Chapter 1 Introduction to ComputersChapter 1 ObjectivesA World of ComputersWhat Is a Computer?Advantages/Disadvantages of Using ComputersSlide 6What Is a Computer?The Components of a ComputerSlide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Networks and the InternetSlide 20Slide 21Slide 22Computer SoftwareSlide 24Slide 25Slide 26Slide 27Slide 28Categories of ComputersPersonal ComputersMobile Computers and Mobile DevicesSlide 32Slide 33Slide 34Slide 35Game ConsolesServersEmbedded ComputersExamples of Computer UsageSlide 40Slide 41Slide 42Slide 43Computer Applications in SocietySummary of Introduction to ComputersDiscovering Computers (2014)Chapter 1 Introduction toComputersChapter 1 ObjectivesRecognize the importance of computer literacyRecognize the importance of computer literacyIdentify the components ofa computerIdentify the components ofa computerDiscuss the uses of the Internet and World Wide WebDiscuss the uses of the Internet and World Wide WebIdentify the categories of softwareIdentify the categories of softwareDescribe the categories of computersDescribe the categories of computersIdentify the types of computer usersIdentify the types of computer usersDiscuss various computer applications in societyDiscuss various computer applications in societyNextA World of ComputersWhat is computer literacy?NextKnowledge and understanding of computers and their usesComputers are everywhereMaybe a better term : Computer Fluency (adaptability)How is a computer defined?What Is a Computer?Produces and stores resultsNextElectronic device operating under the control of instructions stored in its own memoryProcesses data into informationinformationData that is organized, meaningful, and usefulAccepts datadataRaw facts, figures, and symbolsStorage CommunicationsAdvantages/Disadvantages of Using ComputersWhat are the advantages of using computers?SpeedReliabilityNextConsistencyAdvantages/Disadvantages of Using ComputersWhat are the disadvantages of using computers?NextImpact onLabor ForceViolation ofPrivacyHealth RisksPublic SafetyImpact onEnvironmentWhat Is a Computer?What is the information processing cycle?NextInputProcess SYSTEMOutputStorage/(Retrieval)CommunicationThe Components of a ComputerWhat is an input device? Hardware used to enter dataand instructionsNextThe Components of a ComputerWhat is an output device? Hardware that conveys information to one or morepeopleNextThe Components of a ComputerWhat is the system unit?Next Case containingelectroniccomponents of the computer that are used to process dataThe Components of a ComputerWhat are two main components on the motherboard?ProcessorProcessorAlso called a Central Processing Unit (CPU)The electronic component that interprets and carries out the basic instructions that operate the computerNextMemoryMemoryConsists of electronic components that store instructions waiting to be executed and data needed by those instructions [VOLATILE]The Components of a ComputerWhat is storage?Storage mediaStorage mediaPhysical materials on which data, instructions, and information are storedStorage mediaStorage mediaPhysical materials on which data, instructions, and information are storedStorage deviceStorage deviceRecords and retrieves items to and from a storage mediumStorage deviceStorage deviceRecords and retrieves items to and from a storage mediumNextHolds data, instructions, and information for future use [non-volatile = relatively permanent]The Components of a ComputerWhat are storage media?NextUSB Flash DrivesMemory Cards DVDs[CD]Hard Disks(Int/Ext)“The Cloud”Retrieves(reads)items from storagemediaRetrieves(reads)items from storagemediaRecords (writes)items to storagemediaRecords (writes)items to storagemediaThe Components of a ComputerWhat is a storage device?NextOften functionas a sourceof inputOften functionas a sourceof inputThe Components of a ComputerWhat is a USB flash drive?NextPortable storage device Small and lightweight enough to be transported on a keychain or in a pocketThe average USB flash drivecan hold about 1-128 billioncharactersPortable storage device Small and lightweight enough to be transported on a keychain or in a pocketThe average USB flash drivecan hold about 1-128 billioncharactersThe Components of a ComputerWhat is a hard disk?NextProvides greater storage capacity than a USB flash driveMost are housed inside of the system unitProvides storage capacity comparable to a hard disk, but faster.Most are housed inside of the system unitWhat is an SSD?The Components of a ComputerWhat is an optical disc?NextFlat, round, portable metal discCD+/-R and DVD+/-R also called WORM technology [en.wikipedia.org/wiki/Write_Once_Read_Many ]CD-ROMCD+/-RCD+/-R/WDVD-ROMDVD+/-RDVD+/-R/WThe Components of a ComputerWhat is a communications device?NextHardware component that enables a computer to send and receive data, instructions, and informationHardware component that enables a computer to send and receive data, instructions, and informationOccurs over cables, telephonelines, cellular radio networks,satellites, and other transmission mediaOccurs over cables, telephonelines, cellular radio networks,satellites, and other transmission mediaUsed to shareUsed to shareNetworks and the InternetA network is a collection of computers and devices connected togetherResourcesResourcesHardware devicesHardware devicesSoftware programsSoftware programsDataDataTo save time and moneyTo save time and moneyInformationInformationNextNetworks and the InternetWhat is the Internet [DoD – 1969]?NextWorldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individualsNetworks and the InternetWhy do users access the Internet?2. Information3. Shopping4. Banking and Investing5. Classes6. EntertainmentNext1. Communications7. Download Music8. Share InformationNetworks and the InternetWhat is the Web (1989)? A Web site is a collection of related Web pagesA Web site is a collection of related Web pagesA Web page contains text, graphics, audio, video, and links to other Web pagesA Web page contains text, graphics, audio, video, and links to other Web pagesYou can share information on a socialnetworking Web siteYou can share information on a socialnetworking Web siteNextBillions of documents, called Web pages, available to anyone connected to the