- Timestamp:
- Mar 28, 2010, 12:47:58 AM (14 years ago)
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en/devices/univac9400/discdrives.shtm
r152 r156 25 25 <h2><!--#echo var="title" --></h2> 26 26 27 <div class="box center ">27 <div class="box center auto-bildbreite"> 28 28 <img src="/shared/photos/rechnertechnik/univac/plattenlaufwerke.jpg" alt="Die Plattenlaufwerke" width="595" height="446" /> 29 <div class="bildtext -bildbreite" style="width: 595px;">29 <div class="bildtext"> 30 30 <p> 31 31 Disc drives have a much smaller access time compared to … … 33 33 and the 10 heads is very complex, so they needed a whole 34 34 cabinet with electronics (in the photo only particulary mapped). 35 <br />The storage capacity is 7.5MB per disc pack. For the 36 time of 1969, this were incredible dimensions. 35 <br />The storage capacity of the original 8414 series 36 is 7.5MB per disc pack. Our drives (1970s, 8425 series) can 37 already store 50MB. For that time, this was an incredible size. 38 <br />We have currently connected three drives, as you can see 39 in the picture. 37 40 </p> 38 <!--39 <ul id="nav">40 <li><a href="/en/computer/univac9400.shtm#backlink-discdrives">Univac 9400 overview</a></li>41 <li><a href="/en/">technikum29 homepage</a></li>42 </ul>43 -->44 41 </div> 45 42 </div> 43 44 <div class="box center auto-bildbreite"> 45 <img src="/shared/photos/rechnertechnik/univac/diskkoepfe.jpg" alt="Disc heads" width="595" height="511" /> 46 <div class="bildtext"> 47 <p>The disc heads are amazingly big. The moving coil (on the left hand) 48 plunges into an heavy pot magnet (not visible in the picture) and 49 thus moves the complete slide on it's position. 50 <br/>Therefore it works just as an ordinary loudspeaker, but the moving 51 masses are much higher. The predecessor still moved the sled pneumatically. 52 <br/>There is a bottle of wine in the right hand of the picture for 53 comparison. 54 </p> 55 </div> 56 </div> 57 46 58 47 59 </div><!--content -->
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