| A | B |
| Object-Oriented Programming | A system that deals primarily with different types of objects, and where the actions you can take depend on what type of object you are manipulating. |
| JavaScript | A scripting language developed by Netscape to enable Web authors to design interactive sites. |
| Java | A high-level programming language developed by Sun Microsystems. |
| Applet | A program designed to be executed from within another application. |
| Animated GIF | A type of GIF image that can be animated by combining several images into a single GIF file. |
| GIF | Stands for Graphics Interchange Format; supports color and various resolutions. |
| Interlaced GIF | An image which displays on the screen in a sequence of four passes; each pass displays the whole image at a higher resolution than the previous pass. |
| JPEG | Short for Joint Photographic Experts Group and pronounced jay-peg. |
| Lossless Compression | Refers to data compression in which all data is retained when the image is compressed. |
| Lossy Compression | Refers to data compression in which some amount of data is lost--eliminates redundant or unnecessary information. |
| PNG | Has been approved by the World Wide Web Consortium to replace GIF. |
| Progressive JPEG | Displays on the screen in a sequence of passes, giving the viewer a preview of the image to come. |
| Thumbnail | A miniature display of an image; provides decreased download time. |
| AU | Short for audio, a common format for sound files on UNIX machines. It is also the standard audio file format for the Java programming language. |
| Codecs | Special computer programs that greatly reduce audio file size. |
| Encoder | A special program used to convert a .wav file to an .mp3 file format. |
| MIDI | A standard adopted by the electronic music industry for controlling devices, such as synthesizers and sound cards. |
| MP3 | The file extension for MPEG, audio layer 3. Layer 3 is used for the compression of audio signals. |
| Ripper | A special program used to extract an audio segment from a CD. |
| WAV | The format for storing sound in files developed jointly by Microsoft and IBM. |