Changeset 246 in t29-www for en


Ignore:
Timestamp:
Dec 13, 2011, 10:55:20 PM (11 years ago)
Author:
heribert
Message:

Alle moeglichen Updates seit Ewigkeiten.

Location:
en
Files:
4 edited

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  • en/computer/early-computers.shtm

    r238 r246  
    2121<div id="content">
    2222    <h2><!--#echo var="title" --></h2>
    23 
     23       
     24<h3 id="lpg21-en">Schoppe & Faeser:  LGP-21 (General Precision) </h3>
     25       
     26        <!-- Bild über ganze Breite (geht bei schmalen Monitoren ins Menü rein) -->
     27        <!-- Implementierung dafür steht im common.css, Zeile 300ff. -->
     28    <div class="box center" style="position:relative;">
     29       <div style="position:absolute; top:0px;"><img src="/shared/photos/rechnertechnik/lgp-21.jpg" width="967" height="443" alt="LGP 21 Computeranlage" />
     30</div>
     31        <div style="height: 443px;">&nbsp;</div>
     32                <p class="bildtext small">From left to right: magnetic tape drive, 1. LGP-21, Tally paper-tape-reader and punch, 2. Tally reader, two additional hard drives, 2. LGP-21, Flexowriter</p>
     33               
     34    </div>
     35               
     36                <p>The <b>LPG21</b> computer by General Precision was released and licensed in the
     37USA in 1962. Paying royalities, the german company "Schoppe & Faser"
     38copied this computer with a new frontend design, calling it <b>"EUROCOMP"</b>
     39(1964).<br>
     40 It's a very small mainframe, advertised as the "first
     41full-capability computer priced from $ 16,250". Of course this price was
     42only offered for the bare CPU. Including the minimal equipment
     43(flexowriter, tape reader and puncher) the overall price was about $ 30,000.<br>
     44
     45<div class="box left clear-after">
     46                <img src="/shared/photos/rechnertechnik/tally-lochstreifenleser.jpg" width="603" height="241" alt="Tally Lochstreifenleser" />
     47                <p class="bildtext small">The external memory of the LGP-21 are perforated papertapes, which are scanned mechanically of the Tally-tape reader. The magnetic tape drive and other external drives were added in the late 60s.</p></div>
     48               
     49The (rotating) disc (with fixed heads) is used as storage and clock
     50generator. Our installation, as shown above, features a lot of
     51periphery: A magnetic tape station (1/4" tapes), paper tape
     52reader/puncher, an additional hard disc and a flexowriter (printer and
     53manual tape puncher for data/programs).<br>
     54Once again, the reperation will be a challenge. More information will be
     55disclosed later.</p>
     56
     57       
     58        <h3>Mini-Computers</h3>
     59       
    2460    <p>Today's kids think of the latest mobile devices when talking about "mini computers".
    2561           In contrast, in the 1960s and the early 70s, a computer was always huge (like our
    … …  
    330366                </p>
    331367    </div>
    332 
     368       
     369       
     370 <h3 id="nova-en">Data General: NOVA 2</h3>
     371   
     372   <div class="box left">
     373      <img src="/shared/photos/rechnertechnik/nova2.jpg" width="400" height="561" alt="Data General: NOVA 2" />
     374<p>     Edson de Castro was responsible for product management at DEC and was intent
     375on developing a 16-bit computer with a processor that would fit on a single
     376printed circuit board. But Ken Olson, the founder of DEC, wasn't
     377supportive. So de Castro left DEC in 1968 together with three other
     378hardware engineers to found his own company in a vacant barber's shop:
     379<b>Data General Corporation </b>(Massachusetts, USA).<br>
     380
     381Already in 1969 the first 16-bit computer in the <b>"NOVA" </b>series was ready
     382for the market. Thanks to the simpler production method (no wire wrapping,
     383only two boards + memory boards etc.) the basic version was quite inexpensive
     384at $4000. However, this basic model alone wasn't really that useful, and
     385after extending the computer the total price was substantially higher.
     386The Nova computer was advertised as "the best small computer in the world".
     387At this time, DEC was still building the PDP-8/I and the PDP-12, which
     388required lots of very small flip-chip-modules. <br>
     389
     390The successor model (available in 1973), the<b> NOVA 2</b>, was simplified even
     391further, and the increased chip density made it possible to have the whole
     392processor together with the control logic for slow peripheral devices
     393(teletype, paper tape puncher and reader) one single board. Our Nova is a
     394NOVA 2/10 model with slots for 10 boards, and therefore enough space for
     395quite a few device controllers and memory extensions.<br>
     396
     397
     398From today's perspective, the rather huge boards (15x15 inch,
     399nicknamed "circuit graveyards in baking tray size") do have disadvantages:
     400any kind of repair is very difficult, because it is not possible to pin down
     401a malfunction by exchanging small boards.<br>
     402
     403The NOVA shown in the picture is from a university. It is equipped with
     404two harddisk drives, one twin floppy drive (8" disks!), one teletype,
     405one high-speed paper tape punch reader and one punch card reader (not in
     406the picture). Later on a terminal was added, which extended the computer
     407to a comfortably usable system.</p>
     408
     409The details are better visible in a larger photo: <a  class="popup" href="/shared/photos/rechnertechnik/nova-detail.jpg">NOVA 2 with terminal</a><br>
     410
     411          <p class="bildtext small">
     412Hardware configuration, from top to bottom:<br>
     413<dl>
     414
     415<dd>Paper tape punch reader (mostly used for testing programs included with
     416  every delivered system)
     417<dd>Twin disk drive for 8-inch floppy disks, Model 6032
     418<dd>CPU with core memory, 32 KB, access time 0.8 us
     419<dd>Two hard-disk drives with removable cartridges, Series 30. Capacity
     420  1.200.000 16-bit words, or 2.4 MB.
     421<dd>Disk Cartridge System 4047, necessary to connect the second disk
     422<dd>Terminal "DASHER 1", Model 6052 by Data General, on the right hand side
     423</dl></small>     
     424 </div>
     425 
     426 
    333427    <h3>WANG 2200 with bulky peripheral hardware</h3>
    334428    <p>Next, the first system that looks like today's computer is presented: <a class="go" href="/en/devices/wang2200.shtm">WANG 2200</a>, year of manufacture 1973. This computer, with so many peripheral devices, is probably unique in Germany. The peripherals: paper tape reader, punch card reader,  triple 8-inch disc drive, hard disc system with 38cm diameter disks (the device weights 100kg and cost 24000 DM, but only holdy 5MB), special BASIC-language keyboard, etc.</p>

  • en/dev/translation/editor.js

    r218 r246  
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  • en/news.shtm

    r244 r246  
    2828
    2929    <ul class="news-feed">
    30        
     30        <li><h3>August 2011</h3>
     31<div class="box left">
     32<img src="/shared/photos/rechnertechnik/lgp21-0.jpg" width="300" height="151"/>
     33</div>
     34
     35
     36We 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>
     42We 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.
     43One of the first computers which Word length is a multiple of a byte (octett).
     44<div class="clear"></div></li>
     45
     46
     47
    3148        <li><h3>June 2011</h3>
    3249<div class="box left">
    … …  
    3653<div class="clear"></div></li>
    3754
    38        <li><h3>October 2010</h3>
    39         <div class="left clear-after">
    40          <img src="/shared/photos/rechnertechnik/pdp12.jpg" width="350" height="426" alt="DEC Clinical LAB12" />
    41          <p class="bildtext">An important new scientifical computer:
    42             A <a class="go" href="/en/computer/early-computers.shtm#pdp12">PDP-12 (actually Clinical LAB 12) from DEC</a>, year of manufacture 1968/69.
    43             <br>This well equipped laboratory computer fills the gap of 12 bit computers made by DEC from 1965 to 1971.
    44          </p>
    45         </div>
    46 
    47        <li><h3>September 2010</h3>
    48        
    49         <div class="left clear-after">
    50                <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>
    51                <p class="bildtext">
    52                       We got a big <a href="/en/miscellaneous.shtm#demo" class="go">educational computer model</a> made by Siemens from 1973.</p>
    53            </p>
    54         </div></li>
     55       
    5556       
    5657     

  • en/search.shtm

    r234 r246  
    4444    <p>We are always looking for:</p>
    4545    <ul>
    46         <li><b>Circuit diagramms (copies) for the Computer LGP-21, manuals and spare parts.<br>
    47         The LGP-21 was built by General Precision about 1963 (and under license from Schoppe & Faeser, Germany)</b></li><br>
    48        
    49        
    50         <li>Any kind of tube calculators</li>
     46        <li>Any kind of tube calculators, for example LGP-30</li>
    5147        <li>Very old plotter</li>
    5248        <li>Any kind of telegraph technology</li>
    53         <li>All manuals for the <a href="/en/computer/tabulating-machine.shtm#bull3">BULL GAMMA 3</a> and <a href="/en/computer/tabulating-machine.shtm#bull10">GAMMA 10</a></li>
     49        <li>All manuals for the <a href="/en/computer/tabulating-machine.shtm#bull3">BULL GAMMA 3</a> and BULL GAMMA 55</li>
    5450        <li>... and everything that is suitable for our collection</li>
    5551      </ul>
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