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.
The postings on this site are my own and do not represent the positions, strategies or opinions of any former, current or future employer of mine.
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