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1、1 1CHAPTERINFORMATION TECHNOLOGY, THE INTERNET, AND YOU1-2Competencies Explain the five parts of an information systemDistinguish between application and system softwareDistinguish between special purpose and general purpose application softwareIdentify the types of computers and microcomputersDescr
2、ibe the different types of hardware1-3Competencies cont.Define data and describe filesExplain connectivity and the wireless revolutionDescribe the Internet and the Web1-4Five Parts of an Information System1.People2.Procedures3.Software4.Hardware5.Data1-5PeopleMost important part of any systemContact
3、 is DirectIndirectComputer usesBusiness & EntertainmentEducation & Medicine1-6SoftwarePrograms Instructions Two major kinds of softwareSystem SoftwareApplication Software1-7System SoftwareA collection of programsEnables the application software to interact with the hardwareBackground software that h
4、elps the computer manage its own resources1-8“End-user” softwareTwo major categoriesGeneral purposeSpecial purposeApplication Software1-9HardwareEquipment that processes the dataControlled by softwarePhysical devicesKeyboardMouseMonitorOther devices 1-10Types of ComputersSupercomputersMainframe comp
5、utersMinicomputersMicrocomputers1-11SupercomputersHigh capacityUsed by large organizationsTracking space Tracking weather1-12Mainframe ComputersOccupies specially wired, air-conditioned roomsCapable of great processing speeds and data storageNot as powerful as supercomputers1-13MinicomputersKnown as
6、 midrange computersMedium-size companiesUsed by departments of large companies1-14MicrocomputersLeast powerfulWidely usedFour typesDesktopNotebook or laptopTablet PCHandheld 1-15Microcomputer HardwareSystem unitInput/output devicesSecondary storageCommunications1-16DataRaw, unprocessed factsProcessi
7、ng creates informationStored electronically in filesDocument filesWorksheet filesDatabase filesPresentation files1-17Connectivity, the Wireless Revolution, and the InternetConnectivitySharing of information Wireless communication is becoming popularComputer networksConnected communication system of
8、computersLargest network is the Internet1-18A Look to the FutureComputer CompetentThe Internet & the WebPowerful software & hardwarePrivacy & securityOrganizationsChanging Times1-19Key Termsapplication software (9)basic application (9)chassis (12)communication device (14)compact disc (CD) (14)comput
9、er competency (3)computer network (16)Computing Essentials CD (8)connectivity (16)Data (5)database file (15)desktop computer (11)device driver (9)digital versatile disk (DVD) (14)digital video disc (DVD) (14)document file (15)1-20Key Termsend user (4)floppy disk (14)general-purpose (9) application h
10、andheld computer (11)hard disk (14)hardware (5)information (4) information system (4)information technology (IT) (5)input device (12)Internet (16)keyboard (12)laptop computer (11)mainframe computer (11)memory ( 12) microcomputer (11) 1-21Key Termsmicroprocessor (12)midrange computer (11)minicomputer
11、 (11)modem (14)monitor (12)mouse (12)network (16)notebook computer (11)operating system (9)optical disk ( 14)output device (12)palm computer (11)people (4)personal digital assistant (PDA) (11)presentation file (15)primary storage (12)printer (12)1-22Key Termsprocedures (4)program (4)random access me
12、mory (RAM) (12)secondary storage device (14)service program (9)software (4)specialized application (10)special-purpose application (10)supercomputer (11)SimNet Concepts (8)system cabinet (12)system software (9)system unit (12)tablet PC (11)1-23Key Termstemporary storage (12)utility (9)video display
13、screen (12)Web (16)wireless revolution (16)worksheet file (15)World Wide Web (WWW) (16)1-24FAQsWhat is an information system?What is IT?How does raw data become information?What is an operating system? What are specialized applications? Please give some examples.Is the Internet the same as the World Wide Web?1-25Discussion Questions How are you using information technology?Explain the difference between system and application software.Describe some of the uses for handheld computers.Why is the wireless revolution so important?
