Classes of Software Systems (cont.)
	ä General software products ä Database, Compilers,  Code generation tools ä Changes are usually incremental, functionality is added from release to release ä Need to exploit new technologies as they emerge ä For example integration with the Internet ä In general: ä Embedded/hard real time and real-time require the most analysis and design, and are the most expensive to build ä General software products become more and more difficult to modify as they age