evolvable hardware (EHW) refers to the hardware architecture / structure and functions change dynamically and autonomously in order to improve performance in carrying out the task. EHW provides an ideal approach to make the "soft" by adapting the structure to dynamic problems. Contributions in this book provide the basics of reconfigurable devices so that the reader will be fully prepared to understand what EHW, why it is necessary and how it was designed. Professionals and students in the field of evolutionary computing will find a comprehensive resource that provides valuable both fundamentals and recent advances in evolvable hardware.