From owner-sc22wg5@open-std.org Tue Jan 15 09:26:05 2008 Return-Path: X-Original-To: sc22wg5-dom6 Delivered-To: sc22wg5-dom6@open-std.org Received: by open-std.org (Postfix, from userid 521) id A8546DA19D; Tue, 15 Jan 2008 09:26:05 +0000 (UTC) X-Original-To: sc22wg5@open-std.org Delivered-To: sc22wg5@open-std.org X-Greylist: delayed 1309 seconds by postgrey-1.18 at pingo.cv.ihk.dk; Tue, 15 Jan 2008 09:26:04 UTC Received: from ppsw-1.csi.cam.ac.uk (ppsw-1.csi.cam.ac.uk [131.111.8.131]) by open-std.org (Postfix) with ESMTP id ED23323A4A for ; Tue, 15 Jan 2008 09:25:50 +0000 (UTC) X-Cam-SpamDetails: Not scanned X-Cam-AntiVirus: No virus found X-Cam-ScannerInfo: http://www.cam.ac.uk/cs/email/scanner/ Received: from libra.cus.cam.ac.uk ([131.111.8.19]:38275) by ppsw-1.csi.cam.ac.uk (ppsw.cam.ac.uk [131.111.8.131]:25) with esmtp id 1JEhi8-0006Kt-6H (Exim 4.67) (return-path ); Tue, 15 Jan 2008 09:03:56 +0000 Received: from nmm1 (helo=cus.cam.ac.uk) by libra.cus.cam.ac.uk with local-esmtp (Exim 4.68) (envelope-from ) id 1JEhi8-0007l9-RZ; Tue, 15 Jan 2008 09:03:56 +0000 To: sc22wg5 Cc: Van.Snyder@jpl.nasa.gov Subject: Re: [ukfortran] (SC22WG5.3492) Every wonder...? In-Reply-To: Your message of "Mon, 14 Jan 2008 18:20:10 PST." <20080115024333.D5FE5D77F3@open-std.org> Date: Tue, 15 Jan 2008 09:03:56 +0000 From: Nick Maclaren Message-Id: Sender: owner-sc22wg5@open-std.org Precedence: bulk Van.Snyder@jpl.nasa.gov wrote: > > Did you ever wonder where the 80x24 format for glass TTY came from? > > http://upload.wikimedia.org/wikipedia/en/1/18/FortranCodingForm.png Er, no. Sorry. Some of us go back that far. The IBM 80-column card was ubiquitous, and coding forms matched cards, but came in many different depths. The attached 'typewriters' came in many widths, but 80 columns was becoming the de facto standard, and the 'glass teletypes' were simply an extension of those. But the 24 lines was just what happened to be the limit on particular devices; 20, 24, 25, 32 and others were all common. Regards, Nick Maclaren, University of Cambridge Computing Service, New Museums Site, Pembroke Street, Cambridge CB2 3QH, England. Email: nmm1@cam.ac.uk Tel.: +44 1223 334761 Fax: +44 1223 334679