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=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 7405 invoked from network); 11 Feb 2021 18:44:17 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 11 Feb 2021 18:44:17 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id D6C329C88C; Fri, 12 Feb 2021 04:44:13 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id 0CA7C9C6CF; Fri, 12 Feb 2021 04:43:54 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=cfcl.com header.i=@cfcl.com header.b="FeBIExPy"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id C73B89C6CF; Fri, 12 Feb 2021 04:43:52 +1000 (AEST) Received: from mail-pl1-f176.google.com (mail-pl1-f176.google.com [209.85.214.176]) by minnie.tuhs.org (Postfix) with ESMTPS id EBAE49C2E5 for ; Fri, 12 Feb 2021 04:43:51 +1000 (AEST) Received: by mail-pl1-f176.google.com with SMTP id e9so3794771plh.3 for ; Thu, 11 Feb 2021 10:43:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cfcl.com; s=google; h=mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; bh=mjoiKrsy+r6BD2URXBT9JB5UDDikxtvzkkwRM0GpoXU=; b=FeBIExPyHArx6x0n8lfSsqLGCv2qkKjio/XS9dF4aWd9BNV9GAfgXZh3wonew+vnb2 eLsGgPrY8duvpQ22LwD8B2yDvJuVFcieFsD+llI5iMDpyUyP57bxSBEwKMZuz4RUXWEZ VQcDO+UbsBzsy/P7DwIgqgI1yZi16l2Qe3mqpHDLkh+IPNw7cJdLBBVfdPFr3chyxP9+ hb1yDfyXExaxp7fsSqVTfGHHewRruN1OavrKWEPPLZrhg3MW4D67mTztH3N1SaWq5Gq7 bxJGf9NxCj7pAdeJ1CWxgJuKif0wvvqk4WGFq8IVbg7GUby7V0QG+rAkFk5IDdIsCKqF L7QA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date :content-transfer-encoding:message-id:references:to; bh=mjoiKrsy+r6BD2URXBT9JB5UDDikxtvzkkwRM0GpoXU=; b=D7KS7bhMQ9SHbM7jgPtgl4zpJ+WxDC/XJO9g0sR0bhqV8PqY6sVUnAt9gGv6fgXQFj lo13aDWBKUaK/LUJu3vSPPP929OOxvp51pHLWSdNYSSY6SBM7QCHOBDBvATTCoiVTdjz iXIjih61691Ef5PjdykcETiQW2rRg8ZvDaAdlwhYQUl0vTsCdre1GS/uVVZDrLsjf3iQ rB4/k6hfCMLVHc5k9HNrKIHBLmh0N6Zvp/E2bgVIMIPArVNQMLB/ZX9x1b8V/35N/ceL 2HUjBkgZoYAcDMeY7LxIc2N2aWxc+ky9GhFE5cxFZWz6b1wZ9vg/7RZzcj4L30CbtPSB RfPg== X-Gm-Message-State: AOAM532xlCAVh+Ufjn42/7eT0ljZRUK5rhIHkR6XMErx1yQbiNWm1Y1+ KbyglgPJe+1L1vcBpgNjVMj+lT9NBpcqNw== X-Google-Smtp-Source: ABdhPJw39zkDFpHzgmN6Jtuyli0i9EM2ovAf/TjyeW3eaizl4bCMuDmnpdmfG/dd+xrIP6+4u2RoIQ== X-Received: by 2002:a17:90a:ca8f:: with SMTP id y15mr5044356pjt.119.1613069030886; Thu, 11 Feb 2021 10:43:50 -0800 (PST) Received: from spot.hitronhub.home (24-113-88-45.wavecable.com. [24.113.88.45]) by smtp.gmail.com with ESMTPSA id e21sm6250164pgv.74.2021.02.11.10.43.50 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 11 Feb 2021 10:43:50 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.4\)) From: Rich Morin In-Reply-To: Date: Thu, 11 Feb 2021 10:43:49 -0800 Content-Transfer-Encoding: quoted-printable Message-Id: <55104AA3-B497-4852-8D5F-29513C000C71@cfcl.com> References: <8b580c46-ecfb-9383-ed43-08108b3ee7bf@tllds.com> <20201130163753.GB18187@mcvoy.com> <202102102236.11AMann01820861@darkstar.fourwinds.com> <4be538bd-a4ee-4287-4d61-9cc6e18c061b@mhorton.net> <20210211025253.GX13701@mcvoy.com> <8412062A-2360-4464-B834-2567AEA69C0D@humeweb.com> <31617.1613048783@hop.toad.com> <34f3d83f-c33e-83de-cb59-12209a7ff729@gmail.com> To: TUHS main list X-Mailer: Apple Mail (2.3608.120.23.2.4) Subject: Re: [TUHS] troff was not so widely usable 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: , Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" I've heard stories about a very high speed dot matrix printer used = (IIRC) at Lawrence Berkeley Laboratory. Apparently, it used a bank of = Hydrogen Thyratrons to multiplex high voltage onto a set of metal = needles. The resulting sparks burned tiny black holes into the paper at = 24K LPM. It occurs to me that it could probably have been used for graphics, = typesetting, and such, but I dunno. Might anyone here be able to talk = about (or provide links about) this beast? -r