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- From: roberts@cmr.ncsl.nist.gov (John Roberts)
- Newsgroups: sci.space
- Subject: Re: Shuttle computers
- Message-ID: <BxsMA3.D2o.1@cs.cmu.edu>
- Date: 16 Nov 92 05:07:23 GMT
- Sender: news+@cs.cmu.edu
- Distribution: sci
- Organization: National Institute of Standards and Technology formerly National Bureau of Standards
- Lines: 15
- Approved: bboard-news_gateway
- X-Added: Forwarded by Space Digest
- Original-Sender: isu@VACATION.VENARI.CS.CMU.EDU
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-
- -From: henry@zoo.toronto.edu (Henry Spencer)
- -Subject: Re: What kind of computers are in the shuttle?
- -Date: 14 Nov 92 23:58:37 GMT
-
- -There are also some other little problems, like the fact that the orbiter
- -computers aren't independent systems -- those five main computers operate
- -in very close lockstep for fault tolerance. This isn't just a tougher
- -version of a commercial computer system.
-
- Do you recall how tight the lockstep is? I don't believe I've seen anything
- written on that since before STS-1.
-
- John Roberts
- roberts@cmr.ncsl.nist.gov
-