Understanding System

To initiate a discussion of the analysis and design of information systems, an understanding of the system must first be emphasized. Definition of the system evolve according to the context in which sense the system is used. The following definitions will be given some general system

1. And a collection of parts that work together to achieve the same goal.

Example:

• Solar system
• Digestive System
• Public Transportation Systems
• Automotive systems
• Computer Systems
• Information Systems

2. A collection of objects that relate to and interact with each other as well as relationships between objects can be viewed as a whole is designed to achieve one goal.

Thus, simply as a set or sets and the elements or variables that are mutually organized interacting, and interdependent with each other. Murdick and Ross (1993) defines a system as a set of elements that are combined with each other for a common goal. Meanwhile, the system definition in Webster's  Unbriged dictionary are elements that are interconnected and form a single unit or organization.

According to Scott (1996), and the system comprises elements such as input, processing and output. Principal feature of the system according to Gapspert there are four, namely that the system operates in an environment, consist of elements, characterized by interconnected, and have the functions of or saw the main purpose.

System or system approach must be at least had four components, namely input, processing, output, and feedback or control. While Mc. Leod (1995) defines a system as a group of elements that are integrated with the same intent to achieve a goal. Resource flows and output elements and to ensure the process goes well then connected to the control mechanism.

Many experts put forward the concept of systems with different descriptions, but in principle similar to the basic concepts of the system generally. Schronderberg (1971) in Suradinata (1996) briefly describes the system are:

1. These components are interconnected to each other.
2. A whole without separating the constituent components.
3. Together to achieve goals.
4. Has inputs and outputs needed by other systems.
5. There are processes that transform inputs into outputs.
6. Indicates the existence of entropy.
7. Have rules.
8. Has a smaller subsystem.
9. Have a differentiation between subsystems.
10. Have the same goal even though the beginning is different.