Glossary
DC: Direct Current. Electric current that flows in one direction. This type of power is usually supplied by batteries.
default: The parameter value automatically selected by the system when you or the program do not provide instructions. Also called a preset value.
delete: To remove data from a disk or other data storage device. Synonymous with erase.
device driver: A program that controls communication between a specific peripheral device and the computer. The CONFIG.SYS file contains device drivers that
dialog box: A window that accepts user input to make system settings or record other information.
disk drive: The device that randomly accesses information on a disk and copies it to the computer's memory. It also writes data from memory to the disk. To accomplish these tasks, the unit physically rotates the disk at high speed past a
disk storage: Storing data on magnetic disk. Data is arranged on concentric tracks much like a phonograph record.
display: A CRT, LCD, or other image producing device used to view computer output.
documentation: The set of manuals and/or other instructions written for the users of a computer system or application. Computer system documentation typically includes procedural and tutorial information as well as system functions.
DOS: disk Operating System. See operating system.
driver: A software program, generally part of the operating system, that controls a specific piece of hardware (frequently a peripheral device such as a printer or mouse).
E
echo: To send back a reflection of the transmitted data to the sending device. You can display the information on the screen, or output it to the printer, or both. When a computer receives back data it transmitted to a CRT (or other peripheral device) and then retransmits the data to printer, the printer is said to echo the CRT.
erase: See delete.
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