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
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
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
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
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