Discovering Computers Technology in a World of Computers,
Discovering Computers Technology in a World of Computers, Mobile Devices, and the Internet Chapter 1 Digital Literacy Objectives Overview Differentiate among laptops, tablets, and servers Describe the purpose and uses of smartphones, digital
cameras, portable media players, e-book readers, and game devices Describe the relationship between data and information Briefly explain various input options Differentiate the Internet from the web, and describe the relationship among the
web, webpages, websites, and web servers Explain the purpose of a browser, a search engine, and an online social network See Page 2 for Detailed Objectives Discovering Computers: Chapter 1 2
Objectives Overview Briefly describe digital security risks associated with viruses and other malware, privacy, your health, and the environment Differentiate between an operating system and applications Discuss how society uses
technology in education, retail, finance, entertainment, health care, travel, government, science, publishing, and manufacturing See Page 2 for Detailed Objectives Differentiate between wired and wireless technologies, and identify reasons individuals and businesses use networks
Identify technology used by home users, small office/home office users, mobile users, power users, and enterprise users Discovering Computers: Chapter 1 3 A World of Technology Because technology changes, you must keep up with the changes to
remain digitally literate Digital literacy involves having a current knowledge and understanding of computers, mobile devices, the Internet, and related technologies Pages 2 - 3 Figure 1-1 Discovering Computers: Chapter 1 4
Computers A computer is an electronic device, operating under the control of instructions stored in its own memory Accepts data (input) Page 4 Processing Produces
informatio n (output) Discovering Computers: Chapter 1 5 Computers Laptop
Tablet Desktop Server Pages 4 and 6 Figures 1-2 1-5 Discovering Computers: Chapter 1 6 Mobile and Game Devices Smartphone Digital camera
Portable media player E-book reader Game console Pages 7 - 9 Figures 1-6 1-10 Discovering Computers: Chapter 1 7 Data and Information Page 11 Figure 1-11
Discovering Computers: Chapter 1 8 Data and Information A keyboard contains keys you press to enter data and instructions into a computer or mobile device Page 12
Figure 1-12 Discovering Computers: Chapter 1 9 Data and Information A pointing device is an input device that allows a user to control a small symbol on the screen called a pointer Some mobile devices and computers enable you to speak data instructions using voice input and to capture live full-motion images using video input
Pages 12 13 Figure 1-14 Discovering Computers: Chapter 1 10 Data and Information A scanner is a light-sensing input device that converts printed text and images into a form the computer can process Page 13
Figure 1-15 Discovering Computers: Chapter 1 11 Data and Information An output device is any hardware component that conveys information from a computer or mobile device to one or more people A printer is an output device that produces text and graphics on a physical medium such as paper Page 14
Figure 1-16 Discovering Computers: Chapter 1 12 Data and Information A display is an output device that visually conveys text, graphics, and video information Page 14 Figure 1-17 Discovering Computers: Chapter 1
13 Data and Information Speakers allow you to hear audio such as music, voice, and other sounds Earbuds Headphones Page 15 Figure 1-18 Discovering Computers: Chapter 1
14 Data and Information Page 15 Discovering Computers: Chapter 1 15 Data and Information Pages 15 17 Figures 1-19 1-24
Discovering Computers: Chapter 1 16 The Internet The Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals Pages 18 19 Figure 1-25 Discovering Computers: Chapter 1
17 The Internet Pages 19 - 20 Discovering Computers: Chapter 1 18 The Internet Page 19
Figure 1-26 Discovering Computers: Chapter 1 19 The Internet A browser is software that enables users with an Internet connection to access and view webpages on a computer or mobile device Page 20 Discovering Computers: Chapter 1
20 The Internet A search engine is software that finds websites, webpages, images, videos, news, maps, and other information related to a specific topic Page 21 Discovering Computers: Chapter 1 21
The Internet An online social network encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users Pages 21 22 Figure 1-27 Discovering Computers: Chapter 1 22 Digital Safety and Security It is important that users protect their computers
and mobile devices Pages 23 - 24 Discovering Computers: Chapter 1 23 Digital Safety and Security Green computing involves reducing the electricity consumed and environmental waste generated when using a computer Strategies include:
Page 25 Recycling Using energy efficient hardware and energy saving features Regulating manufacturing processes Extending the life of computers Immediately donating or properly disposing of replaced computers Discovering Computers: Chapter 1
24 Programs and Apps Software, also called a program, tells the computer what tasks to perform and how to perform them Pages 25 - 26 Figure 1-28 Discovering Computers: Chapter 1 25
Programs and Apps Installing is the process of setting up software to work with the computer, printer, and other hardware Once installed, you can run an application so that you can interact with it You interact with a program or application through its user interface Page 27 Discovering Computers: Chapter 1
26 Programs and Apps A software developer, sometimes called an application developer or computer programmer, is someone who develops programs and apps or writes the instructions that direct the computer or mobile device to process data into information Page 28 Figure 1-29 Discovering Computers: Chapter 1
27 Communications and Networks In the course of a day, it is likely you use, or use information generated by, one or more of these communications technologies Page 29 Discovering Computers: Chapter 1 28 Communications and Networks
A communications device is hardware capable of transferring items from computers and devices to transmission media and vice versa Page 29 Figure 1-30 Discovering Computers: Chapter 1 29 Communications and Networks Examples of wireless communications technologies include:
Page 30 Discovering Computers: Chapter 1 30 Communications and Networks A network is a collection of computers and devices connected together via communications devices and transmission media Pages 30 31 Figure 1-31
Discovering Computers: Chapter 1 31 Communications and Networks Page 31 Discovering Computers: Chapter 1 32 Uses of Technology in Society
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