Chapter 1Introduction toComputers
Chapter 1 Objectives     Explain the importance of       Explain the purpose of a        computer literacy                ...
The Digital Revolution          Where can you find computers?  Nextp. 1.2 Fig. 1-1                          Computers are...
The Digital Revolution         What is computer literacy?            If you are computer literate, you have             k...
What Is a Computer?         What is a computer?            An electronic machine,             operating under the        ...
What is a Computer?        What are data and information?                       Data                  Collection of raw   ...
What is a Computer?         Who is a user?          Someone that           communicates           with a computer        ...
What is a Computer?         What are hardware and software?                  Hardware                 The electric,       ...
What is a Computer?                                               Process  What is the            Input              Manip...
The Components of a                                          Computer  What are common computer hardware components?      ...
The Components of a                                   Computer          What is an input device?                 Any hard...
The Components of a                                      Computer        What is an output device?           Any hardware...
The Components of a                                    Computer     What is the system unit ?           Sometimes called ...
The Components of a                                     Computer  What are two main components on the  motherboard?       ...
The Components of a                                         Computer        What is a chip?                 An electronic...
The Components of a                              Computer    What are internal components and external    devices?        ...
The Components of a                                        Computer         What is storage?            Holds data, instr...
The Components of a                                Computer    What are common storage devices or drives?                 ...
The Components of a                                            Computer        What is a floppy disk?                 A t...
The Components of a                                     Computer    What is a hard disk?            Consists of several  ...
The Components of a                                            Computer       What is a compact disc?                 A f...
The Components of a                                    Computer                  What is miniature storage media?         ...
The Components of a                                        Computer        What is a communications device?              ...
Why Is a Computer So                                      Powerful?         What characteristics make a computer powerful?...
Why Is a Computer So                             Powerful?        What is a network?     Two or more      computers      ...
Technology Trailblazer         Bill Gates               Microsoft’s chairman                and chief software           ...
Computer Software          What is a computer program?             A series of instructions that tells the              h...
Computer Software         What is software installation?               Some programs can be                loaded directl...
Computer Software    What happens when you run a program from a CD-    ROM?                              Step 1           ...
Computer Software          What is system software?             Programs that control the operations of the              ...
Computer Software          What is the user interface?             Determines how you              interact with software...
Computer Software       What is a graphical user interface (GUI)?            Allows you to interact with the software    ...
Computer Software          What is application software?              Programs that perform specific tasks for users     ...
Computer Software What is packaged software?      Copyrighted       retail software       that meets the       needs of a...
Computer Software          What is custom software?           Written by a            programmer           Tailor-made  ...
Computer Software      What are freeware, public-domain software, and      shareware?            Shareware                ...
Computer Software      What is an application service provider (ASP)?                       Third-party company that      ...
Computer Software          Who designs and writes software?          Computer programmer (or           programmer)       ...
Computer Software       How are programs written?               Programmers use a programming language                to ...
Networks and the                                  Internet      What is a network?         Collection of computers and de...
Networks and the Internet      What are the reasons to network?          Hardware                         To share        ...
Networks and the                               Internet        What is a local area network (LAN)?            A network t...
Networks and the Internet         What is a wide area network (WAN)?                   A network that covers a large geog...
Networks and the Internet       What is the Internet?             A worldwide              collection of              net...
Networks and the Internet        Why do users access the Internet?           E-mail           Information              ...
Networks and the Internet      How do users connect to the Internet?              Internet Service               Provider ...
Networks and the                                   Internet          What is the World Wide Web (WWW)?             Billio...
Networks and the Internet  How do you connect                    Step 1  to the Internet and  display a Web page?      Ste...
Categories of Computers        What are the categories of computers? Nextp. 1.19 Fig. 1-20
Personal Computers          What is a personal computer?         A computer that can perform all of its input, processing...
Personal Computers      What are the two most popular series of      personal computers?                                  ...
Company on the Cutting                                         Edge                                         Gateway       ...
Personal Computers       What is a desktop computer?               Designed so the                system unit, input     ...
Personal Computers        What are some desktop        computer variations?               Tower model                • Ta...
Personal Computers       What are some desktop       computer variations?         All-in-one computer        • Less expen...
Personal Computers      What are some desktop      computer variations?         Workstation           • More expensive an...
Personal Computers What are some desktop computer variations?           Server             • Powerful desktop that       ...
Personal Computers       What is a notebook computer?         Also called a laptop         Portable, personal          c...
Handheld Computers         What is a handheld computer?             Also called a             palmtop computer           ...
Handheld Computers     How do you input data with a     handheld computer?         Some have small          keyboards    ...
Handheld Computers    What is a personal digital assistant (PDA)?         One of the most          popular handheld      ...
Handheld Computers  What are Web-enabled handheld computers?               Allow you to access the Internet wirelessly   ...
Internet Appliances        What is an Internet appliance or information        appliance?               Computer with    ...
Internet Appliances         What is WebTV?            An Internet             appliance in the             form of a set-...
Mid-Range Servers        What is a mid-range        server?               More powerful and                larger than a ...
Mid-Range Servers          What is a terminal?                                     Sometimes called                       ...
Mainframes    What is a mainframe?         Large, expensive,          very powerful          computer         Can handle...
Company on the Cutting                                        Edge                    International Business             ...
Supercomputers        What is a supercomputer?             Fastest, most powerful computer             Able to          ...
Elements of an                                         Information System        What is an information                   ...
Examples of Computer Usage     What are five categories of computer users?                                           Mobil...
Examples of Computer Usage     What software is available for a home user?                                     finance and...
Examples of Computer Usage         How do computer companies         accommodate children?               Many            ...
Examples of Computer Usage          What is the digital divide?             Idea that you can separate              peopl...
Technology Trailblazer      Shawn Fanning         As a 19-year-old          freshman          computer science          m...
Examples of Computer Usage       What hardware and software is         Web access       available for a small office/home ...
Examples of Computer Usage          What new computer trends concern a          small office/home office (SOHO) user?     ...
Examples of Computer Usage       What is a mobile user?         Travel to and from a          main office to conduct     ...
Examples of Computer Usage     What are the needs of the     large business user?                   Network              ...
Examples of Computer Usage         What is a kiosk?             A freestanding computer             Usually has multimed...
Examples of Computer Usage         What is telecommuting?               A work                arrangement in             ...
Examples of Computer Usage   What are the needs of a power user?            Requires the capabilities of a workstation or...
Computer User as a Web                                    Publisher    What is Web publishing?         Making a Web page ...
Computer User as a Web                               Publisher       What are other ways to use the Web?        Photo com...
Summary of Introduction                     to Computers        The digital revolution        What is a computer?       ...
Summary of Introduction                     to Computers (cont.)        Handheld computers        Internet appliances   ...
Chapter 1 Complete
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MELJUN CORTES Computer Foundation

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MELJUN CORTES Computer Foundation

  1. 1. Chapter 1Introduction toComputers
  2. 2. Chapter 1 Objectives Explain the importance of Explain the purpose of a computer literacy network Discuss the uses of the Internet Define the term computer and the World Wide Web Identify the components of a Describe the categories of computer computers and their uses Explain why a computer is a Identify the various types of powerful tool computer usersDifferentiate among the various Understand how a user can be a categories of software Web publisherp. 1.2
  3. 3. The Digital Revolution Where can you find computers? Nextp. 1.2 Fig. 1-1  Computers are everywhere
  4. 4. The Digital Revolution What is computer literacy?  If you are computer literate, you have knowledge and understanding of computers and their uses Nextp. 1.4
  5. 5. What Is a Computer? What is a computer?  An electronic machine, operating under the control of instructions stored in its own memory • accepts data • manipulates the data according to specified rules • produces results • stores the results for future use Nextp. 1.4
  6. 6. What is a Computer? What are data and information? Data Collection of raw unprocessed facts, figures, and symbols Information Data that is organized, Nextp. 1.4 Fig. 1-2 meaningful, and useful
  7. 7. What is a Computer? Who is a user?  Someone that communicates with a computer  Someone who uses the information it generates Nextp. 1.4
  8. 8. What is a Computer? What are hardware and software? Hardware The electric, electronic, and Software mechanical equipment The series of that makes up a instructions that computer tells the hardware how to perform tasks Nextp. 1.4
  9. 9. What is a Computer? Process What is the Input Manipulate the information Any data or instructions you input (data) to produce output processing enter into a (information) computer cycle? Output Communication Data that has The capability of been processed communicating Storage into information with other Area in a computers computer that can hold data Next and informationp. 1.5 for future use
  10. 10. The Components of a Computer What are common computer hardware components? PC camera system unit speakerprinter speaker monitor keyboard modemscanner mouse Nextp. 1.5 Fig. 1-3 microphone digital camera
  11. 11. The Components of a Computer What is an input device?  Any hardware component that allows a user to enter data and instructions into a computer microphone PC camera keyboard mouse scannerClick to viewWeb Linkthen clickInput Devices Next digitalp. 1.5 Fig. 1-3 camera
  12. 12. The Components of a Computer What is an output device?  Any hardware component that can convey information to a user monitor speakers printerClick to view Web Linkthen click Output Devices Nextp. 1.6 Fig. 1-3
  13. 13. The Components of a Computer What is the system unit ?  Sometimes called a CD-RW CD-ROM chassis drive or DVD-  A box-like case made ROM Zip® from metal or plastic drive disk that protects the drive floppy internal electronic disk hard components of the disk drive computer from damage drive  Circuitry in the system unit usually is part of or is connected to a circuit board called the Next motherboardp. 1.6 Fig. 1-3
  14. 14. The Components of a Computer What are two main components on the motherboard? Central Processing Unit (CPU) • Also called a processor • Electronic device that interprets and carries out the basic instructions that operate the computerClick to view Web Link Memorythen click Processors Next • Temporary holding place for datap. 1.6 and instructions
  15. 15. The Components of a Computer What is a chip?  An electronic device that contains many microscopic pathways that carry electrical currents  Usually no bigger than memory one-half inch chip square  Packaged so it processor chip can be packaging attached to a motherboard Nextp. 1.6 Fig. 1-4
  16. 16. The Components of a Computer What are internal components and external devices? Internal Component External Device Resides inside the Also called a system unit peripheral Attaches to the system unit Nextp. 1.6
  17. 17. The Components of a Computer What is storage?  Holds data, instructions, and information for future use Storage Device Storage Medium • Records and retrieves items to • Physical material and from a storage on which a medium computer keepsClick to view the data, • Devices oftenWeb Link function as source ofthen click instructions andStorage Devices input because they Next informationp. 1.7 transfer items from storage into memory
  18. 18. The Components of a Computer What are common storage devices or drives? CD-ROM or DVD-ROM CD-RW drive drive hard disk ZIP® drive drive floppy disk drive Nextp. 1.7 Fig. 1-3
  19. 19. The Components of a Computer What is a floppy disk?  A thin, circular, flexible disk enclosed in a plastic shell  Insert and remove a floppy disk into and from a floppy disk drive  A Zip® disk is a higher capacity disk Nextp. 1.7 Fig. 1-5
  20. 20. The Components of a Computer What is a hard disk?  Consists of several self-contained hard disk circular platters that store items electronically  Disks are enclosed in an airtight, sealed case, which often is housed inside the system unit  Provides much greater storage capacity than a floppy disk  Some hard disks are removable Nextp. 1.7 Fig. 1-6 & 7 removable hard disk
  21. 21. The Components of a Computer What is a compact disc?  A flat, round portable medium that stores data using microscopic pits, which are created by a laser light • CD-ROM • CD-RW – rewriteable CD • DVD-ROM – tremendous storage capacities Nextp. 1.8 Fig. 1-8
  22. 22. The Components of a Computer What is miniature storage media?  Used in devices such as digital cameras  One popular type is called a card miniature storage media Nextp. 1.8 Fig. 1-9
  23. 23. The Components of a Computer What is a communications device?  Enables computer users to communicate and to exchange items such as data, instructions, and information with another computer  Allows you to establish a connection between two computers and transmit items over transmission media, such as cables, telephone lines, or satellites  One type is a modemClick to view Web Linkthen click CommunicationsDevices Nextp. 1.8 Fig. 1-3 modem
  24. 24. Why Is a Computer So Powerful? What characteristics make a computer powerful? Storage Speed Reliability Enormous amounts of Billions of data can be stored and Dependable because operations can components have a be carried out made available for low failure rate so in a single processing anytime it is second needed they produce consistent results Accuracy Communications If data is entered correctly and program works properly, Two connected the results are error-free — computers can share garbage in, garbage out stored data, instructions, Next (GIGO) accuracy of output and informationp. 1.8 depends on accuracy of input
  25. 25. Why Is a Computer So Powerful? What is a network?  Two or more computers connected together via communications media and devices  The most widely known network is the Internet Nextp. 1.10 Fig. 1-10
  26. 26. Technology Trailblazer Bill Gates  Microsoft’s chairman and chief software architect  Co-founded Microsoft in 1975  Regarded as the most powerful person in the computer industry  Consistently anticipates technologicalClick to viewWeb Link developments andthen clickBill Gates customer needs Nextp. 1.9
  27. 27. Computer Software What is a computer program?  A series of instructions that tells the hardware of a computer what to do Allows you Uses data in Displays Compares to input data memory in information values stored and stores it calculations on monitor in memory in memory DirectsClick to view Web Link computer to Prints a Storesthen click Computer Programs perform report information Nextp. 1.10 alternative on disk operations
  28. 28. Computer Software What is software installation?  Some programs can be loaded directly from purchased media, others must be installed  Install means part or all of the instructions are copied from the purchased media onto the computers hard disk before the program can be used Nextp. 1.11 Fig. 1-11
  29. 29. Computer Software What happens when you run a program from a CD- ROM? Step 1 Step 2 Step 1: Insert the CD-ROM that Step 2: If the contains program into the necessary, install CD-ROM drive. the program on Step 3: The the hard disk. program Then instruct the executes and the computer to run screen displays the program. graphics that Instructions allow you to transfer from the create a greeting CD-ROM or hard card. disk to memory. Nextp. 1.11 Fig. 1-12 Step 3
  30. 30. Computer Software What is system software?  Programs that control the operations of the computer and its devices Operating System (OS) Utility program Set of programs Type of system containing instructions software that performs that coordinate all the a specific task, usually activities among related to managing a computer hardware computer, its devices, Nextp. 1.12 devices or its programs
  31. 31. Computer Software What is the user interface?  Determines how you interact with software  Used to control how you enter data and instructions  Used to control how information displays on the screen Nextp. 1.12
  32. 32. Computer Software What is a graphical user interface (GUI)?  Allows you to interact with the software using visual images such as icons  An icon is a icons small image that represents a program, an instruction, or icons some other object Nextp. 1.12 Fig. 1-13
  33. 33. Computer Software What is application software?  Programs that perform specific tasks for users Suite Collection of popular individual software Word applications bundled processing together as a single unit Presentation software graphics softwareClick to viewWeb Link Spreadsheet Databasethen click software softwareApplication Software Nextp. 1.13
  34. 34. Computer Software What is packaged software?  Copyrighted retail software that meets the needs of a wide variety of users  Purchase from stores or companies on the Internet Nextp. 1.13 Fig. 1-14
  35. 35. Computer Software What is custom software?  Written by a programmer  Tailor-made program developed at a user’s request to perform specific functions Nextp. 1.14
  36. 36. Computer Software What are freeware, public-domain software, and shareware? Shareware • Copyrighted software that is distributed free for a trial period • Send a payment to developer on honor Freeware system • Software provided at Public-Domain no cost to a user by Software an individual or • Freeware donated company for public use • Copyrighted • No copyright Nextp. 1.14 • Cannot resell it on restrictions your own
  37. 37. Computer Software What is an application service provider (ASP)? Third-party company that manages and distributes software and services on the Internet You can run the Both free and programs from the paid ASPs Internet Nextp. 1.14
  38. 38. Computer Software Who designs and writes software?  Computer programmer (or programmer) • Writes software programs  Systems Analyst • Designs a program, working with both the user and the programmer to determine the desired output of the program Nextp. 1.14
  39. 39. Computer Software How are programs written?  Programmers use a programming language to write computer programs Nextp. 1.14 Fig. 1-15
  40. 40. Networks and the Internet What is a network?  Collection of computers and devices connected together via communications devices and media  When your computer connects to a network you are online Communications Device Communications Media • Modem • Cables • Telephone lines Next • Cellular radiop. 1.16 • Satellites
  41. 41. Networks and the Internet What are the reasons to network? Hardware To share To save devices resources time and money Software programs Information Data Nextp. 1.16
  42. 42. Networks and the Internet What is a local area network (LAN)?  A network that connects computers in a limited geographic area such as a school computer laboratory, office or group Next of buildingsp. 1.16 Fig. 1-16
  43. 43. Networks and the Internet What is a wide area network (WAN)?  A network that covers a large geographical area, such as one that connects offices across the country Nextp. 1.16 Fig. 1-17Next
  44. 44. Networks and the Internet What is the Internet?  A worldwide collection of networks that links together millions of businesses, government agencies, educational institutions, and individualsClick to view Web Linkthen click Internet Nextp. 1.17
  45. 45. Networks and the Internet Why do users access the Internet? E-mail Information  E-mail  Meeting Shopping people Meeting people  Information Entertainment  Shopping Next  Entertainmentp. 1.17 Fig. 1-18
  46. 46. Networks and the Internet How do users connect to the Internet? Internet Service Provider (ISP) Online Service Company that Provider (OSP) supplies connections to the Provides access to Internet, usually the Internet, as for a monthly fee well as a variety of other specialized content and services Nextp. 1.18
  47. 47. Networks and the Internet What is the World Wide Web (WWW)?  Billions of documents, called Web pages, that are linked together on computers throughout the world Web browser Web site Program used to Collection of Web page access and view related Web Web pages pages Contains text, graphics, sound, or video and has Next connections to otherp. 1.18 Web pages
  48. 48. Networks and the Internet How do you connect Step 1 to the Internet and display a Web page? Step 1 : Use your computer Step 2 : A Web to make a local Step 4 : The browser such telephone call Web browser Step 3 : Enter Step 2 as Internet to an online locates the of the address Explorer service site WebWeb for the site a Web displays the entered you wishyour page on to visit address and screen displays a Web page on your screen Step 4 Next Step 3p. 1.18 Fig. 1-19
  49. 49. Categories of Computers What are the categories of computers? Nextp. 1.19 Fig. 1-20
  50. 50. Personal Computers What is a personal computer?  A computer that can perform all of its input, processing, output, and storage activities by itself Contains at least Microprocessor Two major • One Input The single chip categories device that performs • Desktop • One output all the device processing • Notebook functions on a • One storage personal device computer Next • Memoryp. 1.19 • A processor
  51. 51. Personal Computers What are the two most popular series of personal computers? The Apple Macintosh uses the Macintosh operating system (Mac OS) Nextp. 1.19 Fig. 1-21 & 22p. 1.19 Fig. 1-21 & 22 The PC and compatibles use the Windows operating system
  52. 52. Company on the Cutting Edge Gateway  One of the world’s leading technology manufacturers  Manufactures built-to-order PCsClick to viewWeb Linkthen click  Consumers from aroundGateway the world order more Nextp. 1.21 than 11,000 custom systems daily
  53. 53. Personal Computers What is a desktop computer?  Designed so the system unit, input devices, output devices, and any other devices fit entirely on or under a desk or tableClick to view Web Linkthen click Personal Computers Nextp. 1.20 Fig. 1-23
  54. 54. Personal Computers What are some desktop computer variations?  Tower model • Tall and narrow system unit that can sit on the floor vertically Nextp. 1.20 Fig. 1-23
  55. 55. Personal Computers What are some desktop computer variations?  All-in-one computer • Less expensive desktop that combines the monitor and system unit into a single device Nextp. 1.21 Fig. 1-24
  56. 56. Personal Computers What are some desktop computer variations?  Workstation • More expensive and powerful desktop designed for work that requires intense calculations and graphics capabilities  Stand-alone • Can perform the information processing cycle operations without being connected to a network Nextp. 1.21
  57. 57. Personal Computers What are some desktop computer variations?  Server • Powerful desktop that manages the resources on a network  Clients or workstations • Other computers on network that access the contents of the storage area on the Next serversp. 1.22 Fig. 1-25
  58. 58. Personal Computers What is a notebook computer?  Also called a laptop  Portable, personal computer small enough to fit on your lap  Generally more expensive than a desktop computer with equal capabilitiesClick to view video Nextp. 1.22 Fig. 1-26
  59. 59. Handheld Computers What is a handheld computer?  Also called a palmtop computer  Small computer that fits in your handClick to view Web Linkthen click Handheld Computers Nextp. 1.23 Fig. 1-27
  60. 60. Handheld Computers How do you input data with a handheld computer?  Some have small keyboards  Others use a stylus •  Some support voice Next inputp. 1.23
  61. 61. Handheld Computers What is a personal digital assistant (PDA)?  One of the most popular handheld computers in use today  Provides personal organizer functions • Calendar • Appointment book • Address book • Calculator Next • Notepadp. 1.23 Fig. 1-28
  62. 62. Handheld Computers What are Web-enabled handheld computers?  Allow you to access the Internet wirelessly Web-enabled Web-enabled cellular telephone handheld Web-enabled computer two-way pager Nextp. 1.24 Fig. 1-29
  63. 63. Internet Appliances What is an Internet appliance or information appliance?  Computer with limited functionality whose main purpose is to connect to the Internet from home Nextp. 1.24 Fig. 1-30
  64. 64. Internet Appliances What is WebTV?  An Internet appliance in the form of a set-top box  Sits on top of or next to a television set and allows you to access the Internet on the TV Nextp. 1.25 Fig. 1-31
  65. 65. Mid-Range Servers What is a mid-range server?  More powerful and larger than a workstation computer  Supports up to 4,000 users  Often connected via a personal computer or terminal  Once known as a Next minicomputerp. 1.25 Fig. 1-32
  66. 66. Mid-Range Servers What is a terminal? Sometimes called dumb terminals Device with a • No processing monitor and power keyboard used • Cannot stand alone to access a • Must be connected server to a server to operate Nextp. 1.25
  67. 67. Mainframes What is a mainframe?  Large, expensive, very powerful computer  Can handle hundreds or thousands of connected users simultaneously  Stores tremendous amounts of data, instructions, and Next informationp. 1.26 Fig. 1-33
  68. 68. Company on the Cutting Edge  International Business Machines (IBM)  Incorporated in 1911  The first family of computers with interchangeable softwareClick to view and peripherals Web Linkthen click IBM Next  World’s largestp. 1.26 information technology company
  69. 69. Supercomputers What is a supercomputer?  Fastest, most powerful computer  Able to process more than 12 trillion instructions per second Nextp. 1.26 Fig. 1-34
  70. 70. Elements of an Information System What is an information 1. Hardware 1. Hardware system?  For an information 2. Software 2. Software system to provide accurate, timely,Click to view Web Link and useful 3. Data 3. Datathen clickWomen in information, eachTechnology element must be 5. Procedures present and all ofClick to viewWeb Link the elements mustthen click work togetherMinorities in Technology Nextp. 1.27 Fig. 1-35 4b. People (users) 4a. People (IT personnel) 4b. People (users) 4a. People (IT personnel)
  71. 71. Examples of Computer Usage What are five categories of computer users? Mobile Home Large Business Small Office/Home Office Power Nextp. 1.28 Fig. 1-36
  72. 72. Examples of Computer Usage What software is available for a home user? finance and business research management Web access entertainment Nextp. 1.29 Fig. 1-37
  73. 73. Examples of Computer Usage How do computer companies accommodate children?  Many manufacturers design special hardware for children Nextp. 1.30 Fig. 1-38
  74. 74. Examples of Computer Usage What is the digital divide?  Idea that you can separate people of the world into two distinct groups • Those who have access to technology with the ability to use it • Those who do not have access to technology or are without the ability toClick to view use itvideo Nextp. 1.30
  75. 75. Technology Trailblazer Shawn Fanning  As a 19-year-old freshman computer science major, he developed the Napster software and company  Pioneering file- sharing concept has implications for all copyrighted digital informationClick to view Web Linkthen click Shawn Fanning Nextp. 1.30
  76. 76. Examples of Computer Usage What hardware and software is Web access available for a small office/home office (SOHO) user?  Desktop usage  Local Area Network (Lan)  Productivity software  Specialty software  Web usage Nextp. 1.31 Fig. 1-39 spreadsheet
  77. 77. Examples of Computer Usage What new computer trends concern a small office/home office (SOHO) user?  E-mail • Communicate with others  E-commerce • Conduct financial business on the Web  Web cam • Allows a SOHO user to show the world a live view of some aspect of Next their businessp. 1.31
  78. 78. Examples of Computer Usage What is a mobile user?  Travel to and from a main office to conduct business  Hardware • Notebook computers • Handheld computers • Web-enabled cellular telephones  Software • Productivity Next • Presentationp. 1.32 Fig. 1-40
  79. 79. Examples of Computer Usage What are the needs of the large business user?  Network • Local area network (LAN) • Wide Area Network (WAN)  Large business Web site  Sales management  Accounting  Desktop publishing  Information systems department  Productivity software  Scheduling Next  Web accessp. 1.33 Fig. 1-41
  80. 80. Examples of Computer Usage What is a kiosk?  A freestanding computer  Usually has multimedia capability and a touch screen  Used by a large business to provide information to the publicClick to view video Nextp. 1.34 Fig. 1-43
  81. 81. Examples of Computer Usage What is telecommuting?  A work arrangement in which employees work away from a company’s standard workplace  Often communicate with the office using some communications Next technologyp. 1.34 Fig. 1-44
  82. 82. Examples of Computer Usage What are the needs of a power user?  Requires the capabilities of a workstation or other powerful computer  Types of power users • Engineers • Architects • Desktop publishers • Graphic artists  Typically work with multimedia • Combines text, graphics, sound, Next video, and otherp. 1.35 Fig. 1-45 media elements into one application
  83. 83. Computer User as a Web Publisher What is Web publishing?  Making a Web page available on the Internet  A few reasons to publish Web pages • Provide family information • Provide information about business • Provide a resume online • Provide online courses called distance- Next learning coursesp. 1.36 Fig. 1-46
  84. 84. Computer User as a Web Publisher What are other ways to use the Web?  Photo communities • Allow you to create an online photo album  Electronic storefronts • Allow a small business to advertise and take orders directly at a Web site  Communicate with othersClick to • E-mailanimation • Chat roomsview Next • Instant messagingp. 1.37 Fig. 1-47
  85. 85. Summary of Introduction to Computers  The digital revolution  What is a computer?  The components of a computer  Why is a computer so powerful?  Computer software  Networks and the Internet  Categories of computers  Personal computersNext
  86. 86. Summary of Introduction to Computers (cont.)  Handheld computers  Internet appliances  Mid-range servers  Mainframes  Supercomputers  Elements of an information system  Examples of computer usage  Computer user as a Web publisherNext
  87. 87. Chapter 1 Complete

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