Adware - Advertising program often installed along with other programs
Attachment - A file attached to an e-mail message for sending between computers
Blog - Web log. Personal web page where the author can post their views and experiences and receive comments.
BMP - Bitmap. The most common graphics file type for Windows PCs
Bookmarks - List of your favourite web sites
Browser - Software that displays web pages such as Internet Explorer and Firefox
Compression - A method of reducing the storage space a file takes up. Files must be decompressed to be used again
Cookie -Data that tracks visits to web sites and remembers user preferences
Crash - Occurs when a program causes your computer to stop responding
Demo - Free demonstration version of software that allows you to try before you buy
Directory - An index of web site links arranged in categories
Disk Space - The size of the area on the hard disk where files can be stored
Domain name - URL or Address of a web site on the Internet
Download - Transfer a file from another computer to your own
Driver - Software required for Windows to use a piece of hardware such as a graphics card
E-mail - Electronic mail passed between computers
Favourites - List of your favourite web sites
Firewall - Program or device that blocks or allows Internet access to a network or a PC
Flash - Software to create and play web site animations
Font - Text of a particular size and style
Freeware - Software that is free to download and use for as long as you like
Hardware - Physical parts of a computer system such as the hard disk, keyboard and printer
HTML - Hypertext Mark-up Language. The code that makes up a web page
Home Page - The main page of a web site, often a welcome page
Hyperlink - A text or graphic you click on to go to another page or a different web site
Internet - A collection of inter-connected computer networks
Install - To load and copy program files onto a computer
JPG / JPEG - Compressed graphics file for sending across the Internet
Link - A text or graphic you click on to go to another page or a different web site
Malware - Malicious software such as virus or spyware programs
Modem - Device that links a computer to the Internet through a telephone line
MP3 - Compressed audio file to save disk space and for transfer across the Internet
Netiquette - Acceptable behaviour online
Online - Connected to the Internet
Phishing - Fraudulent e-mails and web sites trying to trick you into giving out personal details
Plug-in - Extra programs that can be installed into larger programs to handle special tasks, such as playing certain types of movie files in a browser
Podcast - Internet audio broadcast that can be played back on PCs or MP3 players such as the iPod.
Pop-Up - Small window that appears on a web page, often used for advertisements.
Program - A set of instructions to make a computer carry out a task
Root kit - Software that hides system files and can allow attackers to access your computer undetected
Router - Device used in home Internet networks to send data from the web to specific computers
RSS - Really Simple Syndication - a system to feed you news stories from web sites
Search Engine - Tool that searches the Web for keywords and provides relevant links
Server - A computer that holds Internet data such as web site files and can send it to another computer when requested
Shareware - Software that is free to download but you pay a fee if you want to continue using it after the trial period
Shortcut - A link you can click to go straight to a particular program or web page
Social Networking - Web sites based on communication and relying on users to add content
Software - A program or a set of instructions to make a computer carry out a task
Spam - Junk mail messages to e-mail addresses
Spyware - Software that tracks your movements on the Web for advertising purposes without your knowledge
Stream - Start playing music or video as soon as it begins downloading
Surfing - Moving from one web page to another
Trial - Software that allows you to try before you buy
Trojan - Malicious virus program disguised as useful software
Uninstall - Remove program files from a computer
Upload - Send a file from your computer to an online destination
URL - Uniform Resource Locator. The address of a web site on the World Wide Web
Virus - Destructive program that infects and damages computer files
Vlog - Video web log
VoIP - Voice over Internet Protocol - voice conversations across the Internet
WAV - The standard audio file type for Windows PCs
Web Page - Individual page on a web site
Web Site - A collection of connected web pages located at a particular domain name
Wiki - Web site that can be edited by users to add information
Windows - Microsoft operating system installed on most PCs
World Wide Web (WWW) - Information space on the Internet stored on servers across the world containing documents connected together through hyperlinks
Worm - Malicious code that uses an infected PC to spread itself to others
Zip - Compressed file format to reduce disk space needed by a file and to transfer it between computers more quickly