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2.0 Computer System 2.1.1 OVERVIEW OF COMPUTER SYSTEM (Components of…
2.0 Computer System
2.1.1 OVERVIEW OF
COMPUTER SYSTEM
Computer
An electronic device that accepts data (input), process data, produces information (output) and store the information for future use.
Computer System
A complete, working computer that includes operating system, software and hardware which are necessary to make the computer function
Components of Computer System
Hardware
Input Devices
System Unit
Output Devices
Storage Devices
Software
System Software
Operating System
Utility Program
Application Software
Input-Process-Output-Storage (IPOS) Model or Information Processing Cycle
Input
Any data or instruction entered into the memory of a computer.
Process
Transforming data into information.
Output
Data that has been processed into a useful form (information).
Storage
Location in which data, instructions and information are held for future use.
Data
Collection of unprocessed items.
Information
Processed data that conveys meaning and is useful to people.
