The Universal Turing Machine implemented in NXC, which runs on the LEGO device we made: http://www.legoturingmachine.org
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README.txt

To honour Alan Turing, we have built a simple LEGO Turing Machine.
Primary goals were to make every operation as visible as possible
and to make it using just a single LEGO MINDSTORMS NXT set.
The LEGO Turing Machine is part of the exhibition Turing's Legacy at CWI.

For more information, visit http://www.legoturingmachine.org/