Personal Computer and Digital World Chapter

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Discovering Computers 2011
Living in a Digital World

Objectives Overview
Define the term, computer, and describe the relationship between data and information Define the term, network, and identify benefits of sharing resources on a network

Explain why computer literacy is vital to success in today’s world

Describe the five components of a computer

Discuss the advantages and disadvantages that users experience when working with computers

Discuss the uses of the Internet and World Wide Web

See Page 3 for Detailed Objectives

Discovering Computers 2011: Living in a Digital World Chapter 1

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Objectives Overview

Distinguish between system software and application software

Differentiate among types, sizes, and functions of computers in each category

Describe the role of each element in an information system

Explain how home users, small office/home office users, mobile users, power users, and enterprise users each interact with computers

Discuss how society uses computers in education, finance, government, health care, science, publishing, travel, and manufacturing

See Page 3 for Detailed Objectives

Discovering Computers 2011: Living in a Digital World Chapter 1

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A World of Computers
• Computers are everywhere

Pages 4 - 5 Figure 1-1

Discovering Computers 2011: Living in a Digital World Chapter 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 Collects data (input) Produces information (output)

Processing

Information Processing Cycle
Page 6 Discovering Computers 2011: Living in a Digital World Chapter 1 5

What Is a Computer?

Page 6 Figure 1-2

Discovering Computers 2011: Living in a Digital World Chapter 1

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The Components of a Computer
• A computer contains many electric, electronic, and mechanical components known as hardware Input Device Output Device System Unit Storage Device Communications Device Pages 6 - 8

• Allows you to enter data and instructions into a computer • Hardware component that conveys information to one or more people • Case that contains the electronic components of the computer that are used to process data • Holds data, instructions, and information for future use • Enables a computer to send and receive data, instructions, and information to and from one or more computers or mobile devices Discovering Computers 2011: Living in a Digital World Chapter 1 7

The Components of a Computer

Page 7 Figure 1-3

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Advantages and Disadvantages of Using Computers
Advantages of Using Computers Disadvantages of Using Computers

Speed Reliability
Consistency Storage
Communications
Pages 9 - 10

Health Risks
Violation of Privacy Public Safety
Impact on Labor Force Impact on Environment
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Discovering Computers 2011: Living in a Digital World Chapter 1

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

Click to view Web Link, click Chapter 1, Click Web Link from left navigation, then click Green Computing below Chapter 1

Page 10

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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

Pages 10 - 11 Figure 1-6

Discovering Computers 2011: Living in a Digital World Chapter 1

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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

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