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Lecture 2.6 software

Dec 13, 2014




  • 1. 2.6SOFTWARE

2. 2.6 SOFTWARE2.6.1 System Software2.6.1.1 Operating System2.6.1.2 Utility2.6.2 Application Software 3. 2.6.1 System Software2.6.1.1 Operating SystemAt the end of this lesson, student should be able :- Explain the functions of Operating System Identify types of Operating System 4. 2.6 SoftwareSeries of instructions that tells a computers what tasks to perform and how to perform them.Two types: System Software Application Software 5. 2.6.1 System SoftwareProgram that control or maintain the operations of the computer and its devices.Two types: Operating System Utility Program 6. Operating SystemA set of programs containing instructions that coordinate all the activities among computer hardware devices. 7. FUNCTIONS FUNCTIONOF S OFOPERATINGOPERATINSYSTEMG SYSTEM 8. THE FUNCTIONS OF AN OPERATING SYSTEM start the computer provide a user interface manage programsadministersecurity manage memory control anetworkprovide filemonitor establish an schedule jobsmanagementperformance Internet and configureand other connection devicesutilities 9. 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 10. THE FUNCTIONS OF AN OPERATING SYSTEM 1.Starting the computer The process of starting or restarting a computer iscalled booting. Cold bootTurning oncomputer thathas beenpowered off Warm bootWarm boot from Windows Warm boot from system unitRestartingdesktopcomputer thatis powered on 11. THE FUNCTIONS OF AN OPERATING SYSTEM2. Provide a user interfaceA user interface controls how users enterdata and instructions and how informationis displayed on the screen.2 types of user interface: Command-line Graphical user interface (GUI) 12. THE FUNCTIONS OF AN OPERATING SYSTEM3. Manage programsAn OS manages multiple programs and processes while you use the computer. 13. THE FUNCTIONS OF AN OPERATING SYSTEM4. 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. 14. THE FUNCTIONS OF AN OPERATING SYSTEM 5. Schedule jobs and configure devices OS determines the order in which jobs areprocessed. A job is an operation the processor manages. Jobs include receiving data from input device,processing instructions, sending information tooutput device and transferring items betweenstorage and memory 15. THE FUNCTIONS OF AN OPERATING SYSTEM5. Schedule jobs and configure devices (cont.) OS will configure any new device added to thecomputer so that it can work with the computer. Program that tells operating system how tocommunicate with a specific device is called adevice driver. With Plug and Play, operating systemautomatically configures new devices as youconnect them. 16. THE FUNCTIONS OF AN OPERATING SYSTEM6. Establish an Internet connection OS provides a means to establish Internet connection. New Connection Wizard Web browser E-mail program Built-in firewall 17. THE FUNCTIONS OF AN OPERATING SYSTEM7. Monitor performanceOS typically contains a performancemonitor. A program that assesses and providesinformation about various computerresources and devices such as processor,disk, memory and network usage. 18. 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 19. THE FUNCTIONS OF AN OPERATING SYSTEM 9. Control a network Organizes and coordinates how multipleusers access and share resources on anetwork Resources hardware, software, data, andinformation Example : printer, Internet access, files andprograms. 20. THE FUNCTIONS OF AN OPERATING SYSTEM10. Administer security Establish permissions to resources Define who can access certain resourcesand when they can access those resources By setting user account 21. TYPES OF OPERATING SYSTEMThree categories: Stand-alone Server Embedded 22. 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 23. Windows 7Microsofts 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 24. 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 25. 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. 26. 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 27. SERVER OPERATING SYSTEMDesigned specifically to support a network.Resides on a server.Example: Windows Server 2008 UNIX Linux Solaris NetWare 28. 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. 29. SolarisVersion of UNIX developed by Sun Microsystems.Designed specifically for e-commerce applications.Manages high-traffic accounts and incorporates security necessary for Web transactions. 30. 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. 31. 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 32. 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. 33. 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. 34. 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. 35. 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 36. 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. 37. Utility ProgramAt the end of this lesson, student should be able :- Identify types of Utility programs. Explain the functions of Utility programs. 38. 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. 39. Five Types of Utility Program FileCompression Tools Antivirus Program Spyware Remover Disk Defragmenter Backup and Restore 40. File Compression ToolsFunction :- Reduce the size of a file.Examples :- WinZip PKZIP 41. Antivirus ProgramsFunction :- Protects a computer against viruses.Example : Avira Antivirus Kaspersky Antivirus BitDefender 42. Spyware RemoverFunction :- Detects and deletes spyware, adware and other similar programs.Example : Ad-Aware Spyware Doctor 43. 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 44. 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 45. 2.6.2 Application SoftwareAt the end of this lesson, student should be able to :- Identify the usage of application software. 46. 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 47. Types of application softwareFive types: Word Processing Spreadsheet Software Presentation Software Database Software 48. Word ProcessingA software that allows user to create and manipulate documents containing mostly text and sometimes graphics.Usag

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