User's Manual

256 Glossary
expanded memory
A technique for accessing RAM above 1 MB. To enable expanded memory on
your computer, use an EMM. You should configure your system to support
expanded memory only if you run application programs that can use (or require)
expanded memory.
expansion bus
Your computer contains an expansion bus that allows the microprocessor to
communicate with controllers for peripheral devices, such as a network card or
an internal modem.
expansion-card connector
A connector on the computer's system board or riser board for plugging in an
expansion card.
extended memory
RAM above 1 MB. Most software that can use it, such as the Windows operating
system, requires that extended memory be under the control of an XMM.
external cache memory
A RAM cache using SRAM chips. Because SRAM chips operate at several times
the speed of DRAM chips, the microprocessor can retrieve data and instructions
faster from external cache memory than from the RAM.
F
Abbreviation for Fahrenheit.
FAT
Acronym for file allocation table. The file system structure used by MS-DOS to
organize and keep track of file storage. The Windows NT
®
operating systems
(and later Windows versions) can optionally use a FAT file system structure.
FCC
Abbreviation for Federal Communications Commission.
FEPROM
Acronym for Flash Erasable Programmable Read-Only Memory. Flash memory
is a kind of non-volatile storage device similar to EEPROM, but the erasing takes
place only in blocks or the entire chip.