Software
System software
Operating system
Utility software
Locates free memory (RAM) and allocates it to programs
Manages storage of files/data, unnecessary files can be deleted.
Allocates processing time (using time slices) to programs.
A pre-installed application that carries out a specific task to help the OS
Application software
Packaged
An application widely available for download for everyone
Tailored
A program developed for a specific organisation/people.
Low cost, sometimes free
High cost
e.g. database management for school, bank, etc.
e.g. MS word, photoshop, etc.
Disk defragmentation
Reorganises the hard drive so all the data from a file is stored next to each other for easier access
When data is stored and deleted on a hard drive, it can fragment
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