1. A World of Computers
1.1. Computers are everywhere.
2. What Is a Computer?
2.1. A computeris an electronic device, operating under the control of instructions stored in its own memory.
3. The Components of a Computer
3.1. Input Device
3.1.1. Web cam
3.2. Output Device
3.2.1. Printer
3.3. System Units
3.3.1. Process memmory
3.4. storage Device
3.4.1. Card reader
3.5. Communications Device
3.5.1. Modem
4. Advantages and Disadvantages of Using Computers
4.1. Advantages of Using Computers
4.1.1. Speed
4.1.2. Reliability
4.1.3. Consistency
4.1.4. Storage
4.1.5. Communications
4.2. Disadvantages of Using Computers
4.2.1. Health Risks
4.2.2. Violation of Privacy
4.2.3. Public Safety
4.2.4. Impact on Labor Force
4.2.5. Impact on Environment
5. Categories of Computers
5.1. Personal computers
5.1.1. A personal computercan perform all of its input, processing, output, and storage activities by itself.
5.1.2. Two popular architectures are the PC and the Apple
5.1.2.1. Desktop computer
5.2. Mobile computers and mobile devices
5.2.1. Mobile Computer
5.2.1.1. Personal computer you can carry from place to place
5.2.1.1.1. Notebook computer
5.2.2. Mobile Device
5.2.2.1. Computing device small enough to hold in your hand
5.2.2.1.1. PDA
5.3. Game consoles
5.3.1. A game consoleis a mobile computing device designed for single‐player or multiplayer video games.
5.4. Servers
5.4.1. A servercontrols access to the hardware, software, and other resources on a network.
5.4.1.1. Provides a centralized storage area for programs, data, and information.
5.5. Mainframes
5.5.1. A mainframeis a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously.
5.6. Supercomputers
5.6.1. A supercomputeris the fastest, most powerful computer
5.6.1.1. Fastest supercomputers are capable of processing more than one quadrillion instructions in a single second.
5.7. Embedded computers
5.7.1. An embedded computeris a special‐purpose computer that functions as a component in a larger product
5.7.1.1. Consumer Electronics
5.7.1.1.1. Mobile and digital telephones
5.7.1.2. Home Automation Devices
5.7.1.2.1. Thermostats
5.7.1.3. Automobiles
5.7.1.3.1. Antilock brakes
5.7.1.4. Process Controllers and Robotics
5.7.1.4.1. Remote monitoring systems
5.7.1.5. Computer Devices and Office Machines
5.7.1.5.1. Keyboards
6. Examples of Computer Usage
6.1. Home User
6.1.1. Personal financial management
6.1.2. Communications
6.2. Small Office/Home Office User
6.2.1. Look up information
6.2.2. Send and receive e‐mail messages
6.3. Mobile User
6.3.1. Connect to other computers on a network or the Internet
6.3.2. Transfer information
6.4. Power User
6.4.1. Work with multimedia
6.4.2. Use industry‐specific software
6.5. Enterprise User
6.5.1. Communicate among employees
6.5.2. Process high volumes of transactions
7. Computer Applications in Society
7.1. Education
7.2. Finance
7.3. Government
7.4. Health Care
7.5. Science
7.6. Publishing
7.7. Travel
7.8. Manufacturing
8. Objectives Overview
8.1. Explain why computer literacy is vital to success in today’s world.
8.2. Define the term, computer, and describe the relationship between data and information.
8.3. Describe the five components of a computer.
8.4. Discuss the advantages and disadvantages that users experience when working with computers.
8.5. Define the term, network, and identify benefits of sharing resources on a network.
8.6. Discuss the uses of the Internet and World Wide Web.
8.7. Distinguish between system software and application software.
8.8. Differentiate among types, sizes, and functions of computers in each category.
8.9. Describe the role of each element in an information system.
8.10. Explain how home users, small office/home office users, mobile users, power users, and enterprise users each interact with computers.
8.11. Discuss how society uses computers in education, finance, government, health care, science, publishing, travel, and manufacturing.
9. Networks and the Internet
9.1. A networkis a collection of computers and devices connected together, often wirelessly, via communications devices and transmission media.
9.2. The Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals.
9.3. People use the Internet for a variety of reasons:
9.3.1. Research and Access Information
9.3.2. Communicate
9.3.3. Shop
9.3.4. Bank and Invest
9.3.5. Online Trading
9.3.6. Entertainment
9.3.7. Download Music
9.3.8. Share Videos
9.3.9. Web Application
10. Computer Software
10.1. Software, also called a program, tells the computer what tasks to perform and how to perform them
10.1.1. System Software
10.1.1.1. Operating system
10.1.1.2. Utility program
10.1.2. Application Software