chapter 01 - introduction to computers
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Chapter 01 - Introduction to ComputersTRANSCRIPT
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Living in a Digital World
Discovering Computers 2011
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Objectives Overview
Discovering Computers 2011: Living in a Digital World Chapter 1
2See Page 3 for Detailed Objectives
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Objectives Overview
Discovering Computers 2011: Living in a Digital World Chapter 1
3See Page 3 for Detailed Objectives
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A World of Computers
• Computers are everywhere
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4Pages 4 - 5 Figure 1-1
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What Is a Computer?
• A computer is an electronic device, operating under the control of instructions stored in its own memory
Discovering Computers 2011: Living in a Digital World Chapter 1
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Information Processing Cycle
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What Is a Computer?
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The Components of a Computer
• A computer contains many electric, electronic, and mechanical components known as hardware
Discovering Computers 2011: Living in a Digital World Chapter 1
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The Components of a Computer
Discovering Computers 2011: Living in a Digital World Chapter 1
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Advantages and Disadvantages of Using Computers
Advantages of Using Computers
Disadvantages of Using Computers
Discovering Computers 2011: Living in a Digital World Chapter 1 9Pages 9 - 10
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Advantages and Disadvantages of Using Computers
• Green computing involves reducing the electricity consumed and environmental waste generated when using a computer
• Strategies include:– Recycling– Regulating manufacturing processes– Extending the life of computers– Immediately donating or properly disposing of replaced computers
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Networks and the Internet
• A network is a collection of computers and devices connected together, often wirelessly, via communications devices and transmission media
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Figure 1-6
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Networks and the Internet
• The Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals
Discovering Computers 2011: Living in a Digital World Chapter 1
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Networks and the Internet
• People use the Internet for a variety of reasons:
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Networks and the Internet
• A social networking Web site encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users
Discovering Computers 2011: Living in a Digital World Chapter 1
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Computer Software
• Software, also called a program, tells the computer what tasks to perform and how to perform them
Discovering Computers 2011: Living in a Digital World Chapter 1
15Pages 15 - 16Figures 1-10 - 1-11
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Computer Software
• Installing is the process of setting up software to work with the computer, printer, and other hardware
Discovering Computers 2011: Living in a Digital World Chapter 1
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Computer Software
• A programmer develops software or writes the instructions that direct the computer to process data into information
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Figure 1-13
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Categories of Computers
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Personal Computers
• A personal computer can perform all of its input, processing, output, and storage activities by itself
• Two popular architectures are the PC and the Apple– Desktop computer
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19Page 19 Figures 1-15 - 1-16
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Mobile Computers and Mobile Devices
Discovering Computers 2011: Living in a Digital World Chapter 1
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Mobile Computers and Mobile Devices
Discovering Computers 2011: Living in a Digital World Chapter 1
21Pages 20 - 22 Figures 1-17 – 1-20
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Mobile Computers and Mobile Devices
Discovering Computers 2011: Living in a Digital World Chapter 1
22Pages 22 - 23Figures 1-21 – 1-23
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Game Consoles
• A game console is a mobile computing device designed for single-player or multiplayer video games
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Figure 1-24
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Servers
• A server controls access to the hardware, software, and other resources on a network– Provides a centralized
storage area for programs, data, and information
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Figure 1-25
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Mainframes
• A mainframe is a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously
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Figure 1-26
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Supercomputers
• A supercomputer is the fastest, most powerful computer– Fastest supercomputers are capable of processing
more than one quadrillion instructions in a single second
Discovering Computers 2011: Living in a Digital World Chapter 1
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Embedded Computers
• An embedded computer is a special-purpose computer that functions as a component in a larger product
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Embedded Computers
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Elements of an Information System
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Elements of an Information System
Discovering Computers 2011: Living in a Digital World Chapter 1
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Examples of Computer Usage
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31Pages 28 – 31Figures 1-30 – 1-32
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Examples of Computer Usage
Discovering Computers 2011: Living in a Digital World Chapter 1
32Pages 31 – 32Figures 1-33 – 1-34
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Computer Applications in Society
Discovering Computers 2011: Living in a Digital World Chapter 1
33Pages 34 - 36 Figures 1-36 – 1-39
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Computer Applications in Society
Discovering Computers 2011: Living in a Digital World Chapter 1
34Pages 36 - 38Figures 1-40 – 1-43
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Video: Computer History in a Barn
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CLICK TO START
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Summary
Discovering Computers 2011: Living in a Digital World Chapter 1
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Living in a Digital World
Discovering Computers 2011
Chapter 1 Complete