Quick Reference Guide

408 Glossary
EPP
Abbreviation for Enhanced Parallel Port which provides improved bidirectional
data transmission. Many devices are designed to take advantage of the
EPP standard, especially devices, such as network or SCSI adapters that connect
to the parallel port of a portable computer.
EPROM
Acronym for erasable programmable read-only memory.
ESD
Abbreviation for electrostatic discharge.
ESM
Abbreviation for embedded systems management, which is a set of instruction
coding in system software and firmware that notifies a user about potential
hardware problems on a system.
expanded memory
A technique for accessing RAM above 1 MB. To enable expanded memory on
your system, you must 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 system 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 system'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 RAM.