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Introduction to Computersand How to Purchase Computers and Mobile DevicesMicrosoft Office 2010ObjectivesDefine the term computer and discuss the four basic computer operations: input, process, output, and storageDefine data and informationIdentify the differences among desktop computers, notebook computers, and mobile devicesExplain the primary components of the computer and their useDescribe the use of hard disks, flash memory, optical discs, and other storage mediaMicrosoft Office 2010: Introduction to Computers2ObjectivesDiscuss computer software and explain the difference between system software and application softwareIdentify several types of application softwareDiscuss the Internet and World Wide WebDescribe various types of Internet and network attacks and how to protect against themExplain how to purchase computers and mobile devicesMicrosoft Office 2010: Introduction to Computers3What Is a Computer?An electronic device, operating under the control of instructions stored in its own memory, that can:Accept data (input)Process the data according to specified rules (process)Produce results (output)Store the results (storage) for future useMicrosoft Office 2010: Introduction to Computers4What Is a Computer?Microsoft Office 2010: Introduction to Computers5

What is a Computer?Four basic operations compromise the information processing cycleMicrosoft Office 2010: Introduction to Computers6

The Components of a ComputerThe six primary components of a computer are input devices, the processor (control unit and arithmetic/logic unit), memory, output devices, storage devices, and communications devicesThe processor, memory, and storage devices are housed in a box-like case called the system unitA peripheral is a device that connects to the system unit and is controlled by the processor in the computerMicrosoft Office 2010: Introduction to Computers7The Components of a ComputerMicrosoft Office 2010: Introduction to Computers8

Personal Computers and Mobile DevicesA personal computer is a computer that can perform all of its input, processing, output, and storage activities by itselfA mobile device is a computing device small enough to hold in your handMicrosoft Office 2010: Introduction to Computers9Personal Computers and Mobile DevicesDesktop computerNotebook computerLaptop computerNetbookTablet PCMobile devicesSmart phonePortable media playerDigital cameraMicrosoft Office 2010: Introduction to Computers10

Input DevicesAn input device is any hardware component that allows you to enter data and instructions into a computerA keyboard is an input device that contains keys users press to enter data and instructions into the computerA stylus is a small metal or plastic device that looks like a tiny ink pen, but uses pressure instead of inkA mouse is a pointing device that fits comfortably under the palm of your handMost notebook computers have a touchpad, a small, flat, rectangular pointing deviceMicrosoft Office 2010: Introduction to Computers11Input DevicesMicrosoft Office 2010: Introduction to Computers12

Input DevicesOther input for mobile devicesMicrosoft Office 2010: Introduction to Computers13

System UnitThe system unit is a case that contains electronic components of the computer used to process dataThe processor (CPU) interprets and carries out the basic instructions that operate a computerArithmetic/logic unitMemory (RAM) consists of electronic components that store instructions waiting to be executed and data needed by those instructionsMicrosoft Office 2010: Introduction to Computers14System UnitMicrosoft Office 2010: Introduction to Computers15

Output DevicesOutput devices are hardware components that convey information to one or more peopleA printer is an output device that produces text and graphics on a physical medium such as paperInk-jet printerPhoto printerLaser printerMultifunction peripheral (all-in-one device)Microsoft Office 2010: Introduction to Computers16Output DevicesMicrosoft Office 2010: Introduction to Computers17

Display DevicesA display device is an output device that visually conveys text, graphics, and video informationLCD monitors use a liquid crystal display to produce images on the screenMicrosoft Office 2010: Introduction to Computers18

Display DevicesMicrosoft Office 2010: Introduction to Computers19

Storage DevicesA storage device is the computer hardware that records and/or retrieves items to and from storage mediaA hard disk is a storage device that contains one or more inflexible, circular platters that use magnetic particles to store data, instructions, and informationSectorsTracksMicrosoft Office 2010: Introduction to Computers20

Storage DevicesMicrosoft Office 2010: Introduction to Computers21

Storage DevicesAn external hard disk is a separate freestanding hard disk that connects with a cable to a port on the system unit or communicates wirelesslyA removable hard disk is a hard disk that you insert and remove from a driveMicrosoft Office 2010: Introduction to Computers22

Storage DevicesFlash memory is a type of memory that can be erased electronically and rewrittenSolid state mediaA solid state drive (SSD) is a storage device that typically uses flash memory to store data, instructions, and informationMicrosoft Office 2010: Introduction to Computers23

Storage DevicesA memory card is a removable flash memory device, usually no bigger than 1.5 inches in height or width, that you insert and remove from a slot in a computer, mobile device, or card reader/writerMicrosoft Office 2010: Introduction to Computers24

Storage DevicesA USB flash drive, sometimes called a thumb drive, is a flash memory storage device that plugs into a USB port on a computer or mobile deviceAn ExpressCard module is a removable device mobile device that fits in an ExpressCard slotMicrosoft Office 2010: Introduction to Computers25

Storage DevicesAn optical disc is a flat, round, portable metal disc with a plastic coatingMicrosoft Office 2010: Introduction to Computers26

Storage DevicesCloud storage is an Internet service that provides hard disk storage to computer usersMicrosoft Office 2010: Introduction to Computers27

Communications DevicesA communications device is a hardware component that enables a computer to send (transmit) and receive data, instructions, and information to and from one or more computers or mobile devicesTransmission mediaMicrosoft Office 2010: Introduction to Computers28Computer SoftwareSoftware, also called a program, consists of a series of related instructions, organized for a common purpose, that tells the computer what tasks to perform and how to perform themGraphical user interfaceWeb applicationSystem software consists of programs to control the operations of computer and its devicesOperating systemUtility programMicrosoft Office 2010: Introduction to Computers29Computer Software

Microsoft Office 2010: Introduction to Computers30Computer SoftwareApplication software consists of programs designed to make users more productive and/or assist them with personal tasksWord processingPresentationSpreadsheetDatabaseE-mailMicrosoft Office 2010: Introduction to Computers31Computer SoftwareMicrosoft Office 2010: Introduction to Computers32

Networks and the InternetA network is a collection of computers and devices connected together, often wirelessly, via communications devices and transmission mediaLocal area networkWide area networkMicrosoft Office 2010: Introduction to Computers33

Networks and the InternetThe Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individualsInternet service provider (ISP)Online service provider (OSP)Wireless Internet service provider (WISP)Microsoft Office 2010: Introduction to Computers34Networks and the InternetThe World Wide Web contains billions of documents called Web pagesWeb pageWeb siteWeb browserWeb addressHypertext transfer protocolMicrosoft Office 2010: Introduction to Computers35

Networks and the InternetWhen you conduct business activities online, you are participating in electronic commerce, also known as e-commerceBusiness to consumer (B2C)Consumer to consumer (C2C)Business to business (B2B)Microsoft Office 2010: Introduction to Computers36Searching the Web

Microsoft Office 2010: Introduction to Computers37Computer Viruses and Other MalwareComputer virusWormTrojan horseRootkitAn antivirus program protects a computer against viruses by identifying and removing any computer viruses found in memory, on storage media, or on incoming filesMicrosoft Office 2010: Introduction to Computers38Computer Viruses and Other Malware

Microsoft Office 2010: Introduction to Computers39How to Purchase a Desktop ComputerDetermine the specific software to use on your computerKnow the system requirements of the operating systemLook for bundled softwareAvoid buying the least powerful computer availableConsider upgrades to the mouse, keyboard, monitor, printer, microphone, and speakers

Microsoft Office 2010: Introduction to Computers40How to Purchase a Desktop ComputerDetermine whether to use a broadband or dial-up connection to access the InternetUse a worksheet to compare computers, services, and other considerationsIf you are buying a new computer, you have several purchasing options: buying from a school bookstore, a local computer dealer, a local large retail store, or ordering by mail via telephone or the WebIf you are buying a used computer, stay with name brands such as Dell, Apple, HP, and GatewayIf you have a computer and are upgrading to a new one, then consider selling or trading in the old oneMicrosoft Office 2010: Introduction to Computers41How to Purchase a Desktop ComputerBe aware of hidden costsConsider more than just priceAvoid restocking feesUse a credit card to purchase a new computerConsider purchasing an extended warranty or service planMicrosoft Office 2010: Introduction to Computers42How to Purchase a Notebook ComputerDetermine which computer fits your mobile computing needsPurchase a notebook computer with a sufficiently large screenExperiment with different keyboards, pointing devices, and digital pensMake sure the notebook computer you purchase has an optical disc driveIf necessary, upgrade the processor, memory, and disk storage at the time of purchaseThe availability of built-in ports and slots and a USB hub on a notebook computer is importantMicrosoft Office 2010: Introduction to Computers43How to Purchase a Notebook ComputerIf you plan to use your notebook computer for note-taking at school or in meetings, consider a convertible Tablet PCIf you purchase a Tablet PC, determine whether you require multi-touch technology Purchase a notebook computer with an integrated Web camCheck with your wireless carrier to see if it offers netbooks for salePurchase a notebook computer with a built-in wireless network connectionMicrosoft Office 2010: Introduction to Computers44How to Purchase a Notebook ComputerIf you plan to use your notebook computer for long periods without access to an electrical outlet, purchase a second batteryPurchase a well-padded and well-designed carrying caseIf you plan to connect your notebook computer to a video projector, make sure the notebook computer is compatible with the video projectorFor improved security and convenience, consider a fingerprint scannerReview the docking capabilities of the Tablet PCMicrosoft Office 2010: Introduction to Computers45How to Purchase a Smart PhoneChoose a wireless carrier and plan that satisfies your needs and budgetDecide on the size, style, and weight of the smart phone that will work best for youDetermine whether you prefer a touch screen, keypad, or mini-keyboardIf you will be synchronizing your smart phone with a program on your computer, select a smart phone that is compatible with the program you wish to useMicrosoft Office 2010: Introduction to Computers46How to Purchase a Smart PhoneCompare battery lifeMake sure your smart phone has enough memory and storageCheck out the accessoriesMicrosoft Office 2010: Introduction to Computers47How to Purchase a Portable Media PlayerChoose a device with sufficient storage capacityDetermine which file formats your new portable media player should support and how you will add files to your libraryConsider a portable media player that can play videoRead reviews about the sound quality on the portable media players you are consideringMicrosoft Office 2010: Introduction to Computers48How to Purchase a Portable Media PlayerSelect a size and style that works best for youCheck out additional memory cardsConsider rechargeable batteriesStay within your budgetMicrosoft Office 2010: Introduction to Computers49How to Purchase a Digital CameraDetermine the type of digital camera that meets your needsThe digital camera with the highest resolution is not always the bestConsider size and weightDifferent cameras require different memory cardsPhoto editing features can save you timeMicrosoft Office 2010: Introduction to Computers50How to Purchase a Digital CameraMake sure that you can see the LCD screen easilyDetermine whether your pictures will require you to zoomPrice is importantKnow your batteriesPurchase accessoriesMicrosoft Office 2010: Introduction to Computers51SummaryDefine the term computer and discuss the four basic computer operations: input, process, output, and storageDefine data and informationIdentify the differences among desktop computers, notebook computers, and mobile devicesExplain the primary components of the computer and their useDescribe the use of hard disks, flash memory, optical discs, and other storage mediaMicrosoft Office 2010: Introduction to Computers52SummaryDiscuss computer software and explain the difference between system software and application softwareIdentify several types of application softwareDiscuss the Internet and World Wide WebDescribe various types of Internet and network attacks and how to protect against themExplain how to purchase computers and mobile devicesMicrosoft Office 2010: Introduction to Computers53Introduction to ComputersCompleteMicrosoft Office 2010