A SystemA basic definition of a system: A group of interrelated or interacting elements forming a unified whole
Some examples…
The solar system
The production system of a factory
The biological system of the human body
Some examples…
The solar system
The production system of a factory
The biological system of the human body
A system involves transformation
The Processing Cycle
Input, processing and output, together with storage is often called the
Information Processing Cycle
or processing cycle
or the IPO cycle
Information Processing Cycle
or processing cycle
or the IPO cycle
A simple IPO
Shopping
Barcodes scanned (input)
Prices, tax and total calculated (processing)
Amount due displayed (output)
Transaction saved (storage)
Communication may also be a part of this
Shop-Bank for card transaction
Barcodes scanned (input)
Prices, tax and total calculated (processing)
Amount due displayed (output)
Transaction saved (storage)
Communication may also be a part of this
Shop-Bank for card transaction
Components of a computer based system
1-Data
2-Software
3-Hardware
4-Procedures
5-People
6-Connectivity
2-Software
3-Hardware
4-Procedures
5-People
6-Connectivity
Data
Data is a collection of unorganised facts, unprocessed items, which can include:
Letters, numbers
Line thickness, magnetic strips
Data is an input in the Information Processing Cycle
Letters, numbers
Line thickness, magnetic strips
Data is an input in the Information Processing Cycle
InformationInformation is data organised and given meaning, which can include:
The letter, report, essay or spreadsheet
The text printed on the sales docket
The letter, report, essay or spreadsheet
The text printed on the sales docket
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