- Timestamp:
- Jul 4, 2014, 9:00:31 PM (9 years ago)
- Location:
- en
- Files:
-
- 2 edited
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en/communication/fax.php
r299 r594 258 258 Of course this apperature is still fully executable. 259 259 </p> 260 260 261 <div class="box left"> 262 <img src="/shared/photos/kommunikationstechnik/telegrafenalphabet.jpg" width="414" height="391" alt="Fernschreiber" /> 263 <p class="bildtext"> 264 <div class="bildtext"> 265 <p><b id="decoder">Decoder: 5-Bit to telex </b> <a class="popup" href="/shared/photos/kommunikationstechnik/telegrafenalphabet.jpg"><br> 266 Enlarge picture</a> 267 268 <p>Recently we saved this large (70cm by 60cm) and wonderful "decoder" from scrap 269 at a local university. This device translates 5 bit telegraph codes to their 270 corresponding characters. It has been built as a demonstration object by the 271 university's machine shop sometime between 1937 and 1949 and has been used 272 extensively in lectures.<br> 273 Principle of operation: A 5 bit value is set by means of the large levers. Then 274 the code wheel is turned slowly until the correct character is in the top 275 position which is denoted by lighting a lamp. If, e.g., 10101 is set and the 276 code wheel is turned, the lamp will be lit under the character "Y".<br> 277 What once was state-of-the-art technology is now used as a decoding device for 278 our experimental workshops. There kids can decipher texts given in binary and 279 thus gain experience with binary data representation.</p> 280 <div class="clear"></div> 261 281 262 282 <h2>Flexowriter</h2> -
en/news.php
r564 r594 44 44 45 45 <ul class="news-feed"> 46 47 <li><h3>July 2014</h3> 48 <div class="box left clear-after"> 49 50 <img src="/shared/photos/kommunikationstechnik/telegrafenalphabet.jpg" width="153" height="144" /> 51 52 <a href="/en/communication/fax.php#decoder"> A historic 5-bit character decoder</a> from the university. Here it is used as a decryption engine in our experimental workshop.</div> 53 54 55 56 46 57 <li><h3>June 2014</h3> 58 47 59 <div class="box left clear-after"> 48 60 <img src="/shared/photos/rechnertechnik/tuebingen.jpg" width="153" height="149" /> … … 53 65 embedded into the event <em>Some notes on modern digital lifestyle</em>. 54 66 </div> 67 55 68 56 69 <li><h3>May 2014</h3> … … 88 101 89 102 Success! The BULL GAMMA 55 is up and running! An historical moment, <a href="/en/computer/gamma55.php#ge-55"><b>Look here</a></b><br><br><br><br> 90 91 92 <li><h3>May 2013</h3><br>93 <div "box left clear-after">94 <img src="/shared/photos/rechnertechnik/ross-moll.jpg" width="300" height="196" class="nomargin-bottom" />95 We support artists, look here96 <a href="/en/miscellaneous.php#music"> <b>Punch-Card-Music</b> </a>97 </div>98 <br>99 103 100 104 </li>
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