thanks for the reply. This thread is for the eng who are more in dev side of embedded hardware and find difficulty to find one with the interfaces they can easily find with no cost. Initially we donot need to have the the spects as we can easily use the Java for development as all the current mobiles are supporting it, we can easily use the code interface as the OS on the board allow us to communicate with the interface. All the mobiles today have USB, ifra red , bluetooth , WIFI interfaces which we can use for the expention of the hardware. This thread is just to spread the thought for newbies who want to go more in embeded environment and like to develop with a minimal cost. As Dev boards are costly and non all of them have all the functionalities which they can get free in there pocket.