Introduction to Reconfigurable Computing Systems. Organization of the Field of Configurable Resources. Architecture of the On-Chip Processing Elements. Reconfigurable Communication Infrastructure in the FCR. System-Level Organization of the FCR. Configuration Memory and Architecture Virtualization in RCS. Reconfiguration Process Organization in the On-Chip Level of a Reconfigurable Computing System. RCS Architecture Configuration and Runtime Reconfiguration. Virtualization of the Architectural Components of a System on Chip. Virtualization of Reconfigurable Computing System Architecture.