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Software (System software (Operating systems are essential as it manages…
Software
System software
Operating systems are essential as it manages all other programs being used e.g. IOS, Windows etc.
Utility software: a program that carries out a specific to assist the operating system e.g. Disk defragmentation, task scheduling, data backups
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Modes of processing
Batch processing
Data is processed in groups as the data is similar, and inputs the data all at once
Multi-user system
Many users at different computers sharing the processor of a powerful computer and this is known as "time-sharing"
Real-time processing
Data is processed immediately, output is processed quickly e.g. air traffic control
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Data backup and restore
When everything on a hard disk is backed up, it is known as a full backup
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Data can be backed up to other hard disks, or to servers on the internet (cloud backup)
Anti-virus
Antivirus software is responsible for detecting, blocking and quarantining computer viruses
A virus is a malicious software program designed to copy itself onto a computer in order to obtain, alter or delete stored data
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