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1.5 Systems Software, user - Coggle Diagram
1.5 Systems Software
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operating systems 1
Multitasking
running multiple applications at the same time by giving each application a small time-slice of processor time
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memory management
when programs are loaded, the operating system decides where there are held in memory
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Utility system software
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defragmentation
defragmentation utilities reorganise files on a hard disk, putting fragments of files back together and collects together free space
this reduces the movement of read/write head across the surface of the disk, which speeds up file access
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data compression
compression utilities reduce the size of a file so that it takes up less space, and is quicker to download over the internet
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depending on the algorithm used, data is other lost or represented in a different way(retaining original data)
Operating systems 2
User management
the operating system will retain settings for each user, such as icons, desktop backgrounds
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a client server network may impose a fixed or a roaming profile for a user, and manage login requests to the network
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file management
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the OS may present a logical structure of files into folders, and allow the user to rename, delete and copy files
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