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Article #11829Re: Pneumatic computers (yes, air-pressure powered)
From: Tom Gardner
Date: Tue, 28 May 1991 08:01
Date: Tue, 28 May 1991 08:01
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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. The area was sequencing interlocks for the underwater gas/oil valves on unmanned offshore oil platforms. Gory technical details: running pressure was 2000-4000psi. AND gates cost $60 each. Simple flip-flops were available.
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!sdd.hp.com!hplabs!otter.hpl.hp.com!otter!tggReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!wuarchive!sdd.hp.com!hplabs!otter.hpl.hp.com!otter!tgg From: tgg@otter.hpl.hp.com (Tom Gardner) Newsgroups: comp.arch Subject: Re: Pneumatic computers (yes, air-pressure powered) Message-ID: <78170002@otter.hpl.hp.com> Date: 28 May 91 08:01:48 GMT References: <1991May24.231620.15367@digi.lonestar.org> Organization: Hewlett-Packard Laboratories, Bristol, UK. Lines: 10