Functions Of An Operating System
- Created by: apmartinl
- Created on: 28-04-17 10:02
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- Functions Of An Operating System
- User Interface - provides an interface for the user to interact with the device
- GUI - Graphical user interface, easy to use, uses windows, icons and imagery.
- WIMP interfaces - users can click on icons using a curser, icons representing functions.
- Voice activated - siri cortana, google Real Time -automatic doors
- CLI - Command line interface, used by proffesionals using command lines in a balck box.
- Uses less RAM but the commands have to be inputted exactly to be used
- Menu Driven Interfaces - Less commonly used but prevalent in some areas like TV
- WYSIWYG - What you see is what you get., refers to print preview.
- GUI - Graphical user interface, easy to use, uses windows, icons and imagery.
- Multi Tasking
- Computer can only perform one task at a time.
- The tasks take turns to get processor time extremely quickly to execute instructions and make it look as the computer is performing more than one function at once.
- The OS (operating system) manages how the processor shares its time.
- Memory Time
- To run a program, the computer must copy the program memory from storage.
- The operating system keeps a record where each program and its data is located.
- File Management
- Makes it easy for the user to find the correct files because each file has a unique name.
- File system can become corrupt if an computer is turned off before a program is copied
- Peripheral Data
- Each program has its own machine code.
- Device drivers manage connections with peripherals. Each has its own rules which dictates how it transmits data values.
- User Interface - provides an interface for the user to interact with the device
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