ABSTRACT

System is a word used to describe a collection of related components, which interact as a whole. A motorway system, the education system or computer systems are three varied examples. A large system is often made up of many smaller systems which in turn can each be made up of smaller systems and so on. Figure 4.1 shows how this can be represented in a visual form. One further defi nition: ‘A group of devices serving a common purpose’.