| A | B |
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| Bit | The most basic unit of digital information. Traditionally, one character is usually eigtht bits (one byte), but 32-bit bytes are now common. |
| Byte | The common unit of computer storage from personal computers to mainframes. |
| Bitmapped | An image formed by a grid of pixels |
| Pixel | The smallest resolvable point of a raster image. |
| Raster Graphics | Computer graphics in which a picture is composed of an array of pixels arranged in rows and columns. |
| Raster Image Processor (RIP) | The hardware and software that translates typographic and graphic commands into sequence of dots or strokes needed by output hardware. |
| Imagesetter | A generic term that applies to raster-based film output devices |
| JPEG (Joint Photographic Experts Group) | A standard for lossy compression of graphic images. This compression method is not commonly used for printing because of data loss. |
| EPS (Encapsulated Postscript File) | An Adobe file format used to transfer postscript files which are device-independant. Can only be printed by postscript compatible printers. |
| TIFF (Tag Image File Format/Image Transfer) | A file format for exchanging bitmapped images (usually scanned images) between applications. A bitmapped file format for the reproduction of continuous tone images such as photographs and illustrations. |
| OCR (Optical Character Recognition) | Software that scans and reads printed text and allows it to be edited as a text file. |
| Vector Graphics | A method of encoding a graphic image as straight lines. Contrasted with Raster Graphics, which encodes images as patterns of dots. |
| Scanner | A device that is used to "scan" or record the contents as a bitmapped image. |
