CHAPTER 1&2 : DIGITAL LITERACY & THE INTERNET

Digital literacy involves having a current knowledge and understanding of computers, mobile devices, the Internet, and related technologies

11 OBJECTIVES IN THIS CHAPTER

1.      Differentiate among laptops, tablets, and servers

2.      Describe the purpose and uses of smartphones, digital cameras, portable media players, E-book readers, and game devices

3.      Describe the relationship between data and information

4.      Briefly explain various input options

5.      Differentiate the Internet from the web, and describe the relationship among the web, webpages, websites, and web servers

6.      Explain the purpose of a browser, a search engine, and an online social network

7.      Briefly describe digital security risks associated with viruses and other malware, privacy, your health, and the environment

8.      Differentiate between an operating system and applications

9.      Differentiate between wired and wireless technologies, and identify reasons individuals and businesses use networks

10.  Discuss how society uses technology in education, retail, finance, entertainment, health care, travel, government, science, publishing, and manufacturing

11.  Identify technology used by home users, small office/home office users, mobile users, power users, and enterprise users

Digital literacy

1.      A computer is an electronic device, operating under the control of instructions stored in its own memory

1.Function of computer is accept data(input) after that processing the data and produced information to user (output)

2.      Mobile and Game Devices such as smartphone, digital camera, portable media player, E-book reader and game console.

3.      Data and information function is storage and processing the date and give information to the users examples:

a)      Keyboard contains keys you press to enter data and instructions into a computer or mobile device.

b)      Mouse or touchpad a pointing device is an input device that allows a user to control a small symbol on the screen called a pointer.

b)Some mobile devices and computers have voiceover enable users to speak data instructions using voice input and to capture live full-motion images using video input.

c)      A scanner is a light-sensing input device that converts printed text and images into a form the computer can process.

d)     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

e)      A display is an output device that visually conveys text, graphics, and video information

f)       Speakers allow you to hear audio such as music, voice, and other sounds such as earbuds and headphones

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 a storage media (CD/DVD). A storage device records (writes) and/or retrieves (reads) items to and from storage media (CD/DVD drive). The data can be keep in the hard disk, solid-state drive, USB flash drive, memory card, optical disc and

cloud storage.

1.      The Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals.

INTERNET

DIGITAL SAFETY AND SECURITY

Green computing involves reducing the electricity consumed and environmental waste generated when using a computer

Strategies include:

1.      Recycling

2.      Using energy efficient hardware and energy saving features

3.      Regulating manufacturing processes

4.      Extending the life of computers

5.      Immediately donating or properly disposing of replaced computers

5.

PROGRAMS AND APPS

Software, also called a program, tells the computer what tasks to perform and how to perform them.

System Software:

1.      Operating system (Windows, Mac OS)

2.      Utility program (antivirus,firewall)

Application Software:

1.      (word, excel,ppt)

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

COMMUNICATIONS AND NETWORKS

1.      A communications device is hardware capable of transferring items from computers and devices to transmission media and vice versa. Examples of wireless communications technologies include:

2.      A network is a collection of computers and devices connected together via communications devices and transmission media

Home Networks	Business Networks
Connect to the Internet	Facilitate communications
Share a single high-speed Internet connection	Share hardware
Access photos, music, videos, and other content	Share data, information, and software
Share devices
Play multiplayer games
Connect game consoles to the Internet
Subscribe to and use VoIP

USES OF TECHNOLOGY IN SOCIETY

TECHNOLOGY USERS

1.      Home user

2.      Small/ home office user

3.      Mobile user

4.      Power user

5.      Enterprise user

CHAPTER 2: THE INTERNET

11 OBJECTIVES IN THIS CHAPTER

1.      Discuss the evolution of the Internet.

2.      Briefly describe various broadband Internet connections.

3.      Describe the purpose of an IP address and its relationship to a domain name.

4.      Describe features of browsers and identify the components of a web address.

5.      Describe ways to enter effective search text.

6.      Explain benefits and risks of using social networking sites.

7.      Describe uses of various types of websites.

8.      Identify and briefly describe the steps required for web publishing.

9.      Explain how the web uses graphics, animation, audio, video, and virtual reality.

10.  Explain how the web uses graphics, animation, audio, video, and virtual reality.

11.  Identify the rules of netiquette.

TWO MAIN GOAL OF INTERNET

1.      Allow scientists at different physical locations to share information and work together

2.      Function even if part of the network were disabled or destroyed by a disaster

Two ways to connect computer or devices to the internet

1.      Wired connection example

·         Cable Internet service

·         DSL (digital subscriber line)

·         Fiber to the Premises (FTTP)

2.      Wireless modem

·         Wi-Fi (wireless fidelity)

·         Mobile broadband

·         Fixed wireless

·         Satellite Internet Service

STEP BY STEP OF A BROWSER DISPLAYS A REQUESTED WEBPAGE

THE WORLD WIDE WEB

A WEBPAGE HAS A UNIQUE ADDRESS CALLED A WEB ADDRESS OR URL

http:// - protocol

www. – hostname

nps.gov/ - domain name

history/ - path

places.htm – webpage name

So combined them we can get web address

http://www.nps.gov/history/places.htm

TYPE OF WEBSITES

There are 16 types of websites

1.      Online social network

2.      Informational

3.      Media sharing and bookmarking sites

4.      News, weather, sports, and other mass media

5.      Educational

6.      Business, Governmental, and Organizational

7.      Blogs

8.      Wikis

9.      Health and Science

10.  Entertainment

11.  Financial

12.  Travel and Mapping

13.  Shopping and Auctions

14.  Careers and Employment

15.  E-Commerce

16.  Portals

WEB PUBLISHING IS THE DEVELOPMENT AND MAINTENANCE OF WEBSITES

OTHER INTERNET SERVICES

How an email message may travel from a sender to a receiver

·         Instant messaging (IM) is a real-time Internet communications service.

·         Discussion forum is an online area in which users have written discussions about a particular subject

·         VoIP (Voice over IP) enables users to speak to other users over the Internet (viber, whatapp, skype)

·         FTP (File Transfer Protocol) is an Internet standard that permits file uploading and downloading to and from other computers on the Internet

·         Netiquette is the code of acceptable Internet behavior