There are millions of systems in operation in the world around us at every moment in time. As I told you in the earlier, system is a collection of units that works together. Therefore, involvement of computers is not necessary. Some of real world systems are listed bellow;
- Family - a family is consist of two or more units, father, mother and children for example.
- School - school is a large system consists of student units, class units, teacher units, etc.
- Computer based business systems - MIS, DSS, CMS
