source: t29-www/en/devices/diehl-combitronic.shtm @ 151

Last change on this file since 151 was 151, checked in by sven, 14 years ago

Verschiedenste Korrekturen an englischen Extraseiten (mittige Überschriften, etc.), ein paar Tippfehler auf deutschen Seiten (bei Links zu englischen Seiten)

-- sven @ workstation7

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2     "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
3<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
4<head><!--#set var="title"        value="Details of the Diehl Combitronic and Algotronic"
5   --><!--#set var="location"     value="diehl"
6   --><!--#set var="part"         value="extra"
7   --><!--#set var="url_de"       value="geraete/diehl-combitronic.shtm"
8   --><!--#set var="title_de"     value="Details der Diehl Combitronic und Diehl Algotronic"
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10   --><!--#set var="prev_title"   value="Programmable third-generation calculators with early IC-technology"
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13   --><title>technikum29 - <!--#echo var="title" --></title>
14
15    <!--#include virtual="/de/inc/head.inc.shtm" -->
16    <meta name="DC.Title" content="technikum29 - <!--#echo var="title" -->" />
17    <meta name="t29.SVN" content="$Id$" />
18    <meta name="DC.Subject" content="Fotos der Combitron" />
19    <meta name="t29.germanoriginal" content="29.12.2008" />
20    <meta name="t29.thistranslation" content="29.12.2008/16:18" />
21    <meta name="t29.comment" content="+ Algotronic translation" />
22</head>
23<body>
24<!--#echo encoding="none" var="heading" -->
25<div id="content">
26    <h2><!--#echo var="title" --></h2>
27
28<div class="box center">
29      <div style="white-space:nowrap">
30        <img src="/shared/photos/rechnertechnik/combitronic-lochstreifen.jpg" width="330" height="247" alt="Paper Tape used for booting" />
31        <img src="/shared/photos/rechnertechnik/combitronic-logik.jpg" width="322" height="247" alt="Combitronic logic boards" style="margin-left:14px" />
32      </div>
33      <p>These two pictures show some details from the Combitronic. In the picture on the left
34         hand you see the metallic paper tape that is used for booting the device. It is driven
35         by the engine from the printer. The picture on the right hand shows germanium transistors
36         on the upper board and ceramic ROM ICs on the lower board.</p>
37
38     <!-- paragraph new: 29.12.2008 16:38 -->
39     <p>It is quite interesting to see DIEHL improving quite slowly but
40        continuing their hardware: The successor model <b>DIEHL Algotronic</b>
41        (1973/74) featured 2x 21 shift registers with each 512 bits storage
42        capacity instead of the delay line. Thus the device had
43        about 20 kbit storage capacity, so the metallic boot tape could be
44        extended: The new boot tape had 3 tracks (including one timing track).
45        While the first track was read in while moving the tape forward, the
46        second one was read in while rewinding the tape. This "boot device"
47        contained micro programs for scientifical functions (sin, cos, tan,
48        ln, exp, etc.). If the computer was intended for e.g. statistical
49        functions, it needed another boot tape.
50        <br/>These Diehl computers look like the Combitronic, but they are
51        equipped with a few more keys. All in all the hardware architecture
52        from this desk computer was obsolete, even for that time. It was
53        partily still made using germanium transistors. After these computers,
54        Diehl built the completely new computer "Alphatronic, DS 300, DS 400"
55        that is no more interesting for our museum.</p>
56</div>
57
58</div><!--content -->
59<!--#include virtual="/en/inc/menu.inc.shtm" -->
60</body>
61</html>
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