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Your Interactive Guide to the Digital World
Discovering Computers
Chapter One
Basic Introduction to Computers
Objectives Overview
Discovering Computers : Chapter 1 2See Page 3 for Detailed Objectives
Objectives Overview
3See Page 3 for Detailed Objectives
Discovering Computers : Chapter 1
A World of Computers
• Computers are everywhere
4Pages 4 - 5 Figure 1-1 Discovering Computers : Chapter 1
What Is a Computer?
• A computer is an electronic device, operating under the control of instructions stored in its own memory
5Page 6
Information Processing Cycle
Discovering Computers : Chapter 1
What Is a Computer?
6Page 6 Figure 1-2
Discovering Computers : Chapter 1
The Components of a Computer
• A computer contains many electric, electronic, and mechanical components known as hardware
7Pages 6 - 8 Discovering Computers : Chapter 1
The Components of a Computer
8Page 7 Figure 1-3
Discovering Computers : Chapter 1
Advantages and Disadvantages of Using Computers
Advantages of Using Computers
Disadvantages of Using Computers
9Pages 9 - 10Discovering Computers : 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
10Page 10 Discovering Computers : Chapter 1
Networks and the Internet
• A network is a collection of computers and devices connected together, often wirelessly, via communications devices and transmission media
11Pages 10 - 11 Figure 1-6
Discovering Computers : Chapter 1
Networks and the Internet
• The Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals
12Page 11 Figure 1-7
Discovering Computers : Chapter 1
Networks and the Internet
• People use the Internet for a variety of reasons:
13Pages 12 - 13 Figure 1-8 Discovering Computers : Chapter 1
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
14Page 14 Figure 1-9
Discovering Computers : Chapter 1
Computer Software
• Software, also called a program, tells the computer what tasks to perform and how to perform them
15Pages 15 - 16Figures 1-10 - 1-11
Discovering Computers : Chapter 1
Computer Software
• Installing is the process of setting up software to work with the computer, printer, and other hardware
16Pages 16 - 17 Figure 1-12 Discovering Computers : Chapter 1
Computer Software
• A programmer develops software or writes the instructions that direct the computer to process data into information
17Page 18 Figure 1-13 Discovering Computers : Chapter 1
Categories of Computers
18Page 19 Discovering Computers : Chapter 1
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
19Pages 19 - 20 Figures 1-15 - 1-16 Discovering Computers : Chapter 1
Mobile Computers and Mobile Devices
20Pages 20 - 23 Discovering Computers : Chapter 1
Mobile Computers and Mobile Devices
21Pages 20 - 22 Figures 1-17 – 1-20
Discovering Computers : Chapter 1
Mobile Computers and Mobile Devices
22Pages 22 - 23Figures 1-21 – 1-23 Discovering Computers : Chapter 1
Game Consoles
• A game console is a mobile computing device designed for single-player or multiplayer video games
23Page 24 Figure 1-24 Discovering Computers : Chapter 1
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
24Page 25 Figure 1-25
Discovering Computers : Chapter 1
Mainframes
• A mainframe is a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously
25Page 25 Figure 1-26
Discovering Computers : Chapter 1
Supercomputers
• A supercomputer is the fastest, most powerful computer– Fastest supercomputers are capable of processing
more than one quadrillion instructions in a single second
26Page 25 Figure 1-27
Discovering Computers : Chapter 1
Embedded Computers
• An embedded computer is a special-purpose computer that functions as a component in a larger product
27Page 26 Discovering Computers : Chapter 1
Embedded Computers
28Page 26 Figure 1-28
Discovering Computers : Chapter 1
Elements of an Information System
29Page 27 Discovering Computers : Chapter 1
Elements of an Information System
30Page 27 Figure 1-29
Discovering Computers : Chapter 1
Examples of Computer Usage
31Pages 28 – 31Figures 1-30 – 1-32
Discovering Computers : Chapter 1
Examples of Computer Usage
32Pages 31 – 32Figures 1-33 – 1-34
Discovering Computers : Chapter 1
Computer Applications in Society
33Pages 34 - 36 Figures 1-36 – 1-39
Discovering Computers : Chapter 1
Computer Applications in Society
34Pages 36 - 38Figures 1-40 – 1-43
Discovering Computers : Chapter 1
Video: Computer History in a Barn
35
CLICK TO START
Discovering Computers : Chapter 1
Summary
36Page 39 Discovering Computers : Chapter 1
Your Interactive Guide to the Digital World
Discovering Computers
Chapter 1 Complete
Basic Introduction to Computers