Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/5/84; site mordor.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!mtuxo!mtunh!mtung!mtunf!ariel!vax135!timeinc!phri!pesnta!amd!amdcad!decwrl!decvax!genrad!mit-eddie!think!harvard!seismo!ut-sally!mordor!@S1-A.ARPA,@MIT-MC.ARPA:Purtill.SIPB@MIT-MULTICS.ARPA From: @S1-A.ARPA,@MIT-MC.ARPA:Purtill.SIPB@MIT-MULTICS.ARPA Newsgroups: net.space Subject: Re: Shuttle computers Message-ID: <2453@mordor.UUCP> Date: Sat, 29-Jun-85 20:54:32 EDT Article-I.D.: mordor.2453 Posted: Sat Jun 29 20:54:32 1985 Date-Received: Wed, 3-Jul-85 07:55:01 EDT Sender: daemon@mordor.UUCP Lines: 17 From: Mark Purtill Those of you who have been wondering about the space shuttles computers might want to chack out the September, 1984, issue of the Communications of the ACM. It's got a special section on "computing in space," including an interview with some of the people at IBM who developed the computers. For instance, it tells one that each computer weighs about 120 lbs (55 kg) and that there are five, one of which is a backup which runs special software written independently by Rockwell. It seems to go into detail about how the four main computers communicate and vote and such like (I haven't actually read it yet, not having the time.) Mark ^.-.^ Purtill at MIT-MULTICS.ARPA **Insert favorite disclaimer here** ((")) 2-032 MIT Cambrige MA 02139