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motherboard—The main circuit board in the computer. It contains the processor, memory, and other primary components. MS-DOS® prompt—See system prompt. multi-function drive—A DVD drive that can read and write to CD and DVD media. multimedia—A combination of two or more media, such as sound, animation, and video in a computer program or presentation. Musical Instrument Digital Interface—See MIDI. network—A collection of computers and associated devices that are N connected by communications facilities. A network allows you to share data and peripheral devices, such as printers, with other users and to exchange electronic mail. Glossary Glossary non-interlaced—A method of refreshing a computer screen, in which each pixel of every line is refreshed as the electron beam scans across and down the screen. Compare interlaced. non-system disk—A disk for storing programs and data that cannot be used to start the computer. Compare system disk. online—Available through the computer. Online may refer to O information being read from your own computer’s hard disk, such as online documentation or online help, or to information coming from another company on a company network or the Internet. operating system—A set of programs that controls how the computer works. Examples of operating systems are Windows® XP and Windows® 2000. palette—See color palette. P parallel—Processes that occur simultaneously. In communications, it means the transmission of more than one bit of information at a time. A parallel port provides a parallel communications interface between a computer and an appropriate device. Compare serial. password—A unique string of characters entered by a user to verify his or her identity to the computer or the network. PC Card—A credit-card-sized expansion card designed to increase the capabilities of notebook computers. PC Cards provide functions such as modem, fax/modem, hard disk drive, network adapter, sound card, or SCSI adapter. peripheral—Any device, such as a printer or joystick, that is attached to the computer and controlled by the computer’s CPU. pixel—Short for “picture element.” The smallest dot that can be produced on a screen or printer. Plug and Play—Generally, refers to the computer’s ability to automatically configure itself to work with peripheral devices. When capitalized, refers to a standard that, when followed by a device manufacturer, allows a PC to configure itself automatically to work with the device. pointing device—Any device, such as the TouchPad or a mouse, that enables you to move the cursor on the screen. Glossary Glossary port—A socket on the computer where you plug in a cable for connection to a network or a peripheral device. processor—See central processing unit (CPU). program—A set of instructions that can be executed by a computer. The general classes of programs (also called software) are operating system, application, and utility. See also oper...

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