Bird & Layzell – Evolved Radio

• Intrinsic evolution of electronic circuits in hardware

• Tried to evolve oscillator circuits of precise frequencies

• Succeeded, but circuits were hard to analyse

• It turned out that they often used electromagnetic information channels from external environment

  • Some evolved a radio antenna to amplify radio signals present in air (being emitted by nearby Pcs)
  • Others used other signals such as the voltage supply to a nearby soldering iron

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