Index: /en/computer/early-computers.php
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--- /en/computer/early-computers.php (revision 866)
+++ /en/computer/early-computers.php (revision 867)
@@ -52,10 +52,15 @@
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).
Here you can see a picture of the
-LGP-21 disk drive
-
+a reasonable size back then.
+
+
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 @@ -182,4 +184,5 @@