Presentation on theme: "Chapter 1 Why Study Computers and Digital Technologies?"— Presentation transcript:
1 Chapter 1 Why Study Computers and Digital Technologies? What is a Computer?The Power of ConnectionsWhat Can Computers Do?Information SystemsUsing Digital Technologies to Succeed in Your CareerUsing Digital Technologies to Achieve Personal GoalsInformation Security and the Social Impact and Implications of Digital TechnologiesPlease discontinue use of cell phone and turn off ringer
2 Some Fundamental Concepts 1.1 What is a Computer?Some Fundamental ConceptsComputer literacyComputerTechnologyDigital electronics deviceBitByteFileDataDigitizationInformationMicroprocessorKilo, Mega, Giga, etcHardwareSoftwarePersonal computerComputing platformServerSupercomputerKioskEmbedded computerKey Terms
4 Electronic instructions A Computer is…A digital electronics device that combine hardware and software to accept the input of data, process and store the data, and produce some useful output.Tangible componentsElectronic instructionsHow do these concepts relate to a digital music player?
5 Digital ElectronicsDigital electronics devices store and process bits electronically.A bit represents data using 1’s and 0’sEight bits is a byte – the standard grouping in digital electronicsDigitization is the process of transforming information into 1’s and 0’sFor more on digitization:
6 General and Special Purpose Computers General-purpose computers can run any number of software applicationsSpecial-purpose computers are designed primarily for one particular functionComputer Literacy is a working understanding of computers and their uses
7 Producing Valuable Information Data: items stored on a digital electronics device: text and valuesInformation: data organized and presented in a manner that provides value to the user: documents, graphs, music, photosComputers provide value to people by transforming data into information.Relate these concepts to
8 Digital Technology Metrics Kilo, Mega, Giga, what comes next?
9 Personal Computer (PC) General purpose computer designed to accommodate an individual’s needs.Desktop computerNotebook computerTablet PCHandheld PCExamples:
10 Computing PlatformA computer’s type, processor, and operating system define its computing platform.
11 Types of General Purpose Computer Systems SupercomputerMost powerful with fastest processing speedsServerPowerful, multiprocessor computers that provide services to many users over a networkP O W E RWorkstationPowerful, multiprocessor,special-purpose PCPersonal Computer (PC)
12 Special-Purpose Computers & Mobile Digital Devices Digital Music PlayersGame consolesKioskEmbedded Computers
13 Review Is a bank ATM machine a computer? Why? What type of computer? How many bits in a byte?How many MB’s in a GB?What comes after GB?How many GB’s in a PB?List 4 types of personal computers.What is the most powerful type of computer?What kind of computer delivers Web pages to browsers?ReviewIs a bank ATM machine a computer? Why? What type of computer?How many bits in a byte?How many MB’s in a GB?What comes after GB?How many GB’s in a PB?List 4 types of personal computers.What is the most powerful type of computer?What kind of computer delivers Web pages to browsers?
14 1.2 The Power of Connections Telecommunications and Computer NetworksTelecommunicationsComputer NetworkProtocolsThe InternetWorld Wide WebWireless NetworkWi-FiKey Terms
15 Telecommunications & Computer Networks Telecommunications are communications that take place electronically over a distance.A computer network is a telecommunications network that connects two or more computers for data communications.
16 The Internet & Web1,022,863,307 Internet UsersThe Internet is the worlds largest public computer network, a network of networks, that provides a vast array of services.The Web is an Internet service that provides convenient access to information through hyperlinksMore Internet info at:
17 Wireless NetworkingWireless networks use radio signals rather than cables to connect users.Wi-fi is a popular wireless standard.Wireless CampusWi-fi Access Point
18 ..and what can’t they do? 1.3 What Can Computers Do? Key Terms Artificial Intelligence (AI)VoIPComputer-based information systemdatabaseKey Terms
19 The Computer and Human Relationship “Things that computers do well –working with large amounts of data, and repetitive tasks, are things that people find difficult or monotonous, and the creative and interpersonal endeavors that people find most engaging, computers are ill suited to perform”.
21 ComputingComputers were invented to compute –calculate solutions to mathematical problems.Production Sequencing Facility at DOE's Joint Genome Institute in Walnut Creek, CAArtificial Intelligence (AI) deals with simulating human thought and behavior in computers.…used to extend natural human abilities, and take over and automate activities that people find tedious, dangerous, or difficult.
22 AutomatingRobotic Automotive Assembly LineAutomation involves utilizing computers to control otherwise human actions and activities.Mars Rover
23 Enhancing Communication Computer systems control, support, or provide many forms of communication.Voice over Internet Protocol (VoIP) popular technology that allows phone conversations to travel over the Internet (see
24 Providing Entertainment Computers act as our tools for the production, storage, distribution, and delivery ofvideo and motion picturesphotosartmusicgamesFor more on special effects in The Matrix:Neo stopping bullets in The Matrix Reloaded
25 Managing InformationA Computer-based Information System (CBIS) uses these components to manage and distribute information.Database a collection of data stored on a computer and organized to meet user’s needs.
26 ReviewWhat does a telephone, a radio, a television, and a computer network have in common?What standard is used for wireless networking on college campuses?What are the six components of a Computer-based Information System?What does a telephone, a radio, a television, and a computer network have in common?What standard is used for wireless networking on college campuses?What are the six components of a Computer-based Information System?
27 1.4 Information Systems Key Terms Information technology (IT) Systems developmentTransaction support system (TPS)Management Information System (MIS)Decision Support System (DSS)Expert SystemKey Terms
28 Information SystemsSystems development is the activity of creating or modifying existing information systems.
29 Information System Types Expert System (ES)COMPLEXITY / INTELLIGENCEDecision Support System (DSS)Management Information System (MIS)Transaction Processing System (TPS)
30 Transaction Processing System A TPS is an information system used to support and record transactions.E-commerce Transactions carried out online, over the Internet or other telecommunications network.
31 Management Information System An MIS is an information system used to provide useful information to decision makers, usually in the form of a report.
32 Decision Support System A DSS is an information system used to support problem-specific decision-making.
33 Expert SystemAn ES is an information system that utilizes AI techniques to make suggestions and reach conclusions in one particular area of expertise.
34 ReviewList the four types of information systems in order from least to most powerful.What type of information system is Google?What type of information system is used to purchase items on eBay?The Online Auto mechanic Web site allows users to work through a number of questions dealing with symptoms of engine behavior and then provides suggestions as to what is wrong with the engine. What type of information system is this?List the four types of information systems in order from least to most powerful.What type of information system is Google?What type of information system is used to purchase items on eBay?The Online Auto mechanic Web site allows users to work through a number of questions dealing with symptoms of engine behavior and then provides suggestions as to what is wrong with the engine. What type of information system is this?
35 1.5 Using Digital Technologies to Succeed in Your Career Digital Technologies in…Computer ProfessionsBusiness & CommunicationsScience and MathematicsEngineeringSocial SciencesFine ArtsSports, Nutrition, and ExerciseGovernment & LawMedicine and Health CareCriminology, Law Enforcement, and SecurityEducation and TrainingReadon yourown
36 1.6 Using Digital Technologies to Achieve Personal Goals Digital Technologies in…Personal FinancePersonal Information ManagementPersonal ResearchPersonal RelationsReadon yourown
37 1.7 Information Security and the Impact and Implications of Digital Technologies HackerDigital divideKey Terms
38 Information SecurityHacker an individual who subverts computer security without authorization.Information security refers to the protection of information systems and the information they manage against unauthorized access, use, manipulation, or destruction, and against the denial of service to authorized users.More on Info Sec at
39 The Global Perspective Digital technologies are impacting the world socially and economically and providing many ethical issues.The Digital Dividetitle used for the social and economic gap between those that have access to computers and information technologies and those that do not.More on Digital Divide World Economic Forum IT Web site AMD Effort Web siteHow is the world being impacted?What are some of the ethical issues?
40 Chapter 1 Questions?Don’t forget to turn your phone on!!