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- Path: sparky!uunet!caen!rphroy!kocrsv01!c23st
- From: c23st@kocrsv01.delcoelect.com (Spiros Triantafyllopoulos)
- Newsgroups: sci.space
- Subject: Re: What kind of computers are in the shuttle?
- Message-ID: <1992Nov15.162444.6443@kocrsv01.delcoelect.com>
- Date: 15 Nov 92 16:24:44 GMT
- References: <BxKo4I.F9r.1@cs.cmu.edu> <1992Nov14.020910.15122@access.usask.ca> <1992Nov14.165511.23013@murdoch.acc.Virginia.EDU>
- Sender: news@kocrsv01.delcoelect.com (Usenet News Account)
- Distribution: sci
- Organization: Delco Electronics Corp.
- Lines: 26
-
- In article <1992Nov14.165511.23013@murdoch.acc.Virginia.EDU> rbw3q@rayleigh.mech.Virginia.EDU (Brad Whitehurst) writes:
- > I'm sure that they have to be rad-hard, vibration resistant,
- >and otherwise much tougher than Compaqs. I seem to remember that the
- >old computer's memory was the old style magnetic "core" memory. Is
- >that correct? And what kind of memory does the new unit use? That
- >could explain a lot of the power consumption! I recall that when
- >designed, radiation induced errors in semiconductor RAM was a big
- >worry. Somebody in the know can verify/correct this impression.
-
- Yes.
-
- In fact, one of our divisions still makes 'core' memory, or today's
- equivalent, for just that reason.
-
- The analogy presented is the same one as when microprocessors
- found their way from TRS-80 or IBM PC compatibles began making their
- way into cars. We don't have the radiation problem of course :-) but
- have lots of all the other problems to worry about; I don't know how
- close to space-spec our stuff is but the specs of what goes under the
- hood are fairly tough...
-
- Spiros
- --
- Spiros Triantafyllopoulos c23st@kocrsv01.delcoelect.com
- Software Technology, Delco Electronics (317) 451-0815
- GM Hughes Electronics, Kokomo, IN 46904 [A Different Kind of Disclaimer]
-