Changeset 867 in t29-www

Timestamp:

Oct 24, 2015, 11:26:15 PM (8 years ago)

Author:

heribert

Message:

Bild eingebunden

File:

• en/computer/early-computers.php (modified) (3 diffs)

en/computer/early-computers.php

@@ -52 +52 @@
 A rotating disk serves as the machine's main memory and clock generator. It
 rotates with 1475 RPM and holds 4096 words of 32 bits each which equals 12 kB,
-a reasonable size back then. The disk contains 64 data tracks, four timing
-tracks and tracks for three registers (accumulator, instruction register and
-counter register). The mean write density is about 10 Bit/mm (about 1/200th of
-today's disk drives).<br> Here you can see a picture of the 
-<a  class="popup" href="/shared/photos/rechnertechnik/lgp21-platte.jpg"><b>LGP-21 disk drive</b></a><br>
-
+a reasonable size back then. 
+
+<div class="box left">
+<a  class="popup" href="/shared/photos/rechnertechnik/lgp21-platte.jpg">LGP-21 disk drive
+                <img src="/shared/photos/rechnertechnik/lgp21-platte.jpg" width="300" height="270" alt="LGP-21 disk drive" /></a>
+        </div>
+<br>
+The disk contains 64 data tracks, four timing tracks and tracks for three registers (accumulator, instruction register and
+counter register). 
+The mean write density is about 10 Bit/mm (about 1/200th of
+today's disk drives).<br>
 The LGP-21 supports 23 different instructions - enough to program typical
 scientific applications.<br>
@@ -64 +69 @@
 of this type helps a lot.
 
-More information about this interesting and rare system will follow.</p>
-
-
-                
-</p>
+More information about this interesting and rare system will follow.</p>                
+
 
         
         <h3>Mini-Computers</h3>
-        
+
     <p>Today's kids think of the latest mobile devices when talking about "mini computers".
            In contrast, in the 1960s and the early 70s, a computer was always huge (like our
@@ -182 +184 @@
                  
         <h3 id="pdp8L">PDP-8L</h3>
+        <br>
         <div class="box desc-left borderless">
                 <img src="/shared/photos/rechnertechnik/dec/pdp-8L.jpg" width="400" height="360" alt="DEC PDP-8L" />