2.7 System Software
Functions of operating system
- Booting - Sleep mode and hibernate. - Enable user to enter data by using command-line. - Allows user to run multiple programs concurrently. - Optimize the use of RAM. - Assesses and reports information about various computer resources and devices. - Establish Internet connection. - Allows user to manage and search files. - Install and update software automatically. - Create user accounts and establish permissions.
Desktop OS
A complete operating system that works on a desktop computer, notebook computer, or mobile computing device.
Spyware
A program placed on a computer without the user's knowledge that secretly collects information about the user.
Back up utility
A program that copy selected files or the entire hard disk to another storage medium.
Adware Remover
A program that detects and deletes adware.
Spyware Remover
A program that detects and deletes spyware and similar programs.
Restore utility
A program that restore data from a backup to the original storage location.
Disk Defragmenter
A program to reorganizes files and unused space on a hard disk for optimal efficiency.
Disk Cleanup
A program used to search for and removes unnecessary files.
Operating System (OS)
A set of programs used to coordinate all activities among computer hardware resources.
Graphical User Interface (GUI)
A user interface which displays images and pictures that allows a computer user to interact with a computer easily.
Examples of Adware Remover
Adware Spy, Ad-Aware SE Personal
Utility Programs
Allows a user to perform maintenance-type tasks.
Manage programs
An OS manages multiple programs and processes while you use the computer.
Mobile Operating System
An operating system designed to be used with mobile phones and other mobile devices.
Example of open source mobile OS
Android
Monitor performance
Assess and report information about various computer resources and devices.
Adware
Displays an online advertisement in a banner or pop-up window.
Example of back-up and restore utility (for computer)
EASEUS ToDo Backup, Recovery Drive
Why use a Disk Defragmenter?
Enable the operating system to accesses data more quickly and make programs run faster.
File Manager
Helps user to keep track of files and folders.
Server Operating System (OS)
High-end programs designed to provide network control and include special functions for connecting computers and other devices into a network.
Network administrator
Individual responsible for maintaining and running a network.
Examples of antivirus program
Kaspersky, Avira, Norton, AVG
Examples of open source Server OS
Linux, Solaris
Examples of open source Desktop OS
Linux, UNIX
Types of system software
Operating System (OS), Utility Programs
Control Network
Organize and coordinate how multiple users access and share resources on a network.
Proprietary Software
Privately owned and limited to a specific vendor or computer model and need yearly license.
Cold Booting
Process of turning on a computer that has been powered off completely.
Definition of system software
Programs that control or maintain the operations of the computer and its devices.
Warm Booting
Restarting a computer that has already been turned on.
Sleep mode
Saves any open documents and programs to RAM, turns off all unneeded functions, and then places the computer in a low-power state.
Hibernate mode
Saves any open documents and running programs or apps to an internal hard drive before removing power from the computer or device.
Function of system software
Serves as the interface between the user, the application software, and the computer's hardware.
Examples of Disk Defragmenter
Smart Defrag, Defragment and Optimize Drives
Open Source Software
Software which can be used, modified and improved by anyone and can be redistributed freely.
Examples of Spyware Remover
Spyware Protection, Spy Sniper
Manage Memory
To optimizes the use of RAM by allocates data & instructions to a memory while they are being processed.
Antivirus program
To protect a computer against viruses by identifying and removing any computer viruses found in memory, on storage media, or on incoming files.
Compression Tools
To shrink size of a file in order to frees up room on the storage media as well as to improve system performance.
Command Line Interface
User uses the keyboard to enter data and instructions.
When we should use a compression tool?
While sending attachment through email, such as pictures and a few files at one time.
Examples of Compression Tools
WinZip, PKZIP, PeaZip
Examples of proprietary Desktop OS
Windows 7, Mac OS X
Examples of File Manager
Windows Explorer, Finder (by Mac OS X)
Examples of proprietary Server OS
Windows Server 2008, OS X Server, UNIX, NetWare
Examples of server operating systems
Windows Server, OS X Server, UNIX and Linux.
Examples of desktop operating systems
Windows, Mac OS, UNIX, Linux
Examples of Disk Cleanup
Wise Disk Cleaner, Disk Cleanup
Example of back-up and restore utility (for iPhone)
iCloud Backup
Examples of proprietary mobile OS
iOS, Windows Mobile, Symbian OS