[TUHS] RIP Claude Shannon

Dave Horsfall dave at horsfall.org
Sat Feb 24 07:44:22 AEST 2018

We lost Claude Shannon on this day in 2001.  He was a mathematician, 
electrical engineer, and cryptographer; he is regarded as the "father" of 
information theory, and he pioneered digital circuit design.  Amongst 
other things he built a barbed-wire telegraph, the "Ultimate Machine" (it 
reached up and switched itself off), a Roman numeral computer ("THROBAC"), 
the Minivac 601 (a digital trainer), a Rubik's Cube solver, a mechanical 
mouse that learned how to solve mazes, and outlined a chess program 
(pre-Belle).  He formulated the security mantra "The enemy knows the 
system", and did top-secret work in WW-2 on crypto and fire-control 

Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."

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