microprocessors in a certain
>application area. The conclusion: hydraulic logic was better.

   I recommend that you take a look inside an automatic transmission.  It's
far from being a von Neumann machine, but it is definitely real logic.
--scott