system concept 4.ppt
TRANSCRIPT
![Page 1: system concept 4.ppt](https://reader036.vdocuments.site/reader036/viewer/2022081506/563db845550346aa9a922608/html5/thumbnails/1.jpg)
Concept of Information Systems
![Page 2: system concept 4.ppt](https://reader036.vdocuments.site/reader036/viewer/2022081506/563db845550346aa9a922608/html5/thumbnails/2.jpg)
system• A set of interacting components that
operate together to accomplish a purpose
![Page 3: system concept 4.ppt](https://reader036.vdocuments.site/reader036/viewer/2022081506/563db845550346aa9a922608/html5/thumbnails/3.jpg)
What is a SYSTEM?
• A system is a group of interrelated components working together toward a common goal by accepting inputs and producing outputs in an organized transformation process.
S1S2
S3S4
Systems structure
Subsystems
Systems Boundary
Environment
Systems Input Output
![Page 4: system concept 4.ppt](https://reader036.vdocuments.site/reader036/viewer/2022081506/563db845550346aa9a922608/html5/thumbnails/4.jpg)
Abstract Concept of a Systems
INPUT OUTPUTPROCESS
FEEDBACK
![Page 5: system concept 4.ppt](https://reader036.vdocuments.site/reader036/viewer/2022081506/563db845550346aa9a922608/html5/thumbnails/5.jpg)
System properties
• A system has– Purpose– Boundary– Environment– Inputs– Outputs
![Page 6: system concept 4.ppt](https://reader036.vdocuments.site/reader036/viewer/2022081506/563db845550346aa9a922608/html5/thumbnails/6.jpg)
Example: a manufacturing system
INPUTof raw materials
OUTPUT of finished products
Manufacturing
PROCESS
Control byManagement
Control signals
Control signals
Feedback signals
Feedback signals
System Boundary
Environment
![Page 7: system concept 4.ppt](https://reader036.vdocuments.site/reader036/viewer/2022081506/563db845550346aa9a922608/html5/thumbnails/7.jpg)
What is an Information Systems?
• An information system can be any organized combination of people, hardware, software, communications network, and data resources that collects, transforms, and disseminates information in an organization
![Page 8: system concept 4.ppt](https://reader036.vdocuments.site/reader036/viewer/2022081506/563db845550346aa9a922608/html5/thumbnails/8.jpg)
Components of an Information System
Control
Input Process
Memory
Output
DataPeople
Software
network
computer
![Page 9: system concept 4.ppt](https://reader036.vdocuments.site/reader036/viewer/2022081506/563db845550346aa9a922608/html5/thumbnails/9.jpg)
Information Systems Activities
• Input of Data– Manual input by key, scanning, sound, image,…
• Processing of Data into Information– Calculate, sort, find, report, disseminate……
• Output of Information Products– Report, display, suggestion, ……
• Storage of Data Resource– Database, data file, maintenance, …..
• Control of System Performance– Audit, ……
![Page 10: system concept 4.ppt](https://reader036.vdocuments.site/reader036/viewer/2022081506/563db845550346aa9a922608/html5/thumbnails/10.jpg)
Phases in building and maintaining systems
• Initiation
• Development
• Implementation
• Operation & Maintenance