Lecture 02 Software Topics Basics System software Office software Versatile application software Multimedia software Windows concepts © 2005 Prentice-Hall, Inc.Slide 1

Basics Categories of Software System software Operating system Utility Development software Application software Office software Specific application software Multimedia software … © 2005 Prentice-Hall, Inc.Slide 1

Basics Sources of Software Commercial software Shareware – author counts on the honor system for payment; copyrighted Freeware – may be used free of charge; copyrighted Public-domain software – may be used without restriction; not copyrighted Open source software - may be used, modified, studied and distributed free of charge; source opened; copyrighted © 2005 Prentice-Hall, Inc.Slide 28

System Software Operating System (OS) – controls the computer Kernel – loaded into memory at start-up and loads other OS components and application program to RAM as they are needed Graphical User Interface (GUI) - Shell © 2005 Prentice-Hall, Inc.Slide 2

System Software OS interfacing with the environment GUI/Shell/Listener – communicating with users Component communication– controlling the communication inside the computer system components Networking – communicating with other computers © 2005 Prentice-Hall, Inc.Slide 3

System Software OS managing resources Process management Multitasking – more than one program running at a time Foreground – program that is active is run here Background – programs of lower priority are run here Storage management File system Mass storage © 2005 Prentice-Hall, Inc.Slide 3

System Software OS managing resources (cont.) I/O devices OS monitoring system Security Authorization Privacy System failure © 2005 Prentice-Hall, Inc.Slide 3

System Software Example OSs OS on Wintel Platform PC Windows OS - older versions Windows 95/98 Windows ME Windows OS - modern versions Windows XP – plug and play Windows 2005 Server Windows CE.NET - handheld © 2005 Prentice-Hall, Inc.Slide 5

System Software OS on other Platform PCs Mac OS X on Mac//PowerPC Platform Unix – multiuser operating system Linux – open source version of Unix Open source – source code is available LindowsOS – Linux based, Windows compatible © 2005 Prentice-Hall, Inc.Slide 6

System Software Business Concerns with choosing an OS Interoperability – ability to share resources across platforms, i.e., in a multiplatform environment Source code availability – ability to modify the source code of an OS to fit own requirement and facilitate maintenance © 2005 Prentice-Hall, Inc.Slide 7

System Software Graphical User Interface vs. text-based, command-driven interface Pointing device such as a mouse Icon – picture that represents a file or a computer task © 2005 Prentice-Hall, Inc.Slide 4

System Software Utility Programs Disk and file maintenance System recovery Security Backup Virus protection Intrusion detection Examples Norton Disk Doctor/ System unit temperature monitor/ Norton Anti-virus/ Screen Savers/ Internet privacy protection/ Snort/ eXpertBSM © 2005 Prentice-Hall, Inc.Slide 8

System Software Development software Compiler/ Assembler System development tools IDE (integrated Development environment) Examples JAVA SDK JBuilder Frontpage © 2005 Prentice-Hall, Inc.Slide 8

Office Software Sun OpenOffice/ Microsoft Office A suite of applications Word processing Presentation software Spreadsheet software Database software Personal information management (PIM) Productivity software Provide Template – pre-formatted document; user simply provides content © 2005 Prentice-Hall, Inc.Slide 21

Office Software Word processing Spell checker Online thesaurus Grammar and style checker © 2005 Prentice-Hall, Inc.Slide 22

Office Software Presentation software Text Photos/images Charts and graphs Original drawings © 2005 Prentice-Hall, Inc.Slide 23

Office Software Presentation software (cont.) Clip art Audio clips Full-motion video Online thesaurus Grammar and style checker © 2005 Prentice-Hall, Inc.Slide 24

Office Software Spreadsheet software Rows and columns Cell – intersection of a row and a column Cell address – column and row the cell appears in © 2005 Prentice-Hall, Inc.Slide 25

Office Software Database software Create and maintain a database Extract information Make inquiries Sort records Generate reports © 2005 Prentice-Hall, Inc.Slide 26

Office Software Personal Information Management (PIM) software Communication Messages Contacts Calendar - appointments Tasks © 2005 Prentice-Hall, Inc.Slide 27

Versatile Application Software Home and family software Legal advisor (Family Lawyer) Health advisor (Medical advisor) Tax advisor Financial advisor (Financial Planning) Hobbies (Gardener/ Astronomer/ Fishing/ …) © 2005 Prentice-Hall, Inc.Slide 29

Versatile Application Software Education and edutainment software Dynamic, linked, interactive vs. static, sequential materials Chemical reaction/ Anatomy / Guitar tutoring/ Language tutoring Reference software GPS (Geographical Positioning System) Fortune 500 financial information Multilingual dictionaries College entrance information © 2005 Prentice-Hall, Inc.Slide 29

Versatile Application Software Business software Dentistry management software Architecture design Interior design Construction management Various applications development software © 2005 Prentice-Hall, Inc.Slide 29

Multimedia Software Multimedia – Involve text, still graphics, motion visuals, animation, and audios in software © 2005 Prentice-Hall, Inc.Slide 30

Multimedia Software Digital camera Video camera, VCR, audio cassette player, CD player, television CD-RW or DVD+RW Audio synthesizer Video capture card Color scanner © 2005 Prentice-Hall, Inc.Slide 35

Multimedia Software Graphics software – allows the user to create pictures on a computer Bit-mapped (raster )image – picture is made up of pixels, which are picture elements (dots) Vector graphic – image is composed of geometric shapes such as lines and points Metafile format – combines bit-mapped and vector graphics © 2005 Prentice-Hall, Inc.Slide 31

Multimedia Software Bit-mapped graphics file formats Jpg/ jpeg – web pages and digital photography bmp – Microsoft Windows gif – web pages and downloadable images, patented Tiff/ tif – used in print publishing pcx – PC Paintbrush png – replacement for GIF; unpatented © 2005 Prentice-Hall, Inc.Slide 32

Multimedia Software Paint software – creation of bi- mapped images Draw software – creation of vector images Photo illustration software – creation and editing of existing digitized images Morphing – changing one image to another © 2005 Prentice-Hall, Inc.Slide 33

Multimedia Software Drag-and-drop software users choose from pre-created shapes Image files User created Clip art Scanned images Photo images © 2005 Prentice-Hall, Inc.Slide 34

Multimedia Software Audio software Wave files – store waveform Nonwave files – store directions to musical devices to produce sound Waveform audio file formats wav mp3 ra Nonwaveform audio file formats MIDI © 2005 Prentice-Hall, Inc.Slide 36

Multimedia Software Animation software Flash Motion video files Avi/ mov/ mpeg/ rm Video editing software Director © 2005 Prentice-Hall, Inc.Slide 37

Multimedia Software Creating a multimedia application Presentation software Authoring software Used for creating multimedia applications Multimedia programming May require high-end multimedia programs May require programming skills © 2005 Prentice-Hall, Inc.Slide 38

Windows Concepts Window – rectangular area on the screen Desktop – where Windows icons are displayed An application window contains an open application Active window © 2005 Prentice-Hall, Inc.Slide 9

Windows Concepts Workspace The area in a window in which documents, graphs, etc., are created Document window A rectangular area within the workspace that contains a document Cascading windows Tiled windows © 2005 Prentice-Hall, Inc.Slide 10

Windows Concepts Menus – lists of user choices Pull-down menus Shortcut keys Toolbars – contain buttons for frequently used commands Dialog box – allows the user to provide information to the software © 2005 Prentice-Hall, Inc.Slide 11

Windows Concepts Sharing Information Clipboard – area where information is stored, can then be shared with other applications © 2005 Prentice-Hall, Inc.Slide 12

Windows Concepts File –information saved in an electronic format File types: ASCII – text only Document – word processor file Spreadsheet © 2005 Prentice-Hall, Inc.Slide 13

Windows Concepts File types: Web page Source program – user-created instructions to the computer Executable – machine language version Graphics Audio Video © 2005 Prentice-Hall, Inc.Slide 14

Windows Concepts A file’s optional 3 character extension indicates the type of file Native file format – default data type for a particular program © 2005 Prentice-Hall, Inc.Slide 15

Windows Concepts What can be done to a file? Create, name, save Copy, move, delete Retrieve, update Display, print, play Execute Download/upload © 2005 Prentice-Hall, Inc.Slide 16

Windows Concepts What can be done to a file? (cont.) Import – open a file with a program that was NOT used to create the file Compress – reduce the size of a file so it can be uploaded more quickly Zip file – the reduced file. It must be unzipped before it can be used. © 2005 Prentice-Hall, Inc.Slide 17

Windows Concepts Windows Explorer – file management tool Folders – used to organize a storage device such as a hard disk or diskette Path – indicates what folder a file is stored in © 2005 Prentice-Hall, Inc.Slide 18

Windows Concepts File Management Activities Save/Save As Open Copy Cut Delete Rename © 2005 Prentice-Hall, Inc.Slide 19

Windows Concepts Help for Windows – online Help for application software – click on the Help option or menu Context-sensitive help – hit F1 to get help concerning whatever you are doing © 2005 Prentice-Hall, Inc.Slide 20