Computers © 2005 Prentice-Hall, Inc.Slide 1

Computers Computers, Information Technology, and You © 2005 Prentice-Hall, Inc.Slide 2

Computers Computers, Information Technology, and You Objectives Achieving IT competency The Internet and its challenges The past, present, and future of IT Global village Categories of computers Capabilities and limitations of computers © 2005 Prentice-Hall, Inc.Slide 3

Computers Computers, Information Technology, and You © 2005 Prentice-Hall, Inc.Slide 4 Information Technology (IT)

Computers Computers, Information Technology, and You Defining Information Technology Competency Knowing the language of computers Being able to use a computer Being able to surf the Internet Knowing the impact computers have and have had on society Being an intelligent consumer of computers and computer-related products © 2005 Prentice-Hall, Inc.Slide 5

Computers Computers, Information Technology, and You The Internet and Its Challenges Virtual frontier Information Superhighway The Net Telecommuting © 2005 Prentice-Hall, Inc.Slide 6

Computers Computers, Information Technology, and You Information Technology in Our Lives Yesterday: Computers became smaller Computers became less expensive Computers are now everywhere © 2005 Prentice-Hall, Inc.Slide 7

Computers Computers, Information Technology, and You Information Technology in Our Lives Today: Computers are used at home Computers are used for play Computers are used at work Computers are used at school © 2005 Prentice-Hall, Inc.Slide 8

Computers Computers, Information Technology, and You Information Technology in Our Lives Tomorrow: Digital Convergence Speech Recognition Software Video-on-demand Broadband Cashless Society Electronic Money Electronic Wallet © 2005 Prentice-Hall, Inc.Slide 9

Computers Computers, Information Technology, and You Information Technology in Our Lives Tomorrow: Shopping – anywhere, anytime Telemedicine High-Tech Voting Education National Database Telecommuting © 2005 Prentice-Hall, Inc.Slide 10

Computers Computers, Information Technology, and You Global Village Computer Network Upload – send a file to another computer Download – receive a file from another computer Surfing the Net World Wide Web (the Web) © 2005 Prentice-Hall, Inc.Slide 11

Computers Computers, Information Technology, and You Personal Computers to Supercomputers Personal Computers Wintel PCs Windows operating system Platform © 2005 Prentice-Hall, Inc.Slide 12

Computers Computers, Information Technology, and You Personal Computers to Supercomputers Notebook Computers Laptop PCs Portable Port replicator © 2005 Prentice-Hall, Inc.Slide 13

Computers Computers, Information Technology, and You Personal Computers to Supercomputers Desktop Computers System unit Stationary Windows operating system © 2005 Prentice-Hall, Inc.Slide 14

Computers Computers, Information Technology, and You Personal Computers to Supercomputers Configuring a PC System unit Keyboard Mouse or appropriate substitute Monitor © 2005 Prentice-Hall, Inc.Slide 15

Computers Computers, Information Technology, and You Personal Computers to Supercomputers Configuring a PC Printer Hard disk CD-RW and/or DVD+RW Microphone Speakers © 2005 Prentice-Hall, Inc.Slide 16

Computers Computers, Information Technology, and You Personal Computers to Supercomputers Wearable Computers Worn by the user Customized for different professions © 2005 Prentice-Hall, Inc.Slide 17

Computers Computers, Information Technology, and You Personal Computers to Supercomputers Handheld Computers Portable Personal Digital Assistant (PDA) Stylus Pen-based computing Personal Information Management (PIM) Gaming Text-to-speech software © 2005 Prentice-Hall, Inc.Slide 18

Computers Computers, Information Technology, and You Personal Computers to Supercomputers Workstations Speed Large-screen color monitors Specialized point-and-draw devices Add-on keyboards © 2005 Prentice-Hall, Inc.Slide 19

Computers Computers, Information Technology, and You Personal Computers to Supercomputers Server Computers Link and support client computers on a network Enterprise systems © 2005 Prentice-Hall, Inc.Slide 20

Computers Computers, Information Technology, and You Personal Computers to Supercomputers Supercomputers Handle applications that require little I/O but lots of computing speed Simulations Weather forecasting Study of how proteins are formed Advanced graphics used in movies Analysis of large amounts of data Simulation of child birth © 2005 Prentice-Hall, Inc.Slide 21

Computers Computers, Information Technology, and You Computer System Capabilities Data – input that goes into the computer Information – output that comes from the computer © 2005 Prentice-Hall, Inc.Slide 22

Computers Computers, Information Technology, and You The Computer’s Strengths Speed Accuracy Consistency Reliability Communications Memory Capability © 2005 Prentice-Hall, Inc.Slide 23

Computers Computers, Information Technology, and You Comparing Computers and Humans Human output is slower than computer output Humans recognize patterns quicker than computers Computers are 100% accurate in recalling stored information Humans think, computers don’t © 2005 Prentice-Hall, Inc.Slide 24

Computers Chapter 1 - Computers, Information Technology, and You Lesson Summary Achieving IT competency The Internet and its challenges The past, present, and future of IT Global village Categories of computers Capabilities and limitations of computers © 2005 Prentice-Hall, Inc.Slide 25