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Article #625083Re: DEC introduces PDP-6 [was Re: IBM introduces System/360]
From: Anne Lynn Wheeler
Date: Sat, 21 Jul 2018 15:29
Date: Sat, 21 Jul 2018 15:29
33 lines
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2969 bytes
David Wade <g4ugm@dave.invalid> writes: > I believe that the model 30 sold in the thousands, a number which I > find staggering..... from https://people.cs.clemson.edu/~mark/acs_end.html As the quote above indicates, the ACS-1 design was very much an out-of-the-ordinary design for IBM in the latter part of the 1960s. In his book, Data Processing Technology and Economics, Montgomery Phister, Jr., reports that as of 1968: Of the 26,000 IBM computer systems in use, 16,000 were S/360 models (that is, over 60%). [Fig. 1.311.2] Of the general-purpose systems having the largest fraction of total installed value, the IBM S/360 Model 30 was ranked first with 12% (rising to 17% in 1969). The S/360 Model 40 was ranked second with 11% (rising to almost 15% in 1970). [Figs. 2.10.4 and 2.10.5] Of the number of operations per second in use, the IBM S/360 Model 65 ranked first with 23%. The Univac 1108 ranked second with slightly over 14%, and the CDC 6600 ranked third with 10%. [Figs. 2.10.6 and 2.10.7] ... snip ... previous post in thread: http://www.garlic.com/~lynn/2018e.html#45 DEC introduces PDP-6 [was Re: IBM introduces System/360] -- virtualization experience starting Jan1968, online at home since Mar1970
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X-Received: by 2002:a02:95b:: with SMTP id f88-v6mr3062024jad.28.1532186991525; Sat, 21 Jul 2018 08:29:51 -0700 (PDT) X-BeenThere: alt.folklore.computers@googlegroups.com Received: by 2002:a02:2b1f:: with SMTP id h31-v6ls770429jaa.10.gmail; Sat, 21 Jul 2018 08:29:50 -0700 (PDT) X-Received: by 2002:a02:14e:: with SMTP id c75-v6mr3055971jad.47.1532186990803; Sat, 21 Jul 2018 08:29:50 -0700 (PDT) Path: mbox-mo1.pugleaf.net!k71-v6ni4487itk.0!nntp.google.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!goblin2!goblin.stu.neva.ru!aioe.org!eternal-september.org!feeder.eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail From: Anne & Lynn Wheeler <ly...@garlic.com> Newsgroups: alt.folklore.computers Subject: Re: DEC introduces PDP-6 [was Re: IBM introduces System/360] Date: Sat, 21 Jul 2018 08:29:47 -0700 Organization: Wheeler&Wheeler Lines: 33 Message-ID: <87wotoppxw.fsf@localhost> References: <c4cc7a5b-0022-4d5c-a945-25de245c2d24@googlegroups.com> <mdda7qmrkgz.fsf@panix5.panix.com> <pir133$nk7$1@gal.iecc.com> <4fc4e56d-613f-45d6-b531-0e35bd188f68@googlegroups.com> <mddwotpzlbk.fsf@panix5.panix.com> <7a244a74-e9e4-4cd7-821c-7141a7329078@googlegroups.com> <piutba$fh7$1@dont-email.me> Mime-Version: 1.0 Injection-Info: reader02.eternal-september.org; posting-host="94d02c458e4ca51afe22a706a845c93d"; logging-data="20302"; mail-complaints-to="ab...@eternal-september.org"; posting-account="U2FsdGVkX19B4Cb/JgUSEvMaCE+Mmu/L1F1rgeos5eA=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) Cancel-Lock: sha1:AAnW/Y52X48WwJxqNs6qIUCek8o= sha1:4A7sbdq6ohiA/cjtYmPaDbzI6ho= Bytes: 2516 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit