A world of technology
Digital literacy involves having a current knowledge and understanding of computers, mobile
devices, the Internet, and related technologies.
devices, the Internet, and related technologies.
Computers is an electronic device, operating under the control of instructions stored in its own
memory
memory
eg: Laptop, tablet,desktop,server
Mobile games and devices
eg: smart phones, digital camera, portable media player, e-book reader, game console
l Data and information
Data (input), storage and processing, information(output)
Keyboard- contains keys you press to enter data and instructions into a computer or mobile device
A pointer- pointing device is an input device that allows a user to control a small symbol on the
screen
screen
Voice input- enable you to speak data instructions
Video input-to capture live full-motion images
A scanner- light-sensing input device that converts printed text and images into a form the computer can process
Output device- is any hardware component that conveys information from a computer or mobile
device to one or more people
device to one or more people
Eg : - A printer (produces text and graphics on a physical medium such as paper)
-A display (visually conveys text, graphics, and video information)
-Speakers (allow you to hear audio such as music, voice, and other sounds using earbuds or
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)
Types of storage device: Hard Disk, Solid-State Drive, USB Flash Drive, Memory Card, Optical Disc, Cloud Storage
l Internet
Worldwide collection of networks that connects millions of businesses, government agencies,
educational institutions, and individuals
educational institutions, and individuals
World Wide Web (or web or www) -global library of information available to anyone connected to the Internet
Web-consists of a worldwide collection of electronic documents, each of which is called a webpage
Website-collection of related webpages
Web server-computer that delivers requested webpages to your computer
Browser
software that enables users with an Internet connection to access and view webpages on a computer
or mobile device
or mobile device
Eg: Google Chrome, Mozilla Firefox, Internet Explorer
Search Engine
software that finds websites, webpages, images, videos, news, maps, and other information related to a specific topic.
Eg: Google , Yahoo , Bing
Online Social
network encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users
Eg: Instagram, Facebook, Twitter
l Digital Safety And Security
Important that users protect their computers and mobile devices from :-
Ø Viruses and Other Malware
Ø Privacy
Ø Health Concerns
Ø Environmental Issues
Green computing
Involves reducing the electricity consumed and environmental waste generated when using a
computer
computer
Strategies include:
Ø Recycling
Ø Using energy efficient hardware and energy saving features
Ø Regulating manufacturing processes
Ø Extending the life of computers
Ø Immediately donating or properly disposing of replaced computers
l Programmes And Apps
Software (Program)
tells the computer what tasks to perform and how to perform them
Ø System Software -operating system ((Windows, Mac OS)
- utility system (antivirus, firewall)
Ø Application Software-(word, excel,ppt)
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
A software developer (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
mobile device to process data into information
l Communications and Networks
This day information generated by, one or more of these communications technologies
Eg: Chat room, Email, fax, FTP, GPS,instant messaging, Internet, newsgroup, RSS and more.
Communications device
Hardware capable of transferring items from computers and devices to transmission media and vice
versa.
versa.
Wireless communication technologies
Eg: bluetooth, Wi-fi, Cellular radio
Network
a collection of computers and devices connected together via communications devices and
transmission media
transmission media
Home network
n Connect to the Internet
n Share a single high-speed Internet connection
n Access photos, music, videos, and other content
n Share devices
n Play multiplayer games
n Connect game consoles to the Internet
n Subscribe to and use VoIP
|
Business network
n Facilitate communications
n Share hardware
n Share data, information, and software
|
l Uses of Technology in Society
i. Education
ii. Science
iii. Finance
iv. Government
v. Retail
vi. Entertainment
vii. Health care
viii. Travel
ix. Publishing
x. Manufacturing
l Technology Users
i. Home user
ii. Small/home office user
iii. Mobile user
iv. Power user
v. Enterprise user
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