| A | B |
| bit | binary digit |
| byte | 8 bits |
| kilobyte | 1024 bytes (2 to the 10th power bytes), or approximately one thousand bytes |
| megabyte | 1048576 bytes (2 to the 20th power bytes), or approximately one million bytes |
| gigabyte | 1024 megabytes (2 to the 30th power bytes), or approximately one billion bytes |
| terabyte | 1024 gigabytes (2 to the 40th power bytes), or approximately one trillion bytes |
| Boolean | system of logical mathematics developed by George Boole involving only values of 1 and 0 |
| query | a search term, phrase or question that specifies the data to be retrieved |
| piracy | the illegal duplication of copyrighted software without the permission of the software owner or publisher |
| copyright | the legal and intellectual right of a person or company to retain control of an original work |
| telecommunications | sending and receiving information (both voice and electronic) by means of the telephone system |
| peripheral | a device or piece of hardware externally connected to and controlled by a computer |
| interactive | system that requires a user to respond to processes that are currently running |
| artificial intelligence | the simulation of human intelligence processes by computer systems, including learning, reasoning, and self-correction |
| MP3 | a standard format for compressing a sound sequence into a very small file while preserving the original level of sound quality played |
| ISDN | Integrated Services Digital Network: a set of standards for digital transmission over ordinary copper telephone lines, supporting data rates of 64 or 128 Kbps |
| DSL | Digital Subscriber Line: a technology for bringing high-bandwidth information to homes and small businesses over ordinary copper telephone lines, supporting data rates exceeding 1.5 Mbps |
| wave file | a standard PC audio file format, created by Microsoft |
| RealAudio | a continuous or streaming sound technology from Progressive Networks |
| cable modem | a device that enables you to hook up your PC to a local cable TV line and receive data at about 1.5 Mbps |