From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 32162 invoked from network); 29 Mar 2021 21:14:43 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 29 Mar 2021 21:14:43 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 45C5E9C8BC; Tue, 30 Mar 2021 07:14:39 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 0BC679C82B; Tue, 30 Mar 2021 07:14:22 +1000 (AEST) Received: by minnie.tuhs.org (Postfix, from userid 112) id 9F7969C829; Tue, 30 Mar 2021 07:14:19 +1000 (AEST) Received: from mcvoy.com (mcvoy.com [192.169.23.250]) by minnie.tuhs.org (Postfix) with ESMTPS id 171409C829 for ; Tue, 30 Mar 2021 07:14:19 +1000 (AEST) Received: by mcvoy.com (Postfix, from userid 3546) id 3C3BD35E361; Mon, 29 Mar 2021 14:14:18 -0700 (PDT) Date: Mon, 29 Mar 2021 14:14:18 -0700 From: Larry McVoy To: "Erik E. Fair" Message-ID: <20210329211418.GK4209@mcvoy.com> References: <4B1F03CA-6387-4FE1-8116-0CB7B5175DE7@ucsc.edu> <20718.1617052215@cesium.clock.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20718.1617052215@cesium.clock.org> User-Agent: Mutt/1.5.24 (2015-08-30) Subject: Re: [TUHS] Remember the ed thread? X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: TUHS main list Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" Whatever we had, it was slow. Printed one char at a time. So you got good and memorizing the code and only asking to see it rarely. Be funny trying to explain this to my kids. I think they'd get it at some level but really have no idea how much we worked to not let the printer do anything. On Mon, Mar 29, 2021 at 02:10:15PM -0700, Erik E. Fair wrote: > Technically, the DEC DECwriter series were dot-matrix printers, not line printers. They differed from their Teletype predecessors only in print-head technology, but both printed a single character at a time. Daisywheel printers were similar. > > Line printers are distinguished not by the width of the paper but by the printer having enough print heads to print an entire line of output at a time. That speed advantage made them the preferred output device for many-page program listings, as opposed to a teleprinter terminals which were more suitable for interactive computing. > > There were dot-matrix line printers of the late 1970s made by Printronix, which is apparently still around. > > Erik Fair -- --- Larry McVoy lm at mcvoy.com http://www.mcvoy.com/lm