See Page 3 for Detailed Objectives
Your Interactive Guide to the Digital World Discovering
Computers 2012
Objectives Overview
Define the term,
Define the term,
Explain why computer, and Explain why computer, and
Describe the five Describe the five computer literacy describe the computer literacy describe the components of a components of a is vital to success relationship is vital to success relationship computer computer in today’s world between data and in today’s world between data and
information
information
Discuss the Discuss the
Define the term,
Define the term,
advantages and advantages and network, and Discuss the uses of network, and Discuss the uses of disadvantages that disadvantages that identify benefits of the Internet and identify benefits of the Internet and users experience users experience sharing resources World Wide Web sharing resources World Wide Web when working with when working withon a network
on a network
computers computersSee Page 3 for Detailed Objectives Discovering Computers 2012: Chapter 1
Objectives Overview
Diferentiate among
Diferentiate among
Distinguish between types, sizes, and Describe the role of
Distinguish between types, sizes, and Describe the role of
system software and functions of each element in an
system software and functions of each element in an
application software computers in each information system
application software computers in each information system
category
category
Explain how home Explain how home
Discuss how society Discuss how society users, small users, small uses computers in uses computers in ofce/home ofce ofce/home ofce education, finance, education, finance, users, mobile users, users, mobile users, government, health government, health power users, and power users, and care, science, care, science, enterprise users each enterprise users each publishing, travel, and publishing, travel, and interact with interact with manufacturing manufacturing computers computers
See Page 3 for Detailed Objectives Discovering Computers 2012: Chapter 1
A World of Computers
- Computers are everywhere
Pages 4 - 5 Discovering Computers 2012: Chapter 1
What Is a Computer?
- A computer is an electronic device, operating under the control of instructions stored in its own memory
Discovering Computers 2012: Chapter 1 Page 6
Collects data
(input)
Processin
g
Produces informa tion(output)
Information Processing Cycle
What Is a Computer?
Page 6 Discovering Computers 2012: Chapter 1
The Components of a Computer
- A computer contains many electric, electronic, and mechanical components known as
Allows you to enter data and instructions into a Allows you to enter data and instructions into a hardware
Input Device Input Device
computer computer Output Hardware component that conveys information to one or
Output
- Hardware component that conveys information to one or
- more people more people
Device Device
Case that contains the electronic components of the
- Case that contains the electronic components of the
- System Unit
System Unit
computer that are used to process data computer that are used to process data Storage Records (writes) and/or retrieves (reads) items to and
Storage
- Records (writes) and/or retrieves (reads) items to and
- from storage media from storage media
Device Device
Enables a computer to send and receive data,
- Enables a computer to send and receive data,
- Communicati
Communicati
instructions, and information to and from one or more instructions, and information to and from one or more ons Device ons Device computers or mobile devices computers or mobile devices
Pages 6 - 8 Discovering Computers 2012: Chapter 1
The Components of a Computer
Page 7 Discovering Computers 2012: Chapter 1
Advantages and Disadvantages of Using Computers Advantages of Disadvantages of
Using Computers Using Computers
Health RisksSpeed Speed
Health Risks Violation of Privacy
Reliability Violation of Privacy
Reliability Public Safety
Consistency Public Safety
Consistency Impact on Labor Impact on Labor
Storage Storage
Force Force
Impact on Impact on
Communications Communications
Environment
Environment
Pages 9 - 10 Discovering Computers 2012: 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
Discovering Computers 2012: Chapter 1 Page 10
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
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 2012: Chapter 1 Page 11
Networks and the Internet
People use the Internet for a variety of
reasons:
Communicate Research and Shop Bank and Online Access Invest Trading Information Entertainmen Download Share Web t Videos Information Application
Pages 12 - 13 Discovering Computers 2012: 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
Discovering Computers 2012: Chapter 1 Page 14
Computer Software
- Software , also called a program , tells
the computer what tasks to perform and how to perform them
System Software
System Software
Operating system
- Operating system
- Utility program
- Utility program
- Application Software
Application Software
Pages 15 - 16 Discovering Computers 2012: Chapter 1
Computer Software
Installing is the process of setting up
software to work with the computer, printer, and other hardware
Pages 16 - 17 Discovering Computers 2012: Chapter 1
Computer Software
- A programmer develops software or writes the instructions that direct the computer to process data into information
Page 18
Categories of Computers
Embedded computers
Embedded computers
Supercomputers
Supercomputers
Mainframes
Mainframes
Servers
Servers
Game consoles
Game consoles
Mobile computers and mobile devices
Mobile computers and mobile devices
Personal computers
Personal computers
Discovering Computers 2012: Chapter 1 Page 19
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
Discovering Computers 2012: Chapter 1 Pages 19 - 20
Mobile Computers and Mobile Devices
Mobile Device Mobile Device
Personal computer you can carry from place to place Personal computer you can carry from place to place Examples include notebook computers, laptop computers, netbooks, ultra- thins, and Tablet PCs Examples include notebook computers, laptop computers, netbooks, ultra- thins, and Tablet
Computing device small enough to hold in your hand Computing device small enough to hold in your hand Examples include smart phones and PDAs, e-book readers, handheld computers, portable media players, and digital cameras Examples include smart phones and PDAs, e-book readers, handheld computers, portable media players, and digital cameras
PCs Mobile Compu ter Mobile Compu ter
Discovering Computers 2012: Chapter 1 Pages 20 - 23
Mobile Computers and Mobile Devices
Notebook computer Notebook computer
Tablet PC Tablet PC
Smart phones and Smart phones and
PDAs PDAs
E-book reader E-book reader
Pages 20 - 22 Discovering Computers 2012: Chapter 1
Mobile Computers and Mobile Devices
Handheld computer Handheld computer
Portable media player Portable media player
Digital camera Digital camera
Discovering Computers 2012: Chapter 1 Pages 22 - 23
Game Consoles
- A game console is a mobile computing device designed for single-player or multiplayer video games
Page 24
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
Page 25
Mainframes
- A mainframe is a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously
Page 25
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 2012: Chapter 1 Page 25
Embedded Computers
An embedded computer is a special-
purpose computer that functions as a component in a larger product
Discovering Computers 2012: Chapter 1 Page 26
Embedded Computers
Page 26 Discovering Computers 2012: Chapter 1
Elements of an Information System
Page 27 Discovering Computers 2012: Chapter 1
Elements of an Information System
Page 27 Discovering Computers 2012: Chapter 1
Examples of Computer Usage
Pages 28 – 31 Discovering Computers 2012: Chapter 1
Examples of Computer Usage
Pages 31 – 32 Discovering Computers 2012: Chapter 1
Computer Applications in Society
Pages 34 - 36 Discovering Computers 2012: Chapter 1
Computer Applications in Society
Pages 36 - 38 Discovering Computers 2012: Chapter 1
Video: Computer History in a Barn
Discovering Computers 2012: Chapter 1
Summary
Page 39 Discovering Computers 2012: Chapter 1
Your Interactive Guide to the Digital World Discovering
Computers 2012