| Account | User's personal admittance into different Internet systems. Any account as usual supposes to have a user name and a password. |
| Active content | Web pages that contain links to different applications being loaded and activated by web browsers automatically |
| AI | Artificial Intelligence |
| ANSI | American National Standards Institute |
| API | Application Programming Interface |
| Archive | A disk, tape, or directory that contains files that have been backed up. A file containing crunched files. To compress a file usually such software as ZIP, RAR, ARJ is used. A file composed of several files with the help of special software such as TAR etc. |
| ASP | Active Server Pages. |
| AT | Advanced Technology. |
| AV | Antivirus software |
| Avatar | A small immovable or animated image that you choose to represent your personality in a forum, blog or similar context. |
| Backup (copy) | A reserve file copy kept in case the original file gets lost or corrupted |
| Banner | An advertising block that includes graphical or text elements used in the Internet to attract visitors to the web site |
| Banner exchange network | An advertising block that includes graphical or text elements used in the Internet to attract visitors to the web site |
| Bit (binary digit) | The smallest information unit that has only one of two values: 0 or 1. |
| Bridge Page(redirect page, enter page) | Pages created in order to obtain high score in search engines. Such pages are intermediate and forward users to the web sites directly. |
| Browser | A software application dedicated to watch HTML-documents |
| Buffer | A temporary storage area on your computer |
| Bus | Data transfer channel on your computer |
| Cache memory | Memory used to store the data that improves the apparent speed of computer components including processors, disk drives, graphics cards etc. Where data is available in the cache it is retrieved from |
| The cache instead of the Random Access | Memory that makes the process much faster and more efficient. |
| Clustering | A group of computers connected between each other working together as if they were a single computer. Clustering favors the increase of performance. |
| CMYK | Cyan, Magenta, Yellow, Key (black) - the four principle colors used in the printing process |
| Cookie | Some data stored by your web browser when you visit a web site that favors to ease your virtual activity. |
| Control key | A key or a key combination that allows to perform a special operation (Ctrl+C stands for Copy etc). |
| CP/M | Control Program for Microprocessors - an obsolete operating system for 8-bit computers |
| CPU | A central processing unit - a part of the computer that interprets and effectuates different commands |
| CSS | Cascading Style Sheet(s) - an extension to HTML that helps you to see how HTML documents can be displayed using different output styles. |