Compaq W4000 Dac, Dch, Ddc, Ddr, Dimm, Din, Dip, Dma, Dmi, Dram, Drq, Dvi, Edid, Edo, Eeprom, Ega

Technical Reference Guide

Table 1-1.Acronyms and Abbreviations Continued

Acronym/Abbreviation	Description
DAC	digital-to-analog converter
DC	direct current
DCH	DOS compatibility hole
DDC	Display Data Channel
DDR	Double data rate (memory)
DIMM	dual inline memory module
DIN	Deutche IndustriNorm (connector type)
DIP	dual inline package
DMA	direct memory access
DMI	Desktop management interface
dpi	dots per inch
DRAM	dynamic random access memory
DRQ	data request
DVI	Digital video interface
EDID	extended display identification data
EDO	extended data out (RAM type)
EEPROM	electrically eraseable PROM
EGA	enhanced graphics adapter
EIA	Electronic Industry Association
EISA	extended ISA
EPP	enhanced parallel port
EIDE	enhanced IDE
ESCD	Extended System Configuration Data (format)
EV	Environmental Variable (data)
ExCA	Exchangeable Card Architecture
FIFO	first in / first out
FL	flag (register)
FM	frequency modulation
FPM	fast page mode (RAM type)
FPU	Floating point unit (numeric or math coprocessor)
FPS	Frames per second
ft	Foot/feet
GB	gigabyte
GMCH	Graphics/memory controller hub
GND	ground
GPIO	general purpose I/O
GPOC	general purpose open-collector
GART	Graphics address re-mapping table
GUI	graphic user interface
h	hexadecimal
HW	hardware
hex	hexadecimal
Hz	Hertz (cycles-per-second)
ICH	I/O controller hub
IDE	integrated drive element
IEEE	Institute of Electrical and Electronic Engineers
IF	interrupt flag
I/F	interface

Continued

Compaq Evo and Workstation Personal Computers 1-5

Featuring the Intel Pentium 4 Processor

Second Edition – January 2003