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There are two groups of approaches in defining the system, namely the emphasis on the procedure and the stresses on the components or elements.
1. Systems approach with emphasis on procedure defines the system as follows:"A system is a network of procedures which are interconnected, gathered together to perform an activity or to accomplish a certain goal".
According to Jerry FitzGerald, Ardra F. Fitzgerald and Warren D. Stallings, Jr.., Defines the procedure as follows:
"A procedure is the proper sequence of steps of instructions that explain what (What) What to do, Who (Who) are working on it, When (When) do and How (How) do"
2. Systems approach is more emphasis on the element or component thereof defines this system as follows:"The system is a collection of elements that interact to achieve a certain goal"
Or,
"The system is a set of elements (subsystems) are interlinked or integrated with a view to achieving a goal".
Both groups of the definition is correct and not contradictory, that is different is how to approach. Systems approach which is a collection of elements or components or subsystems is a broader definition. This definition is more widely accepted, because the fact that a system can consist of several subsystems or system parts. For example, the accounting system can consist of several subsystems, namely sales accounting subsystem, the subsystem of purchase accounting, payroll accounting subsystem, subsystem cost accounting and so forth.
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