System:

An organised relationship among functioning unit is known as system.A system must be build to attain a ppredetermined objective between the component interlinking and interdependense must be present. The aims of the organisation have a greater priority than the aims of its subsystems.

Charecteristics of a System:
1)Organisation:
        This is the way to organising the components that helps to achieve different objective.
2)Interaction:
       It implies the manner in which each unit works with other components of the system.
3)Interdependence:
      It means that parts of the organization or computer units depend on one another.
Classification of System:
     There are two common classification of System:
      1)Physical/Abstract System:Physical systems are any tangible entities that may be static or
        dynamic in operation.ex:-the physical parts of the school or college are office,desks,and
        chairs.Abstract is any non physical entities.it may be similar to formulas which represent       
        relationships among sets of variable.


 
  2)Open/Closed System:An open system has many interfaces with its enviroment.It permits to get          input from outside and transfer outputs to the outside.An informnation system comes into closed
       system.A closed system is isolated from environmental effects.In real life a completely closed
       system is rare.