ANALYSIS AND DESIGN INFORMATION SYSTEM
(Part I)
DEFINITION SISTEM
There are two approach definition of system:
· Approach of procedure
System is a working network from procedures which is interaction and work along to finish purpose.
Procedure is a correct medley of instruction steps explaining what have to be done, who have to do, when have to be done and how to do that.
· Approach of element
System is corps of elements which is have interaction to reach specific-purpose
So Systemè reach a purpose (goal)
è reach a target (objective)
CHARACTERISTIC SYSTEM
· Components
A system have components which interact, work along to form an unity. Supra system is a large system.
· Boundary
Limiting system with other system / external environment its.
· Environments
Environment is Any beyond the bounds of from system of yg influence system operation
· Interface
Media link between a subsystem with other subsystem.
· Input
Entered energy into system can in the form of treatment input and signal input.
· Output
Result from processed energy and classified become output which good for and rest of dismissal.
· Process
Process is change an input become output.
· Target/goal
Otherwise have the target then system operation there will be no utilizing of. System told succeed if have reach the target/ goal.
The Picture of characteristic system
CLASSIFICATION OF SYSTEM
· Abstraction System
For example: religion system
· Physical System
For example: System of Akutansi, System Production
· Natural System
For example: system rotation ,system earth of grafitasi
· Artificial System
For example: computer system
· Certain System
For example: computer system
· Indefinite System
For example: sale system
· Open System
This system accept input and yield output from external environment to have good operation system.
· Closed System
Do not affect or information of energi with external system environment.
WHAT IS INFORMATION?
Information is processing data become more good for and more meaning to user.
The Picture of information siklus
QUALITY OF INFORMATION
· Accurate information
Free from mistakes and not deflect or mislead
· Punctuallyincoming
Information at receiver must be on time
· Relevantly
Information have benefit for its usage
WHAT IS INFORMATION SYSTEM?
Information System is an system in a organization to meet requirement of processing of daily transaction, supporting operation, having the character of manajerial and activity of strategy from a[n organization and provide certain outside party with needed report report.