Links from 2011-11-27

The Core Memory Module from my dad’s homebuilt PDP-11/05 | Porkrind Dot Org Missives

This is basically the 1974 version of a DIMM. It measures 16″ by 11.5″ and holds 16 kilobytes. It’s technically 18 bits wide but only 16 were used in the PDP-11. The raised part in the middle is where the cores are actually stored. Each bit is a little ring with 3 wires running through the middle. By running current through the wires you could magnetize or demagnetize each ring. One interesting tidbit is that reading is destructive! When you read a bit you are actually demagnetizing the ring and the memory controller had to then do a write cycle to restore the bit.

Alan Moore – meet the man behind the protest mask | Books | The Observer

From Wall St to Athens and Occupy sit-ins worldwide, protesters are wearing masks inspired by V for Vendetta. Here, its author discusses why his avenging hero has such potency today

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„Leyrers Online Pamphlet“ ist die persönliche Website von mir, Martin Leyrer. Die hier veröffentlichten Beiträge spiegeln meine Ideen, Interessen, meinen Humor und fallweise auch mein Leben wider.
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