Changeset 253 in t29-www for en


Ignore:
Timestamp:
May 22, 2012, 2:13:00 AM (11 years ago)
Author:
heribert
Message:

Heriberts Aenderungen der letzten X Monate.

Location:
en
Files:
4 edited

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  • en/computer/punchcard.shtm

    r243 r253  
    6666        </p>
    6767       
    68         <div class="box center auto-bildbreite">
     68        <div class="box center auto-bildbreite" id="u1710">
    6969        <a name="univac1710"><img src="/shared/photos/rechnertechnik/univac1710.jpg" alt="UNIVAC 1710 Verifying Interpreting Punch" width="580" height="435" /></a>
    7070        <p class="bildtext"><b>UNIVAC 1710 Verifying Interpreting Punch</b> (VIP)</p>

  • en/computer/univac9200.shtm

    r247 r253  
    6363                <p class="bildtext"><b>UNIVAC 9300</b> electronic data processing system, uncovered while being restored</p>
    6464        </div>
     65               
     66               
     67        <b id="cards">UNIVAC 9200 Software</b><br>
     68<p>Often it is sheer luck that helps saving unique artifacts from scrap. In this
     69case a curious student at the Goethe University discovered strange objects in a
     70building and informed us. It turned out that these devices were a <a href="/en/computer/punchcard.shtm#u1710">UNIVAC 1710</a>
     71
     72card puncher and a cabinet full of punched cards containings programs for our
     73UNIVAC 9200. The punch cards, about 65000 pieces, contain programs which were
     74developed between 1967 and 1975 at the institute of mathematics and applied
     75computer science. We will surely revive some of these old programs on our
     76UNIVAC system. <br>
     77 The rescue action was actively supported by the University of Frankfurt and
     78the "FITG" (Frankfurt) whon we would like to thank for their efforts.</p>
     79        <div class="box center auto-bildbreite">
     80<img src="/shared/photos/rechnertechnik/univac/lochkarten.jpg" alt="65.000 punch cards" width="700" height="174" />
     81                <p class="bildtext">24 boxes containing more than 65000 punch cards extend our software library</div>
     82               
     83<p>NB: One punch card can hold up to 80 characters - that makes about 80 bytes
     84per card. Thus 65000 cards correspond to about 5 MB which is roughly the same
     85amount of data that a modern digital camera produces for a single picture.
     86Stored on punch cards 5 MB weigh about 160 kg while the cabinet housing the
     87cards has a volume of about 0.5 m³ (about 500 liters of volume).</p>
     88
    6589
    6690

  • en/miscellaneous.shtm

    r195 r253  
    4343         alt="Picture of the Pianola" width="700" height="618" class="nomargin-bottom" />
    4444     </div>
    45 
     45<h3 id="Q1"> technikum29 supports school projects:</h3>
     46
     47<p>Microcontrollers revolutionize
     48and influence next to everything. How can schools participate on these
     49developments and perform successful and interesting projects?<br>
     50Six pupils of Q1 (12th year in school) of the Albert-Einstein secondary
     51school were looking for a suitable idea for their so called "project
     52week". This project should be connected to mathematics, physics and/or
     53computer science. This is where the technikum29 got involved. The idea
     54the pupils came up with was to connect technology from the 1950s with
     55modern equipment of 2012. Communication spanning time and technology.<br>
     56<div class="box left">
     57        <img src="/shared/photos/kommunikationstechnik/arduino1.jpg" width="606" height="335" />
     58       </div>
     59<p>Traditionally such projects required knowledge only accessible to
     60computer scientists, engineers and the like. Often they had to spend
     61weeks of reading data sheets, writing cryptic assembly code etc. How
     62things have changed! Since 2009 a cheap and versatile module named
     63"Arduino" is available - a controller based on the well known ATmega
     64328 chip featuring 32 kB of memory. Arduino boards are designed not
     65for the expert but for the layman and are the perfect base for
     66creative people, artists, designers etc.
     67 <br>
     68This project focuses on connecting computers to the "real world". The
     69small Arduino board can be programmed to be used as an interface for
     70nearly everything. The pupils decided to connect an early fax machine
     71(a Siemens KF108 made in 1958) to a modern PC.   <br>
     72This fax machine is based on a rotating drum which holds the sheet of
     73paper to be transmitted to the receiving station. The picture is
     74scanned in a spiral movement by a photodetector that slowly moves in
     75parallel to the axis of the drum. Of course, this is incompatible with
     76more recent fax machines.
     77
     78The Arduino was planned to act as the interface between this historic
     79device and a modern PC. Thus the pupils first had to learn how to
     80program such a micro controller which turned out to be quite difficult
     81for non-programmers. Nevertheless the software approach has its
     82advantages: It is more easily debugged compared with a traditional
     83hardware based interface. Thus it only took a single week to program
     84and interface the Arduino board to the Siemens fax.
     85
     86<div class="box left">
     87        <img src="/shared/photos/kommunikationstechnik/arduino2.jpg" width="606" height="354" />
     88       </div>
     89           
     90<p>The fax machine generates an auido signal with a frequency of 1.5 kHz
     91denoting black pixels to be transmitted. To convert this into a binary
     92signal with a 5V level an amplifier circuit is needed that is followed
     93by an RC-combination. In addition to that a synchronization signal is
     94necessary to signal the start of a new line being scanned. This is
     95generated utilizing a reed-contact that is triggered by a so called
     96"super magnet" that has been glued onto the axis of the scanner drum.
     97The reed-contact thus generates a signal for every revolution of the
     98drum which corresponds to a single line being scanned.<br>
     99
     100The control program for the Arduino was developed by the pupils (the
     101source code can be found <a href="/de/lernprojekte/arduino-projekt-programme/"> >>HERE</a>). It allows the picture being scanned, a historic Mickey-Mouse drawing, to be transferred to the PC
     102where it is displayed slowly line by line with good resolution.
     103
     104The experiment was a full success and will inspire future projects.
     105
     106<p class="small">*) Arduino: The name of this board derives from King "Arduino of
     107Ivrea" who lived in medieval times in northern Italy where the
     108controller was developed.</small> <br>
     109
     110         
     111        <h3 id="leander">Art in the Museum</h3>
     112
     113<p>The technikum29 motivates activities that get awards and prices. The latest
     114example is that of the young artist Leander A. Schwarzer who transforms
     115everyday things into pieces of art. He has developed pictures made from zippers
     116that can be opened thus giving the viewer the opportunity to modify the picture
     117itself.<br>
     118 His latest visit to the technikum29 has inspired him to make art from
     119and with punch cards which were the basis of industrialization in the 20th
     120century. First the "Terzett" (Trio) was created which consists of three punched
     121cards with these irreversible sentences:</p>
     122
     123<div class="box left">
     124        <img src="/shared/photos/start/lk.jpg"  width="250" height="350" class="nomargin-bottom" />
     125                <p class="Bildtext small">Picture 1: 3 punch cards with text</p></div>
     126               
     127        ANOTHER WORLD IS POSSIBLE<br>
     128        IMPOSSIBLE IS NOTHING<br>
     129        IMAGINE ALL THE PEOPLE<br>
     130        <div class="box right">
     131        <img src="/shared/photos/start/leander.jpg" alt="Leander Schwarzer" width="313" height="239" class="nomargin-bottom" />
     132                <p class="Bildtext small">Picture 2: Leander A. Schwarzer punching cards on an IBM key punch</p>
     133               
     134                </div>
     135
     136<p>These cards were hanged on a wall at a distance of 1-2 cm. During the day sun
     137rays create shadows of the punched and coded text on the wall behind the cards.
     138This work of art was awarded a price at the 32th grafics competition in Austria
     139(Innsbruck, 2011). This in turn motivated Mr. Schwarzer to continue his work
     140with punched cards. He spent several days at the technikum29 punching excerpts
     141from Marx' "Capital" thereby creating a pile of several hundred cards. These
     142were shown in the exhibition "A Symbol of Freedom" in Piacenza (Italy). Punched
     143cards transform contemporary slogans into visual paradoxes when they create
     144their unique shadows.</p>
     145<div class="box left">
     146        <img src="/shared/photos/start/lk-musik.jpg" alt="Musik aus Lochkarten" width="336" height="188" class="nomargin-bottom" />
     147                <p class="Bildtext small">Picture 3: Punched cards running through a "musical clock"</p>
     148                </div>
     149
     150<p>Another work, "Fetish Character of commodities", concatenates the cards
     151containing Marx' text fragments. This string of cards is then pulled through a
     152mechanism like a musical clock that generates sounds controlled by the holes in
     153the cards. So, finally, the "Capital" is transformed into atmospheric sounds.</p><br>
     154
     155         
     156         
     157         
    46158    <h3>Movie projector  "Dresden 1"</h3>
    47159

  • en/news.shtm

    r246 r253  
    2828
    2929    <ul class="news-feed">
    30         <li><h3>August 2011</h3>
     30       
     31        <li><h3>April 2012</h3>
     32        <div class="box left">
     33<img src="/shared/photos/rechnertechnik/univac/lochkarten.jpg" width="350" height="87"/>
     34</div>
     35        Unbelievable software-discovery for our UNIVAC 9200 <a href="/en/computer/univac9200.shtm#cards"><b>Read more here:</b></a>
     36<div class="clear"></div></li>
     37       
     38        <li><h3>March 2012</h3><div class="box left">
     39       
     40        <img src="/shared/photos/start/leander.jpg" alt="Leander Schwarzer" width="303" height="231" </div>
     41        Artists are working in technikum29. Leander Schwarzer punching cards.
     42        <a href="/en/miscellaneous.shtm#leander"><b>View article</b></a>
     43        <div class="clear"></div></li>
     44       
     45
     46
     47<li><h3>Februar 2012</h3>
    3148<div class="box left">
    32 <img src="/shared/photos/rechnertechnik/lgp21-0.jpg" width="300" height="151"/>
     49<img src="/shared/photos/kommunikationstechnik/arduino1.jpg" width="303" height="172"/>
    3350</div>
    3451
    35 
    36 We got a very rare computer from the early 1960s: <a href="/en/computer/early-computers.shtm#lpg21-en"><b> The Schoppe & Faeser LPG 21,</b></a> made in Germany.<div class="clear"></div>  </li>
    37 
    38 <li><h3>July 2011:</h3>
    39 <div class="box left">
    40 <img src="/shared/photos/rechnertechnik/nova-klein.jpg" width="250" height="356"/>
    41 </div>
    42 We moved a new complete <a href="/en/computer/early-computers.shtm#nova-en"><b>Nova 2 system</b></a>  (color: blue gentian). This scientific computer was built concurrently to the DEC computers in 1969.
    43 One of the first computers which Word length is a multiple of a byte (octett).
     52technikum29 supports school projects:
     53<a href="/en/miscellaneous.shtm#Q1"><b>Look here</b></a>
    4454<div class="clear"></div></li>
     55</li>
    4556
    4657
    4758
    48         <li><h3>June 2011</h3>
    49 <div class="box left">
    50 <img src="/shared/photos/kommunikationstechnik/tek555kl.jpg" width="250" height="300"/>
    51 </div>
    52 New in the "Experiment and Measurement" is a short description of the legendary Tektronix oscilloscopes, especially the <a href="/en/communication/measurement.shtm#t555"><b>Type 555.</b></a>
    53 <div class="clear"></div></li>
    54 
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    57      
    58          
    5959
    6060    </ul>
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