Changeset 195 in t29-www


Ignore:
Timestamp:
Sep 10, 2010, 1:19:00 AM (14 years ago)
Author:
sven
Message:

Siemens educational computer model translated:

  • /en/news.shtm
  • /en/miscellaneous.shtm
Location:
en
Files:
2 edited

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  • en/miscellaneous.shtm

    r184 r195  
    4646    <h3>Movie projector  "Dresden 1"</h3>
    4747
    48      <div class="box left">
     48     <div class="box left clear-after">
    4949        <img src="/shared/photos/kommunikationstechnik/kinomaschine.dresden1.jpg"
    5050           alt="Photography of the movie projector Dresden 1" width="350" height="630" />
    51      </div>
    5251
    53      <p>The technikum29 has a movie projector from 1951 (there are
    54         more and even older projectors from the 1930s that are stored in the
    55         archive for lack of space).</p>
    56      <p>
    57         Movie projectors have always been very complex devices. At that time,
    58         the bright picture projection was archived with an arc light which was
    59         generated between two carbon pencils. The waste heat was deflected via a
    60         chimney pipe! <!-- stupid mode... -->
    61         Since the pencils got shorter and shorter while the movie went on, they
    62         had to be moved continously closer together for producing a constant
    63         luminosity. Otherwise the light goes out.
    64         <br/>We will repair this device to show an original newsreel from the 1960s.
    65     </p>
     52                <div class="bildtext">
     53          <p>The technikum29 has a movie projector from 1951 (there are
     54             more and even older projectors from the 1930s that are stored in the
     55             archive for lack of space).</p>
     56          <p>
     57             Movie projectors have always been very complex devices. At that time,
     58             the bright picture projection was archived with an arc light which was
     59             generated between two carbon pencils. The waste heat was deflected via a
     60             chimney pipe! <!-- stupid mode... -->
     61             Since the pencils got shorter and shorter while the movie went on, they
     62             had to be moved continously closer together for producing a constant
     63             luminosity. Otherwise the light goes out.
     64             <br/>We will repair this device to show an original newsreel from the 1960s.
     65         </p>
     66           </div>
     67        </div>
     68               
     69        <h3 id="demo">Siemens Demonstration Computer</h3>
     70        <div class="box center">
     71        <img src="/shared/photos/rechnertechnik/siemens-democomputer.jpg" alt="Siemens demonstration educational computer CPU" width="700" height="587" />
     72                <p class="center"><b>Siemens educational computer</b></p>
     73        </div>
    6674
     75        <p>This demonstration model was build in 1973, when personal computers were not
     76           invented for a long time yet. Engineers had to be trained to understand
     77           computer architectures. Therefore, this big education model was constructed.
     78           It is a giant implementation of a typical register machine where 126 lamps
     79           display all registers, control, ALU and RAM, including the data flow.
     80           Featuring a mutable clock pulse and only 4 bit word with, elementary opcodes
     81           could be reproduced in a very illustrative way. The device can be toggled to
     82           process one instruction or one cycle a time.
     83        <br>On the left side, the computer program could be directly "written" by plugging
     84           cartidges labeled with assembly instruction mnemonics or numerical values
     85           (immediate operands). On this cartiges the user could directly read the binary
     86           value of the machine instruction which will be the content of the corresponding
     87           random access field. As you might guess, the computer cannot change the program
     88           memory without user interaction, so this model actually implements an Harvard
     89           architecture, even though the (german) labels on the frontend suggest something
     90           different.
     91        <br>The picture above shows a currently running program that adds memory cells. It
     92           shows that computer word lengths do not limit the length of proccessable
     93           numbers.
     94        <br>It is a wonderful device that can even be used today to understand the elementary
     95           workflow of modern high end desktop CPUs.
     96    </p>       
     97       
    6798</div><!-- end of content -->
    6899<!--#include virtual="/en/inc/menu.inc.shtm" -->
  • en/news.shtm

    r184 r195  
    1717    <link href="http://page2rss.com/rss/15c37d8c11d3729e650502a0881277e4" title="Get a nifty RSS feed from this list" type="application/rss+xml" rel="alternate" />
    1818    <meta name="t29.SVN" content="$Id$" />
    19     <meta name="t29.comment" content="13.07.09: Neu" />
    2019</head>
    2120<body>
     
    2827
    2928
    30 <ul class="news-feed">
    31         <li><h3>June 2010</h3>
    32                 We are writing an ongoing <a href="/en/computer/univac9200.shtm#blog">Blog about the UNIVAC 9300 reparation</a>.
    33         </li>
     29    <ul class="news-feed">
     30           <li><h3>September 2010</h3>
     31       
     32       <div class="box left clear-after">
     33               <a href="/en/miscellaneous.shtm#demo"><img src="/shared/photos/rechnertechnik/siemens-demo.jpg" width="350" height="293" alt="Siemens educational Computer demonstration CPU model"/></a>
     34               <p class="bildtext">
     35                      We got a big <a href="/en/miscellaneous.shtm#demo" class="go">educational computer model</a> made by Siemens from 1973.</p>
     36           </p>
     37      </div></li>
     38       
     39       <li><h3>June 2010</h3>
     40                   We are writing an ongoing <a href="/en/computer/univac9200.shtm#blog">Blog about the UNIVAC 9300 reparation</a>.
     41           </li>
    3442
    3543
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