disk drive
GLOSSARY
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.
diskette: A removable disk that stores magnetically encoded data. Also called a floppy disk.
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 applica- tion. 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).
Glossary-6
DVD±RW: A Digital Versatile
Disc ± Read/Write disc can be rewritten many times.
E
echo: To send back a reflection of the transmitted data to the sending device. You can display the informa- tion 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.
escape: 1) A code ( ASCII code 27), signaling the computer that what follows are commands; used with peripheral devices such as printers and modems. 2) A means of aborting the task currently in progress.
