This module introduces the basic ideas of nature-inspired design techniques. Different algorithms and their applications will be presented. Similarities and differences between these techniques/algorithms and other classical techniques will be discussed whenever appropriate. The design domain ranges from architectural, engineering and graphics design to electronic circuit design and evolvable hardware. Examples of such techniques include evolution and knowledge discovery, circuit design by evolution, novel architectural design by evolution, creative design, interactive evolution, evolutionary graphics, knowledge extraction from evolution, extrinsic evolvable hardware, intrinsic evolvable hardware, on-line adaptation, and implementation issues.