A Comparative Study of Software Component Models for Embedded Real Time SystemsStudent:Imran AfzalMSc Computer Science with Software Engineering ProfileDepartment of Computer Science and Electronics (IDE)Mlardalen University, Swedenain05001student.mdh.seSupervisor:Frank LdersDepartment of Computer Science and Electronics (IDE)Mlardalen University, Swedenfrank.ludersmdh.seExaminer:Ivica CrnkovicDepartment of Computer Science and Electronics (IDE)Mlardalen University, Swedenivica.crnkovicmdh.seMaster Thesis (D Level)AbstractIt is no doubt that at the moment time is so important for every one in every kind of field. So it is the requirement of time to produce suck kind of products which consumes les time. But now it is right to say that there are such products available in market which really changes our lives. At the moment every manufacturing company trying to use such kind of CPUs that really helps to develop the embedded systems. Even if we observe our daily life we find such kind of thing s which we really ignored uses embedded systems. At the moment there are different components are used to develop the embedded systems. The most important component at the moment is Koala component which is developed by the Philips. Philips used Koala in developing the consumer electronic products. Koala has its own characteristics due to which Philips used it. There are also real time embedded systems which use such kind of components. There are different kinds of real time systems. There is a main idea behind real time system that they have to reply in a specific time to a specific task. There is a complete a life cycle of the real time systems. There are also different areas in which embedded systems are used at the moment. There is main advantage of Koala components that there are different graphical functions for different files even up to 100Mbps. AcknowledgementsWith the name of Allah Almighty who is most beneficent and merciful. First I would like to thank my supervisor Frank Luder due to his kindness and help which really courage me to complete my thesis within the time. I am also thankful to Christen Sandberg who really helps me in finding the room because such kind of work really needs your full attention. I specially thanks to my Pakistani Friends who really help me during my whole effort. A very special thanks to my whole family because they really courage me to do some thing. The most important person in my family is my uncle Muhammad Afzal who really courage me and put his all efforts to me. I am proud of being his Son because I think that if I am at this stage due his efforts. He has a great dream to see me successful in my life. I hope that I will fulfill my uncles Dream. 1 Introduction.42 Embedded Real Time Systems .52.1 History of Embedded Systems.52.2 What is Embedded System?.62.3 What is Real Time System?.62.4 Areas of Use.63 The koala Component Model.73.1 What is Koala?.73.2 Koala Language .73.2.1 Requirements .73.2.2 General Concepts .83.2.3 Binding and Bind Time.83.2.4 Koala Components.83.2.5 Diversity interfaces .83.2.6 Product-Line Architecture .93.2.7 Creating Products.103.2.8 Handling Versions and Variants .103.3 Koala Component Model for Consumer Electronics Software .