RTCSA brings together researchers and developers from academia and industry for advancing the technology of embedded and real-time computing systems and applications. The proceedings investigates advances in embedded and real-time systems and ubiquitous computing applications, promotes interaction among the areas of embedded computing, real-time computing and ubiquitous computing. RTCSA 2006 also evaluates the maturity and directions of embedded and real-time system and ubiquitous computing technology.