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1.7 Operating Systems (Memory Management (MULTI-TASKING (Running multiple…
1.7 Operating Systems
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Systems Software
To provide a platform on which users can run programs to accomplish tasks and maintain their computer system
Two Types: Operating System, Utility Software
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Memory Management
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When programs are loaded, the OS decides where the program will be held in memory
As programs are loaded, the memory becomes Fragmented
If memory becomes full, virtual memory will be used
Device, User & File Management
Peripheral management has a device driver, this translates commands from OS into hardware specific commands that the device understands
User Management
Providing for different users to log into a computer. The OS will retain individual settings for each user. Different users may have different access rights to files and peripherals
Computers store in data in files. In many OS, each file has an extensions that tells the OS which program to load the file into
The OS presents a folder structure to the user, allowing files to be moved, edited, renamed and eleed
As files are saved and deleted, over time, over time the hard disk will become fragmented which slows the computer down