Discovering Computers 2018 PDF

Discovering Computers 2018 Digital Technology, Data and Devices Chapter 1 Introducing Today’s Technologies Objectives Overview Describe the purpose and uses of smartphones, digital Differentiate among...

Discovering Computers 2018 Digital Technology, Data and Devices Chapter 1 Introducing Today’s Technologies Objectives Overview Describe the purpose and uses of smartphones, digital Differentiate among Describe the relationship cameras, portable and laptops, tablets, desktops, between data and digital media players, e- and servers information book readers, wearable devices, and game devices Differentiate the web from Explain the purpose of a the Internet, and describe Briefly explain various input browser, a search engine, the relationship among the options and an online social web, webpages, websites, network and web servers See Page 2 2 for Detailed Objectives Objectives Overview Briefly describe digital Differentiate between wired security risks associated Differentiate between an and wireless technologies, with viruses and other operating system and and identify reasons malware, privacy, your applications individuals and businesses health, and the use networks environment Discuss how society uses Identify technology used by technology in education, home users, small/home government, finance, retail, office users, mobile users, entertainment, health care, power users, and enterprise science, travel, publishing, users and manufacturing See Page 2 3 for Detailed Objectives Today’s 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 web, and related technologies Pages 2 - 3 4 Figure 1-1 Computers A computer is an electronic device, operating under the control of instructions stored in its own memory Accepts Produces data Processing information (input) (output) Page 4 5 Computers Laptop Tablet Desktop and All-in-One Server Pages 4 and 6 6 Figures 1-2 – 1-5 7 Mobile and Game Devices Smartphone Digital camera Portable and digital media player E-book reader Wearable device Game device Pages 7 - 10 8 Figures 1-6 – 1-11 Data and Information Page 12 9 Figure 1-12 Data and Information A keyboard contains keys you press to enter data and instructions into a computer or mobile device Page 13 10 Figure 1-13 Data and Information A pointing device is an input device that allows a user to control a small symbol on the screen called the 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 13 – 14 11 Figures 1-14 – 1-15 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 14 12 Figure 1-16 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 or other material – A 3-D printer can print solid objects, such as clothing, prosthetics, eyewear, implants, toys, parts, prototypes, and more Pages 14 - 15 13 Data and Information Page 15 14 Figure 1-17 Data and Information A display is an output device that visually conveys text, graphics, and video information Page 15 15 Figure 1-18 Data and Information Speakers allow you to hear audio such as music, voice, and other sounds – Earbuds – Headphones Page 16 16 Figure 1-19 Data and Information Memory consists of electronic components that store instructions waiting to be executed and the data needed by those instructions A computer keeps data, instructions, and information on storage media A storage device records (writes) and/or retrieves (reads) items to and from storage media Pages 16 - 17 17 Data and Information Hard Disk Solid-State USB Flash Drive Drive Memory Card Optical Disc Cloud Storage Pages 17 – 19 18 Figures 1-20 – 1-26 The Web The Internet is a worldwide collection of computer networks that connects millions of businesses, government agencies, educational institutions, and individuals Page 20 19 Figure 1-27 The Web The World Wide Web (or web, for short) is a global library of information available to anyone connected to the Internet The web consists of a worldwide collection of electronic documents, each of which is called a webpage A website is a collection of related webpages A web server is a computer that delivers requested webpages to your computer Pages 20 – 21 20 The Web Page 19 21 Figure 1-26 The Web A browser is software that enables users with an Internet connection to access and view webpages on a computer or mobile device Page 21 22 The Web A search engine is software that finds websites, webpages, images, videos, news, maps, and other information related to a specific topic Page 22 23 The Web An online social network encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users Page 23 24 Figure 1-29 Digital Safety and Security It is important that users protect their computers and mobile devices Viruses and Other Privacy Malware Health Environmental Concerns Issues Pages 24 - 26 25 Digital Safety and Security Green computing involves reducing the electricity consumed and environmental waste generated when using a computer Strategies include: – 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 Page 26 26 Programs and Apps Software, also called a program, tells the computer what tasks to perform and how to perform them System Software Operating system Tools Applications Pages 26 - 27 27 Figure 1-30 28 29 Programs and Apps Installing a program is the process of setting up the program to work with the computer, mobile device, printer, and/or other hardware Once installed, you can run a program so that you can interact with it You interact with a program through its user interface Pages 28 - 29 30 Programs and Apps A software developer, sometimes called a developer or programmer, is someone who develops programs and apps or writes the instructions that direct the computer or mobile device to process data into information Pages 29 - 30 31 Figure 1-31 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 Chat rooms Email Fax FTP GPS Instant Internet Newsgroups RSS Videoconference messaging Wireless Wireless Voice mail VoIP Internet access messaging points services Pages 30 - 31 32 33 Communications and Networks A communications device is hardware capable of transferring items from computers and devices to transmission media and vice versa Page 31 34 Figure 1-32 Communications and Networks Examples of wireless communications technologies include: Wi-Fi Bluetooth Cellular radio Pages 31 - 32 35 Communications and Networks A network is a collection of computers and devices connected together, often wirelessly, via communications devices and transmission media Page 32 36 Figure 1-33 Communications and Networks Home Networks Business Networks Connect to the Internet Facilitate communications Share a single high-speed Share hardware Internet connection Share data, information, and Access photos, music, videos, and software other content Share devices Play multiplayer games Connect game consoles to the Internet Subscribe to and use VoIP Interact with other devices in a smart home Page 33 37 Technology Uses Education Government Finance Retail Entertainment Health Care Science Travel Publishing Manufacturing Pages 35 - 41 38 Technology Users Home User Small/Home Mobile User Office User Power User Enterprise User Pages 41 - 42 39 40 Chapter Summary Various methods Basic computer for input, output, The Internet concepts memory, and storage Digital security and Uses of technology safety risks and applications in precautions society Page 43 41 Discovering Computers 2018 Digital Technology, Data and Devices Chapter 1 Introducing Today’s Technologies Chapter 1 Complete