IBM 865741Y Handbook - Page 257

device, such as a diskette drive, hard disk drive, or CD-ROM drive, in which access time is effectively independent of the location of the data on the storage medium. direct memory access (DMA). The transfer of data between memory and input/output devices without microprocessor intervention. diskette. A small magnetic disk enclosed in a jacket. (T) diskette drive. The mechanism used to seek, read, and write data on diskettes. It can be installed in, or attached to, a computer. electrically erasable programmable read-only memory (EEPROM). EPROM that can be reprogrammed while it is in the computer. EPROM. Erasable programmable read-only memory. erasable programmable read-only memory (EPROM). A PROM that can be erased by a special process and reused. (T) extended industry standard architecture (EISA). An expansion bus architecture used in a network server that provides compatibility among hardware components. display. A component capable of displaying information on a viewing surface; for example, a cathode ray tube or a gas panel. DMA. Direct memory access. duplex. Pertaining to communication in which data can be sent and received at the same time. Synonymous with full-duplex (FDX).. Contrast with half-duplex (HDX). E ECC. Error correcting code. EEPROM. Electrically erasable programmable read-only memory. F FDX. Full-duplex. Synonymous with duplex. Contrast with HDX. file. A named set of records stored or processed as a unit. (T) flash memory. See electrically erasable programmable read-only memory (EEPROM). frame. (1) A data structure that consists of fields, predetermined by a protocol, for the transmission of user data and control data. The composition of a frame, especially the number and types of fields, may vary according to the type of protocol. (T) EISA. Extended industry standard architecture. frequency. The rate of signal oscillation, expressed in hertz. Glossary 239