Future Research Directions
Evolvable hardware problems fall into two categories: original design and adaptive systems. Original design uses evolutionary algorithms to design a system that meets a predefined specification. Adaptive systems reconfigure an existing design to counteract faults or a changed operational environment.
Original design of digital systems is not of much interest because industry already can synthesize enormously complex circuitry. For example, one can buy IP to synthesize USB port circuitry, ethernet microcontrollers and even entire RISC processors. Some research into original design still yields useful results, for example genetic algorithms have been used to design logic systems with integrated fault detection that outperform hand designed equivalents. Original design of analog circuitry is still a wide-open research area. Indeed, the analog design industry is nowhere near as mature as is the digital design industry. Adaptive systems has been and remains an area of intense interest.
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