Week7 software (os, ap)
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Software
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Computer software gives instructions that make computer hardware work. In other words, software is a collection of computer programs and related data that provide the instructions for telling a computer what to do and how to do it.
The four main types of software are operating systems, application programs, utility programs, and programming languages.
Introduction
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Operating Systems
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An operating system is a piece of software that controls how hardware resources such as memory, the central processing unit (CPU), disk space, and other devices are used. All other kinds of software (application, utility, and programming) need the operating system because of hardware resources.
Operating Systems
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Operating Systems
An operating system has two parts, a kernel, and a shell. The kernel is the core of an operating system. It manages memory, files, and other devices; maintains the time and date; starts applications; and manages system resources.
The shell provides direct communication interface between the user and the kernel.
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Operating Systems
There are many different types of operating system. They are classified systems according to the type of user interface, how many users they support (single-user or multi-user), how they perform tasks (single task or multitask), and how they work with other computers (single computer or network).
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Command-line interface
Interface
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Graphical user interface
Interface
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A single-user operating system can be used only by a single user. A multiuser operating system can be used by more than one user. In some ways, a computer that several people share is like a multi-user system. However, a real multi-user system means a machine (and operating system) that several people can access at the same time, through communication facilities or network terminals. Server computers are multi-user systems whereas, PC’s or workstations are single-user systems.
Single or Multi-User
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A network operating system is an operating system specifically designed to support computer networks. A computer network is a set of computers that can communicate with each other and share resources. A network operating system uses a special machine called a server to provide networking support for multiple simultaneous users as well as administrative, security, and management functions. Unlike a single-user operating system, a network operating system must respond to requests from many computers, managing network access and communications, resource use and sharing, data protection, and error control.
Stand Alone or Network
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Single or Multi-Tasking
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MS-DOS Windows 98 Windows XP Windows Vista Windows 7
Operating Systems
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Mac OS Unix Linux Novell NetWare BeOS and Haiku
Operating Systems
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Symbian OS Google Android Mobile Linux BlackBerry OS iOS
Mobile Operating Systems
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OS Statistics – April 2012
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Application Programs
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An application program is a program designed to help with a specific task, such as word processing, accounting, counting the items in a shop or warehouse, or maintaining a database. Application software makes a computer work to suit your needs.
Application Programs
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Word Processor
Microsoft Word, Corel WordPerfect, StarWriter, Windows WordPad, MacWrite, and WordStar
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Spreadsheet
Microsoft Excel, Lotus 1-2-3, StarCalc, and Gnumeric
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Presentation Software
Microsoft PowerPoint, Lotus Freelance Graphics, Adobe Persuasion, OpenOffice.org Impress, Apple’s Keynote, and Corel Presentations
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Database Management Software
dBase, Paradox, Microsoft Access, FoxPro, Oracle, SQL Server, MySQL, InterBase, and Sybase
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CAD/CAM
AutoCAD, ArchiCAD, MathCAD, and Electronic WorkBench
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Painting and Drawing
Windows Paint, Corel Painter, and Adobe Photoshop CS4CorelDRAW and Adobe Illustrator
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Page Layout and Desktop Publishing
Quark XPress, Adobe InDesign, Microsoft Publisher and Adobe Page Maker.
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Animation Programs
Adobe Flash CS5, Microsoft Silver Line, 3D Studio MAX, Animation FX, 3D Maya, and Xara.
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Multimedia Applications
Microsoft Media Player, Microsoft Media Center, Media Player Classic, Real Player, Quicktime Player, WinAmp, WinDVD, and PowerDVD
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Games
Chess Master, Age Of Empires, SimCity, Fifa, Fifa Manager, Crysis Warhead, NFS Shift, and Counter Strike
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Educational Software
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Online Applications
www.docs.google.com, www.acrobat.com, office.live.com, and www.zoho.com
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?Questions