Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!hplabs!hpcc05!hpcuhb!hpcuhe!pi
From: pi@hpcuhe.cup.hp.com (Paul Ilgenfritz)
Newsgroups: comp.arch
Subject: Re: Pneumatic computers (yes, air-pressure powered)
Message-ID: <32580033@hpcuhe.cup.hp.com>
Date: 27 May 91 23:13:14 GMT
References: <1991May24.231620.15367@digi.lonestar.org>
Organization: Hewlett Packard, Cupertino
Lines: 4

I think that some of the critical backup computing in advanced military
jets is done with fluid pneumatic devices.  If EMP or other failures
occur, the plane can still land.  Check out some military sources to
confirm.