1. McGraw-Hill/Irwin Copyright © 2008 by The McGraw-Hill Companies, Inc. All rights reserved. Chapter 1 Information Technology, The Internet, and You

2. 1-2 Competencies (Page 1 of 2) Explain the five parts of an information system: people, procedures, software, hardware, and data. Distinguish between system software and application software. Discuss the three kinds of system software programs. Identify the four types of computers and the four type of microcomputers. Page 2

3. 1-3 Competencies (Page 2 of 2) Describe the different types of computer hardware including the system unit, input, output, storage, and communication devices. Define data and describe document, worksheet, and presentation files. Explain computer connectivity, the wireless revolution, and the Internet. Page 2

4. 1-4 Introduction Computer competency refers to acquiring computer- related skills Microcomputers are common tools in all areas of life New forms of learning have developed New ways to communicate, to find people with similar interests, and to buy goods are available. Page 3

5. 1-5 Five Parts of an Information System 1.People 2.Procedures 3.Software 4.Hardware 5.Data Page 4

6. 1-6 People Most important part of any system Contact is … –Direct –Indirect Computer uses –Business & Entertainment –Education & Medicine Page 6

7. 1-7 Software Two major kinds of software –System SoftwareSystem Software –Application SoftwareApplication Software Page 7

8. 1-8 System Software A collection of programs-not a single program Enables the application software to interact with the hardware “Background software” that helps the computer manage its own resources Return Page 8

9. 1-9 Application Software End-user software Two major categories –Basic Application or General purpose –Specialized applications Page 9

10. 1-10 Hardware - Types of Computers Supercomputers Mainframe computers Minicomputers (also known as mid-range computers) Microcomputers Page 10

11. 1-11 Microcomputer Types Desktop Notebook or laptop Tablet PC Handheld Page 11

12. 1-12 Desktop Computers Desktop computers are small enough to fit on top of or alongside a desk yet are too big to carry around Return Page 11

13. 1-13 Notebook or Laptop Computers Notebook computers, also known as laptop computers, are portable, lightweight, and fit into most briefcases Return Page 11

14. 1-14 Tablet PC A tablet PC is a type of notebook computer that accepts your handwriting. This input is digitized and converted to standard text that can be further processed by programs such as a word processor. Return Page 11

15. 1-15 Handheld Are the smallest and are also known as palm computers. These systems typically combine pen input, writing recognition, personal organizational tools, and communications capabilities. Personal digital assistants (PDA’s) are the most widely used handheld computer. Page 11

16. 1-16 Microcomputer Hardware Four basic categories of equipment: –System UnitSystem Unit –Input/OutputInput/Output –Secondary StorageSecondary Storage –CommunicationCommunication Page 11

17. 1-17 System Unit Two important components –Microprocessor –Memory Page 12 Return

18. 1-18 Input/Output Devices Common input devices are the keyboard and the mouse Common output devices are printers and monitors Page 12 Return

19. 1-19 Secondary Storage Page 13 Return Unlike memory, secondary storage holds data and programs even if electrical power is not available The most important types of secondary media are floppy, hard, and optical disks

20. 1-20 Communications Page 13 Communication Devices provide microcomputers with the ability to communicate with other computer systems across the globe The modem is the most widely used communication device Modems modify telephone communications into a form that can be processed by a computer Modems also modify computer output into a form that can be transmitted across standard telephone lines

21. 1-21 Data Raw, unprocessed facts Processed data becomes information Stored electronically in files –Document filesDocument files –Worksheet filesWorksheet files –Database filesDatabase files –Presentation filesPresentation files Page 14

22. 1-22 Document Files Created by word processors to save documents such as memos, term papers, and letters Return Page 14

23. 1-23 Worksheet Files Created by electronic spreadsheets to analyze things like budgets and to predict sales Return Page 14

24. 1-24 Presentation Files Created by presentation graphics programs to save presentation materials. For example, a file might contain audience handouts, speaker notes, and electronic slides. Page 15

25. 1-25 Connectivity, the Wireless Revolution, and the Internet Connectivity –Sharing of information –Wireless communication is becoming popular Computer networks –Connected communication system of computers –Largest network is the Internet Page 15

26. 1-26 A Look to the Future The Internet & Web Powerful Software Powerful Hardware Security & Privacy Organizations Changing Times Page 17

27. 1-27 Discussion Questions (Page 1 of 2) Explain the five parts of an information system. What is system software? What kinds of programs are included in system software? Page 24

28. 1-28 Describe the different types of computers. What is the most common type? What are the types of microcomputers? What is connectivity? What is a computer network? What is the Internet? What is the Web? Page 24 Discussion Questions (Page 2 of 2)