Chapter 1 Digital Literacy
Digital literacy involves having a current knowledge and understanding of computers,mobile devices, the Internet, and related technologies
Computers- an electronic device, operating under the control of instructions stored in its own memory.
Function
1. Accepts data (input)
2. Processing
3. Produces information (output)
Types
1) Laptop
2) Tablet
3) Desktop
4) Server
Data and InformationInput
1. keyboard contains keys you press to enter data and instructions into a computer or mobile device
2. pointing device is an input device that allows a user to control a small symbol on the screen called a pointer
3. Some computers enable you to speak data instructions using voice input and to capture live full-motion images using video input
4. scanner is a light sensing input device that converts printed text and images into a form the computer can process
Output
1. printer is an output device that produces text and graphics on a physical medium
2. display is an output device that visually conveys text, graphics, and video information
3. Speakers allow you to hear audio
Ø Memory consists of electronic components that store instructions waiting to be executed and the data needed by those instructions
Ø -computer keeps data, instructions, and information on a storage media (CD/DVD)
Ø storage device records (writes) and/or retrieves (reads) items to and from storage media (CD/DVD drive)
The Internetworldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals
World Wide Web
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global library of information available to anyone connected to the Internet
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Webpage
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worldwide collection of electronic documents
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Website
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collection of related webpages
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Web Server
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computer that delivers requested webpages to your computer
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Browser
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software that enables users with an Internet connection to access and view webpages on a computer or mobile device. (chrome,firefox,ie)
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Search Engine
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software that finds websites, webpages, images, videos, news, maps, and other information related to a specific topic. (google, yahoo)
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Online Social Network
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encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users (fb, instagram, twitter)
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Digital Safety and SecurityBeware of;
1. Viruses and Other Malware
2. Privacy
3. Health Concerns
4. Environmental Issues
Programs And Apps
Ø Software tells the computer what tasks to perform and how to perform them
Ø 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
Communication And Hardware
Øcommunications device is hardware capable of transferring items from computers and devices to transmission media and vice versa
Ø Wifi,bluetooh,cellular radio
Ø network is a collection of computers and devices connected together via communications devices and transmission media
Home Network
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Business Network
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l Connect to the Internet
l Share a single high-speed Internet connection
l Access photos, music, videos, and other content
l Share devices
l Play multiplayer games
l Connect game consoles to the Internet
l Subscribe to and use VoIP
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l Facilitate communications
l Share hardware
l Share data, information, and software
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Uses of Technology in Society
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