System
There are two approaches to define the system
1. Procedure Approach
Definition of procedure by Jerry FitzGerald, Ardra F. FitzGerald and Warren D. Stallings as that :
A procedure is a good arrangement of step by step instruction, that to explane what must i do (what), who must to do it (who), when to do it (when), and how to do it (how).
Definition of System based on procedure approach is a work of network from procedures which is having a mutual connection and together to do the activity or to finish a certain target.
2. Element Approach
Definition of system based on element approach is interacted a group of elements to achieve a certain goal.
A system have definite porpuse. Some people said, meaning of a system is to reach a purpose(goal), and some people said to reach a target (objectives).
The characteristic of the system
- Components of system
An integrated a set of components for collecting, storing and communicating information.
- Boundary of system
Boundary of system is scope area between another system and environment.
- Environment
Environment means is everything outside the system boundary.
- Interface
Link between subsystems to another subsystem
- input
The Energy entered into system. Input can be the treatment input ( input maintenance) and input of signal ( input signal).be the example of in computer system, treatment input is a programe, input of signal is a data.
- output
The Result of energy is processed and classified to be output which usefull and rest of dismissal. Example of the system of computer, the hot that yielded is the rest of dismissal, while information is output which good for.
- Processing
A process from input to be output
- Goal
It’s functioning because there are limits to what it can do and how it can achieve its purpose within its environment
Classification of system
Definition 1 :
1. Abstraction system : system in the form of idea.
2. Physical system : existing system physically.
Definition 2 :
1. Natural system : the system that occur passing natural’s process , the system doesn’t made by human (circle of earth).
2. Artificial system : the system that created by human (Human-Machine System).
Definition 3 :
1. Specifics system : the system operate with attitude that can be predicted.
2. Unspecific system : the system that futures condition doesn’t be predicted.
Definition 4 :
1. Closed’s system : the system doesn’t relation and effect the outside’s environment.
2. Open’s system : the system is relation and effect the outside’s environment
Source : Analisis & Desain. Prof.Dr. Jogiyanto HM,MBA,Akt. Penerbit Andi: Yogyakarta 2005
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