ETAI 2013 is the 11th in the series of thematic conferences organized by the Society for ETAI of the Republic of Macedonia. Previously, ETAI conferences were held in '82, '85, '89, '93, 2000, 2003, 2005, 2007, 2009 and 2011. Traditionally, ETAI conferences have been held in the ambient of the exceptional natural beauty and cultural heritage of Ohrid area, protected by the UNESCO. Following its interdisciplinary character, the scope of the Conference is rather broad. Its purpose is to present state of the art and advance both the theoretical and applied aspects in the areas of Electronics, Telecommunications, Automation and Informatics. The goal of the Conference is to provide a forum for sharing knowledge and experience among experts from both academic institutions and business/industry enterprises in the areas of Electronics, Telecommunications, Automation and Informatics. Thus, it is expected that the Conference will provide a setting for discussion on different concepts, methods and technologies for the benefit of advancing these areas in the country and wider.