2.6 SOFTWARE2.6.1 System Software 188.8.131.52 Operating System 184.108.40.206 Utility2.6.2 Application Software
2.6.1 System Software 220.127.116.11 Operating SystemAt the end of this lesson, student should be able :- • Explain the functions of Operating System • Identify types of Operating System
2.6 SoftwareSeries of instructions that tells a computers what tasks to perform and how to perform them.Two types: System Software Application Software
2.6.1 System SoftwareProgram that control or maintain the operations of the computer and its devices.Two types: Operating System Utility Program
18.104.22.168 Operating SystemA set of programs containing instructions that coordinate all the activities among computer hardware devices.
FUNCTIONS FUNCTIONOF S OFOPERATING OPERATINSYSTEM G SYSTEM
THE FUNCTIONS OF AN OPERATING SYSTEM start the computer provide a user interface manage programsadminister security manage memory control a network provide file monitor establish an schedule jobs management performance Internet and configure and other connection devices utilities
THE FUNCTIONS OFOPERATING SYSTEM1. Starting the computer2. Provide a user interface3. Manage programs4. Manage memory5. Schedule jobs and configure devices6. Establish an Internet connection7. Monitor performance8. Provide file management and other utilities9. Control a network10. Administer security
THE FUNCTIONS OF AN OPERATING SYSTEM 1.Starting the computer The process of starting or restarting a computer is called booting. Cold boot Turning on computer that has been powered off Warm boot Warm boot from Windows Warm boot from system unit Restarting desktop computer that is powered on
THE FUNCTIONS OF AN OPERATING SYSTEM 2. Provide a user interface A user interface controls how users enter data and instructions and how information is displayed on the screen. 2 types of user interface: Command-line Graphical user interface (GUI)
THE FUNCTIONS OF AN OPERATING SYSTEM 3. Manage programs An OS manages multiple programs and processes while you use the computer.
THE FUNCTIONS OF AN OPERATING SYSTEM 4. Manage memory Purpose - to optimize the use of RAM OS allocates data & instructions to memory while being processed, monitors the contents of memory, and release from memory when the processor no longer requires them.
THE FUNCTIONS OF AN OPERATING SYSTEM 5. Schedule jobs and configure devices OS determines the order in which jobs are processed. A job is an operation the processor manages. Jobs include receiving data from input device, processing instructions, sending information to output device and transferring items between storage and memory
THE FUNCTIONS OF AN OPERATING SYSTEM 5. Schedule jobs and configure devices (cont.) OS will configure any new device added to the computer so that it can work with the computer. Program that tells operating system how to communicate with a specific device is called a device driver. With Plug and Play, operating system automatically configures new devices as you connect them.
THE FUNCTIONS OF AN OPERATING SYSTEM 6. Establish an Internet connection OS provides a means to establish Internet connection. New Connection Wizard Web browser E-mail program Built-in firewall
THE FUNCTIONS OF AN OPERATING SYSTEM 7. Monitor performance OS typically contains a performance monitor. A program that assesses and provides information about various computer resources and devices such as processor, disk, memory and network usage.
THE FUNCTIONS OF AN OPERATING SYSTEM 8. Provide file management and other utilities Utility programs which included in most OS provide the following functions : managing files viewing images securing a computer from unauthorized access Uninstalling programs Scanning disks Defragmenting disks Diagnosing problems Backing up files and disks Setting up screen savers
THE FUNCTIONS OF AN OPERATING SYSTEM 9. Control a network Organizes and coordinates how multiple users access and share resources on a network Resources – hardware, software, data, and information Example : printer, Internet access, files and programs.
THE FUNCTIONS OF AN OPERATING SYSTEM 10. Administer security Establish permissions to resources Define who can access certain resources and when they can access those resources By setting user account
TYPES OF OPERATING SYSTEMThree categories: Stand-alone Server Embedded
STAND-ALONE OPERATING SYSTEMA complete operating system that works on a desktop computer, notebook computer, or mobile computing device.Example: Windows 7 Mac OS X UNIX Linux
Windows 7Microsoft’s fastest, most efficient operating system to date.Features : Quicker programs start up Built – in diagnostics Automatic recovery Improved security Enhanced searching and organizing capabilities Easy-to-use interface
Mac OS XMultitasking operating system available only for computers manufactured by Apple.Features:- Large photo-quality icons Built-in networking support Enhanced speech recognition Optical disk burning Enhanced multimedia capabilities
UNIXMultitasking operating System developed in the early 1970s at Bell Laboratories.Unix was implemented on many different types of computers.A version of UNIX is available for most categories of computers.Most version offer a graphical user interface.Both a stand-alone and server operating system.
LinuxPopular, multitasking UNIX-type operating system.Open-source software – source code is provided for use, modification, and redistributionBoth a stand-alone and a server operating system.Some versions are command-line, others are GUI
SERVER OPERATING SYSTEMDesigned specifically to support a network.Resides on a server.Example: Windows Server 2008 UNIX Linux Solaris NetWare
Windows Server 2008An upgrade to windows Server 2003.Features:- Improved Web server management Enhanced server security Protection against malicious software attaches Share many technologies with windows.
SolarisVersion of UNIX developed by Sun Microsystems.Designed specifically for e-commerce applications.Manages high-traffic accounts and incorporates security necessary for Web transactions.
NetWareDeveloped by Novell, Inc.Designed for client/server networks.A server portion resides on the network server, client portion resides on client computer.Supports open source software and runs on all types of computers from mainframes to personal computers.
EMBEDDED OPERATING SYSTEMOperating system on mobile devices and many consumer electronics.Resides on a ROM chip.Examples: Windows embedded CE Windows Mobile Palm OS BlackBerry Symbian OS
Windows Embedded CEA scaled-down Windows operating system designed for use on communications, entertainment, and computing devices with limited functionality.GUI that supports colors, sound, multitasking, multimedia, e-mail, Internet access, and Web browsing.Used in devices such as digital cameras, point-of, sale terminals and automated teller machine.
Windows MobileBased on Windows Embedded CEDesigned for specific types of smart phones and PDAs.Allows user to have access to personal information manager such as contact lists, schedules, tasks, calenders and notes.
Palm OSA competing operating system to Windows Mobile.Designed for smart phones and PDAs.Users manage schedules and contacts, telephone message, project notes, reminders, task and address lists, and important dates and appointments.Latest version allows biometric identification and use of smartcards.
BlackBerryRuns handheld devices supplied by RIM (Research in motion).Provides personal information manages such as managing schedules, contacts and appointments, and phone capabilities.Allows wireless functionality
Symbian OSOpen source multitasking OS designed for smart phones.Allows users to maintain contact list, save appointments browser the web, send/receive text and picture message, email message and faxes.
22.214.171.124 Utility ProgramAt the end of this lesson, student should be able :- • Identify types of Utility programs. • Explain the functions of Utility programs.
126.96.36.199 Utility ProgramSoftware that allows user to perform maintenance- type tasks, related to managing a computer, its devices or its programs.Most OS include several utility programs for managing disk drives, printers and other devices.
Five Types of Utility Program FileCompression Tools Antivirus Program Spyware Remover Disk Defragmenter Backup and Restore
File Compression ToolsFunction :- Reduce the size of a file.Examples :- WinZip PKZIP
Antivirus ProgramsFunction :- Protects a computer against viruses.Example : Avira Antivirus Kaspersky Antivirus BitDefender
Spyware RemoverFunction :- Detects and deletes spyware, adware and other similar programs.Example : Ad-Aware Spyware Doctor
Disk DefragmenterFunction :- Reorganizes files and unused space on a hard disk so that Operating system access data menu quickly and program run faster.Examples:- Contig Defraggler MyDefrag
Backup and RestoreFunction :- Backup – allows users to copy selected files or an entire hard disk to another storage medium. Restore – reverses the backup process and returns backed up files to their original form.Examples:- AMANDA BackupPC Bacula
2.6.2 Application SoftwareAt the end of this lesson, student should be able to :-• Identify the usage of application software.
2.6.2 Application SoftwareIs software designed to help the user to perform related specific tasks such as :- To create brochures To create personal profile To create a presentation To create a student database
Types of application softwareFive types: Word Processing Spreadsheet Software Presentation Software Database Software
Word ProcessingA software that allows user to create and manipulate documents containing mostly text and sometimes graphics.Usage to create brochures, report, newletter, journal, letter.Examples:- Microsoft Word Writer
Spreadsheet SoftwareA software that allows user to organize data in rows and columns and to perform calculations on the data.Usage to create personal profiles, budget summaries, income statements or calculate students marks.Examples :- Microsoft Excel Calc
Presentation SoftwareA software that allows user to create visual aids for presentations to communicate ideas, massages, and other information to a group.Usage to create a presentation for teaching, marketing or tourist information.Examples :- Microsoft Power Point Impress
Database SoftwareA software that allows user to create access and manage a database.Database – Collection of data organized in a manner that allows access, retrieval and use of that data.Usage to create student database, employees database or book database.Examples : Microsoft Access Base
Summary of SoftwareSystem Software Application Software Operating System Word Processing Stand Alone Operating System Spreadsheet Software Network Operating System Presentation Software Embedded Operating System Database Software Utility Programs Compression Tools Antivirus Program Spyware Remover Disk Defragmenter Backup and Restore
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