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