From: dds@aueb.gr (Diomidis Spinellis)
Subject: [TUHS] Teletype simulator?
Date: Fri, 25 Mar 2016 23:27:24 +0200 [thread overview]
Message-ID: <56F5AD3C.4060802@aueb.gr> (raw)
In-Reply-To: <8AF184E8-FA2F-4CA9-A094-C0EAFF1C35A6@serissa.com>
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On 24/03/2016 16:28, Lawrence Stewart wrote:
> And the keyboard locks! You cannot press a key unless the machine has finished transmitting the
> previous key. “two key rollover” was a great advance in its day.
In the late 1970s or early 1980s I worked over a summer in a repair shop
for equipment manufactured by the German company Kienzle Apparate GmbH.
Their keyboards were a marvel of electromechanical engineering. When a
key was pressed the remaining keys were *physically locked*, preventing
a second key from getting pressed. This was supposed to provide the
operators with tactile feedback when they accidentally pressed more than
one key. Maybe gratuitous over-engineering, such as this, contributed to
the company's decline and the eventual takeover by Manessmann (1981) and
then DEC (1991).
next prev parent reply other threads:[~2016-03-25 21:27 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-24 13:19 Noel Chiappa
2016-03-24 14:23 ` Random832
2016-03-24 16:41 ` Jacob Goense
2016-03-24 14:28 ` Lawrence Stewart
2016-03-25 21:27 ` Diomidis Spinellis [this message]
2016-03-25 21:56 ` Steffen Nurpmeso
2016-03-28 12:04 ` Steffen Nurpmeso
2016-03-24 14:40 ` George Ross
2016-03-24 15:29 ` Random832
2016-03-24 15:32 ` John Cowan
2016-03-24 16:15 ` Mary Ann Horton
2016-03-24 20:29 ` scj
2016-03-25 12:54 ` Dave Horsfall
2016-03-26 21:04 ` Ronald Natalie
2016-03-24 19:56 ` scj
-- strict thread matches above, loose matches on Subject: below --
2016-03-24 20:12 Norman Wilson
2016-03-24 20:24 ` Lyndon Nerenberg
2016-03-24 20:36 ` scj
2016-03-24 13:36 Doug McIlroy
2016-03-23 19:28 [TUHS] PDP-7 Unix: The B compiler works Warren Toomey
2016-03-24 9:01 ` [TUHS] Teletype simulator? Warren Toomey
2016-03-24 10:21 ` Pierre DAVID
2016-03-24 11:00 ` Clem cole
2016-03-24 11:01 ` Clem cole
2016-03-24 21:39 ` Clem Cole
2016-03-25 3:18 ` Mary Ann Horton
2016-03-25 3:57 ` Charles Anthony
2016-03-25 20:13 ` Mary Ann Horton
2016-03-24 16:37 ` Jacob Goense
2016-03-25 2:18 ` Dave Horsfall
2016-03-25 3:43 ` Greg 'groggy' Lehey
2016-03-25 5:59 ` Jacob Goense
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