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SYSTEM SOFTWARE, Functions of operating system, Types of utility program,…
SYSTEM SOFTWARE
Definition of software:
Software is a series of instructions that tells a computer what tasks to perform and how to perform them
Proprietary Software
- Private owned and limited to a specific vendor or computer model and need yearly license
Open Source Software
- Software which can be used, modified and improved by anyone and can be redistributed freely
Definition of system software:
Programs that control or maintain the operations of the computer and its devices
Function of system software:
Serves as the interface between the user, the application software, and the computer's hardware
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Operating System (OS)
Definition of operating system:
A set of programs that coordinate all activities among computer or mobile device hardware
Server Operating Systems
- A multiuser operating system that organizes and coordinates how multiple users access and share resources on a network
Mobile Operating Systems
- An operating system that resides on mobile devices such as smartphones
Desktop Operating Systems
- A complete operating system that works on a desktops laptops and some tablets
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Antivirus Program
A utility program that protects a computer against malware such as virus, worm and Trojan horse
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Spyware Remover
A utility program that detects and deletes spyware.
Spyware is a program placed on a computer without the user's knowledge that secretly collects information about the user
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Adware Remover
A utility program that detects and delete adware
Adware is a software that displays unwanted ads when a user is online collects marketing data and other information without the user's knowledge
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Disk Defragmenter
A utility program that reorganizes files and unused space on a hard disk so that OS access data more quickly and program runs faster
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