COMPUTERS
- An electronic device, operating under the control of instructions stored in its own memory
DATA AND INFORMATION
- Keyboards
- Pointing device
- Scanner
- Printer
- Outputs device
- Speakers
- Display
- 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)
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
PROGRAM AND APPS
- Software tells the computer what tasks to perform and how to perform them
- System Software
-Operating system (Windows, Mac OS)
-Utility program (antivirus,firewall)
- Application Software
Example: Word, Excel
- Installing is the process of setting up software to work with the computer, printer, and other hardware
- A software developer issomeone who develops programs and apps or writes the instructions that direct the computer or mobile device to process data into information
COMMUNICATION AND NETWORK
- A communications device is hardware capable of transferring items from computers and devices to transmission media and vice versa
- A network is a collection of computers and devices connected together via communications devices and transmission media
THE INTERNET
- The Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions and individuals
CONNECTING TO THE INTERNET
- With wired connections, a computer or device physically attaches via a cable or wire to a communications device
- Computers without a communications device can use a wireless modem
- Wired
-Cable Internet service
-DSL (digital subscriber line)
-Fiber to the Premises (FTTP)
- Wireless
-Wi-Fi (wireless fidelity)
-Mobile broadband
-Fixed wireless
-Satellite Internet Service
- A hot spot is a wireless network that provides Internet connections to mobile computers and devices
- An Internet service provider (ISP) is a business that provides individuals and organizations access to the Internet free or for a fee. (Unifi,TM,Celcom)
- Bandwidth represents the amount of data that travels over a network
-Gigabyte (GB)
- An IP address is a sequence of numbers that uniquely identifies each computer or device connected to the Internet
- A domain name is a text-based name that corresponds to the IP address
- A DNS server translates the domain name into its associated IP address
THE WORLD WIDE 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 the computer
- A browser is software that enables users with an Internet connection to access and view webpages on a computer or mobile device
- A home page is the first page that a website displays
- Desktop browsers typically support tabbed browsing
- A webpage has a unique address called a web address or URL
- A web app is an application stored on a web server that has been access through a browser.
- A search engine is software that finds websites, webpages, images, videos, news, maps, and other information related to a specific topic.
- Web publishing is the development and maintenance of websites
- An online social network encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users
-Example: Facebook, Instagram
MEDIA ON THE WEB
- A graphic is a digital representation of non-text information
- An infographic is a visual representation of data and information, designed to communicate quickly, simplify complex concepts, or present patterns or trends
- Animation is the appearance of motion created by displaying a series of still images in sequence
- Video consists of images displayed in motion
- Virtual reality (VR) is the use of computers to simulate a real or imagined environment that appears as a three-dimensional space
- A plug-in is a program that extends the capability of a Web browser
OTHER INTERNET SERVICE
- Email is the transmission of messages and files via a computer network
- An email program allows you to create, send, receive, forward, store, print, and delete email messages
- Instant messaging (IM) is a real-time Internet communications service
- A chat is a real-time typed conversation that takes place on a computer or mobile device
- A chat room is a website or application that permits users to chat with others who are online at the same time
- A 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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