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Microsoft Office 2007Essential Introduction to Computersand How to Purchase aPersonal Computer

Objectives Define the term computer and discuss the four basiccomputer operations: input, processing, output, andstorage Define data and information Explain the principal components of the computerand their use Describe the use of magnetic disks, USB flash drives,and other storage media Discuss computer software and explain thedifference between system software and applicationsoftwareMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition2

Objectives Identify several types of personal computerapplication software Discuss computer communications channels andequipment and the Internet and World WideWeb Define e-commerce Explain how to purchase a personal computerMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition3

What is a Computer? An electronic device, operating under the controlof instructions stored in its own memory, thatcan:– Accept data (input)– Process the data according to specified rules(process)– Produce results (output)– Store the results for future use (storage)Microsoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition4

What is a Computer?Microsoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition5

What Does a Computer Do? Four basic operations compromise theinformation processing cycleMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition6

What are the Components of aComputer? The six primary components of a computer areinput devices, the processor (control unit andarithmetic/logic unit), memory, output devices,storage devices, and communications devices The processor, memory, and storage devices arehoused in a box-like case called the system unitMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition7

What are the Components of aComputer?Microsoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition8

Input Devices An input device is any hardware component thatallows you to enter data, programs, commands,and user responses into a computer– A keyboard is an input device that contains keys youpress to enter data into the computer– A stylus is a small metal or plastic device that lookslike a ballpoint pen, but uses pressure instead of inkto write, draw, or make selections– Smart phones often include a digital camera so userscan send pictures and videos to othersMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition9

Input DevicesMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition10

Input Devices A mouse is a pointing device that fits comfortablyunder the palm of your hand– Pointer or mouse pointer– Most notebook computers come with a touchpadMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition11

System Unit The system unit is a case that contains electroniccomponents of the computer used to processdata– The processor (CPU) interprets and carries out thebasic instructions that operate a computer Arithmetic/logic unit– Memory (RAM) consists of electronic componentsthat temporarily stores instructions waiting to beexecuted by the processor, data needed by thoseinstructions, and the results of processed dataMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition12

System UnitMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition13

Output Devices Output devices make the information resultingfrom processing available for use– An impact printer prints by striking an inked ribbonagainst the paper– Nonimpact printers form characters by means otherthan striking a ribbon against paper Inkjet– Photo printers LaserMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition14

Output DevicesMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition15

Display Devices A display device is an output device that visuallyconveys text, graphics, and video information– Monitor Flat panel monitor– LCD CRTMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition16

Display DevicesMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition17

Storage Devices A storage device is used to store instructions,data, and information when they are not beingused in memory– Magnetic disks use magnetic particles to store itemson a disk’s surface FormattingTrackSectorsPortable storage mediumMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition18

Storage Devices A hard disk is a storage device that contains oneor more inflexible, circular platters thatmagnetically store data, instructions, andinformation– Head crash– BackupMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition19

Storage Devices A floppy disk is an inexpensive portable storagemediumMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition20

Storage Devices An optical disc is aportable storagemedium that consistsof a flat, round,portable disc made ofmetal, plastic, andlacquer that is writtenand read by a laserMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition21

Storage Devices Tape is a magnetically coated ribbon of plastichoused in a tape cartridge– Tape driveMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition22

Storage Devices Miniature mobile storage media are rewriteablemedia usually in the form of a flash memorycard, USB flash drive, or a smart cardMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition23

Storage DevicesMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition24

Storage Devices A smart card stores data n a thin microprocessorembedded in the cardMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition25

Communications Devices A communications device is a hardwarecomponent that enables a computer to send andreceive data, instructions, and information toand from one or more computers– Transmission mediaMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition26

Computer Software System software consists of programs to controlthe operations of computer equipment– Operating system Microsoft Windows VistaMicrosoft Windows XPApple Mac OS XLinux– Booting– Graphical user interface (GUI) IconMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition27

Computer Software Application software consists of programsdesigned to make users more productive and/orassist them with personal tasks– Word processing– Spreadsheet– Database– Presentation graphicsMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition28

Computer SoftwareMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition29

Networks and the Internet A network is a collection of computers anddevices connected together, often wirelessly, viacommunications devices and transmission media– Local area network– Wide area networkMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition30

Networks and the Internet The world’s largest network is the Internet, whichis a worldwide collection of networks thatconnects millions of businesses, governmentagencies, educational institutions, andindividuals– Internet service provider (ISP)– Online service provider (OSP)– Wireless Internet service provider (WISP)Microsoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition31

Networks and the Internet The World Wide Web contains billions ofdocuments called Web pages– Web page– Web site– Web browser– Uniform Resource Locator (URL)– Hypertext transfer protocolMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition32

Networks and the Internet When you conduct business activities online, youare participating in electronic commerce, alsoknown as e-commerce– Business to consumer (B2C)– Consumer to consumer (C2C)– Business to business (B2B)Microsoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition33

How to Purchase a Personal Computer Do you want a desktop computer or mobilecomputer? For what purposes will you use the computer? Should the computer be compatible with thecomputers at school or work?Microsoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition34

How to Purchase a Desktop Computer Determine the specific software you want to useon your computer Know the System Requirements of the OperatingSystem Look for bundled software Avoid buying the least powerful computeravailable Consider upgrades to the mouse, keyboard,monitor, printer, microphone, and speakersMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition35

How to Purchase a Desktop Computer Determine whether you want to use telephone lines orbroadband (cable or DSK) to access the Internet If you are using a dial-up or wireless connection toconnect to the Internet, then select an ISP or OSP Use a worksheet to compare computers, services, andother considerations If you are buying a new computer, you have severalpurchasing options: buying from your school bookstore, alocal computer dealer, a local large retail store, or orderingby mail via telephone or the Web If you are buying a used computer, stay with name brandssuch as Dell, Gateway, Hewlett-Packard, and AppleMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition36

How to Purchase a Desktop Computer If you have a computer and are upgrading to anew one, then consider selling or trading in theold one Be aware of hidden costs Consider more than just price Avoid restocking fees Use a credit card to purchase your new computer Consider purchasing an extended warranty orservice planMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition37

How to Purchase a Notebook Computer Purchase a notebook computer with asufficiently large active-matrix screen Experiment with different keyboards andpointing devices Make sure the notebook computer you purchasehas a CD and/or DVD drive If necessary, upgrade the processor, memory,and disk storage at the time of purchaseMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition38

How to Purchase a Notebook Computer The availability of built-in ports and a port extenderon a notebook computer is important If you plan to use your notebook computer for notetaking at school or in meetings, consider a notebookcomputer that converts to a Tablet PC Purchase a notebook computer with a built-inwireless network connection If you are going to use your notebook computer forlong periods without access to an electrical outlet,purchase a second batteryMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition39

How to Purchase a Notebook Computer Purchase a well-padded and well-designedcarrying case If you travel overseas, obtain a set of electricaland telephone adapters If you plan to connect your notebook computerto a video projector, make sure the notebookcomputer is compatible with the video projector For improved security, consider a fingerprintscannerMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition40

How to Purchase a Tablet PC Make sure the Tablet PC fits your mobilecomputing needs Decide whether you want a convertible or pureTablet PC Be sure the weight and dimensions areconducive to portability Port availability, battery life, and durability areeven more important with a Tablet PC than theyare with a notebook computerMicrosoft Office 2007: Introductory Concepts and Techniques - Windows Vista Edition41