Some Notable Universal Turing Machines

Alan Turing's
original machine (1936)

Marvin Minsky's
7,4 machine (1967)

Stephen Wolfram's
2,5 machine (2002)

Alan Turing's Original Universal Machine (1936)

Marvin Minsky's 7,4 Universal Turing Machine (1967)

Stephen Wolfram's 2,5 Universal Turing Machine (2002)