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=-0.8 required=5.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 28637 invoked from network); 13 Dec 2022 23:04:07 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 13 Dec 2022 23:04:07 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 7EC5942448; Wed, 14 Dec 2022 09:04:03 +1000 (AEST) Received: from mail-lf1-f52.google.com (mail-lf1-f52.google.com [209.85.167.52]) by minnie.tuhs.org (Postfix) with ESMTPS id A4F284243D for ; Wed, 14 Dec 2022 09:03:59 +1000 (AEST) Received: by mail-lf1-f52.google.com with SMTP id x28so7532223lfn.6 for ; Tue, 13 Dec 2022 15:03:59 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=cVyjAzWWgmYZ7LWny1tEViNBAeEDikfJnsuvBFOXRKE=; b=HcKuBG5+YJ/Jo7lvx0aI4U7g8Ttek7895RnrJXviqBiJ+jIbcZ8az6weg3DFJwyzxZ DVuPkABMrLnYcEPhsj7SO/Rxns7gxmbaFEjU4g/QuDE2AxgZgSV/ahL/tQaS6PW0Cpoj IgKzJZTE6cj9zhCm6VxW6T5vEbA0yh0MVR42Vmj1p7MMtETB4IUxspkbaWzj/j6f6yyh 1TDPC9atXGqHfGKMwLEGr13RerPrf5oLa5wiu0U8CcdiaJQIny6Mqj67qyCkGjIWoA/O R9t5InLl1mpDDrGH2e65XY9N9eHsaZHvbPKaS4/2zKdxw3Twzrs0p2+DsbUtnfcjd6er o4fQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:from:references:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=cVyjAzWWgmYZ7LWny1tEViNBAeEDikfJnsuvBFOXRKE=; b=d+uARmbG9Fgg22E2Hzst0ckUQCWsTy5HwgnMOPvyAtfpqYOHoR+B1UP7TDIqenMsjZ 9P6eTHMEyHcNJ8ymjkySkrFicUlIY1G2pqMzG/FoqnGOGZmZxUbBBR/gpVuIv0NPYgfn +he5eDd87vOu9pDm7PdTzbka/HKNt+oTenI4SomgkWTzRbWgdHfzy7VC73GFjvtoquT+ 9DhHtkxvAW4aU5jQl/OC+0CM5bd4vmPOWTncI/leEZw3eKHlX8FtTi8J1Xc5oIwlJDBI i1fVQ4oMi2VavmEyZt/QHVf+/8gYMNuNlU6TLXfSkgPM5T9Gq4NrW/L564bXbZ3WeAu7 SOdA== X-Gm-Message-State: ANoB5pkz/Mwk6uPo+frLBCbxSeg+sOCs25GG/vEngMjnnekCAI+6/uOk GWxsuimduwoVwwlvfjJr89NZ7zur6Sw= X-Google-Smtp-Source: AA0mqf6eQGqd2sr2Fa1QPEYnStvB/YgxuQpt5hAT4qFBjuh4EfHK7e/vvpcfkABb+E266MGAYOw1og== X-Received: by 2002:a05:6512:1283:b0:4a4:68b7:d63a with SMTP id u3-20020a056512128300b004a468b7d63amr8214064lfs.33.1670972577631; Tue, 13 Dec 2022 15:02:57 -0800 (PST) Received: from [192.168.1.8] ([178.74.13.104]) by smtp.gmail.com with ESMTPSA id b12-20020a056512024c00b004b5aa1c4d10sm539304lfo.118.2022.12.13.15.02.57 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 Dec 2022 15:02:57 -0800 (PST) Message-ID: <516e29ac-ae8f-e210-a277-82e285aa52c1@gmail.com> Date: Wed, 14 Dec 2022 00:02:56 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.1 Content-Language: nb-NO To: tuhs@tuhs.org References: <202212131431.2BDEVCls018959@freefriends.org> From: Harald Arnesen In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Message-ID-Hash: HAZSLIH4GQMCWLXR2ZP3BHUTJW6HRHKR X-Message-ID-Hash: HAZSLIH4GQMCWLXR2ZP3BHUTJW6HRHKR X-MailFrom: skogtun@gmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-tuhs.tuhs.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: Clever code List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Douglas McIlroy [13/12/2022 16.10]: > A delay line is logically like a drum, with circulating data that is > accessible only at one point on the circle. A delay line was > effectively a linear channel along which a train of data pulses was > sent. Pulses received at the far end were reshaped electronically. and > reinjected at the sending end. One kind of delay line was a mercury > column that carried acoustic pulses. And according to Alan Turing, it might have been implemented with Gin and Tonic.