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Article #621033Re: Why so many 6s and 8s in the 70s?
From: Quadibloc
Date: Tue, 27 Feb 2018 21:25
Date: Tue, 27 Feb 2018 21:25
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On Tuesday, February 27, 2018 at 1:28:52 PM UTC-7, Andreas Kohlbach wrote: > When you look at microprocessors up to the very late 70s you might notice > many of them have a 6 and/or 8 in their names. Like the 6502, 8080, 8086, > Z80, M680X, M680XY... > Is this a coincidence or a pattern behind that? Well, the MOS Technology 6502 was intended to be "similar" to the Motorola 6800, and thus a cheaper alternative to it. The number 8 is considered a lucky number among the Chinese - but those processors acted on 8-bit bytes. And the Z80 was intended to be a replacement for the 8080, offering a bunch of new additional functions. Also, back in earlier times, IBM made a number of series of computers... 7010: an expanded version of their popular 1401 7030: the later copies of the original STRETCH sent to Los Alamos 7040, 7044: a budget 36-bit scientific with some additional character instructions 7070: a computer with decimal arithmetic but a fixed word length, intended to be useful in both commercial and scientific applications 7090, 7094: their 36-bit scientific and so that may have influenced people away from the famous Western lucky number. John Savard
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X-Received: by 10.55.167.201 with SMTP id q192mr11721205qke.0.1519766721189; Tue, 27 Feb 2018 13:25:21 -0800 (PST) X-BeenThere: alt.folklore.computers@googlegroups.com Received: by 10.237.59.151 with SMTP id r23ls1400249qte.6.gmail; Tue, 27 Feb 2018 13:25:19 -0800 (PST) X-Received: by 10.200.51.85 with SMTP id u21mr11966856qta.12.1519766719304; Tue, 27 Feb 2018 13:25:19 -0800 (PST) X-Received: by 10.31.2.74 with SMTP id 71mr1629345vkc.6.1519766719098; Tue, 27 Feb 2018 13:25:19 -0800 (PST) Path: mbox-mo1.pugleaf.net!o9ni125qte.1!nntp.google.com!t24no562216qtn.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: alt.folklore.computers Date: Tue, 27 Feb 2018 13:25:18 -0800 (PST) In-Reply-To: <87sh9m9ny5.fsf@usenet.ankman.de> Complaints-To: groups...@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=24.114.27.163; posting-account=1nOeKQkAAABD2jxp4Pzmx9Hx5g9miO8y NNTP-Posting-Host: 24.114.27.163 References: <87sh9m9ny5.fsf@usenet.ankman.de> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: <c63e7d1c-a4ac-45e3-8ec6-8be10e221dc6@googlegroups.com> Subject: Re: Why so many 6s and 8s in the 70s? From: Quadibloc <jsa...@ecn.ab.ca> Injection-Date: Tue, 27 Feb 2018 21:25:19 +0000 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit