Abbreviations

A

amperes

MB

megabytes

dB

decibels

Mbps

megabits per second

GB

gigabytes

Mbit

megabits

GHz

gigahertz

MHz

megahertz

Hz

hertz

mm

millimeters

KB

kilobytes

ns

nanoseconds

kg

kilograms

V

volts

kHz

kilohertz

VDC

volts direct current

mA

milliamperes

$n

hexadecimal value n

10Base-T

an Ethernet standard for data transmission at 10 Mbits per second

100Base-TX

an Ethernet standard for data transmission at 100 Mbits per second

A/D

analog to digital

AGP

accelerated graphics port

ANSI

American National Standards Institute

API

application programming interface

ATA

Advanced Technology Attachment

ATAPI

ATA Packet Interface

BIOS

basic input/output system

CAS

column address strobe

CD

compact disc

CD-R

compact disc-recordable

CD-ROM

compact disc read-only memory

CD-RW

compact disc-rewrittable

CLV

constant linear velocity

CPU

central processing unit

CRM

Communications Resource Manager

D/A

digital to analog

DAA

data access adapter

DART

DMA Address Relocation Table

DBDMA

descriptor-based direct memory access

DDC

display data channel

DDR

double data rate, a type of SDRAM where data is clocked on rising and falling clock edges

DIMM

Dual Inline Memory Module

DMA

direct memory access

DRAM

dynamic random-access memory

DSSS

direct-sequence spread-spectrum

DV

digital video

DVD

digital video disc

DVD-R

digital video disc-recordable

DVD-ROM

digital video disc read-only memory

DVD-RW

digital video disc-rewrittable

EEPROM

electrically eraseable programmable ROM

G5

Generation 5, the fifth generation of PowerPC microprocessors

GART

graphics address remapping table

GND

ground

HFS

hierarchical file system

HID

human interface device, a class of USB devices

I2C

same as IIC

I2S

same as IIS

IC

integrated circuit

IDE

integrated device electronics

IEC

International Electrotechnical Commission

IEEE

Institute of Electrical and Electronics Engineers

IEEE 1275

the official specification for Open Firmware

IEEE 1394a

the official specification for FireWire 400 (400 Mbps)

IIC

inter-IC (an internal control bus)

IIS

inter-IC sound bus

I/O

input and output

ISO

International Organization for Standardization

JEDEC

Joint Electron Device Engineering Council

L1

level 1 or first level

L2

level 2 or second level

LAN

local area network

LED

light emitting diode

MAC

media access controller

Mac OS

Macintosh Operating System

MPEG

Motion Picture Experts Group

modem

modulator-demodulator

NMI

nonmaskable interrupt

NV-RAM

nonvolatile random-access memory

OFDM

orthogonal frequency-division multiplexing

OHCI

Open Host Controller Interface, USB 1.1 specification

OS

operating system

PCI

Peripheral Component Interconnect

PLL

phase-locked loop

POST

power-on self test

RADIUS

Remote Authentication Dial-In User Service

RAM

random-access memory

RAS

row address strobe

RCA

Radio Corporation of America

rms

root mean square

ROM

read-only memory

RTAS

run-time abstraction services

SATA

serial ATA bus for hard disk drives

SBP

Serial Bus Protocol

SCC

Serial Communications Controller

SDRAM

synchronous dynamic RAM

SGRAM

synchronous graphics RAM

Shasta

I/O device and disk controller

SMU

system management unit

SNR

signal to noise ratio

SPD

Serial Presence Detect

THD

total harmonic distortion

THD+N

total harmonic distortion plus noise

TMDS

transition minimized differential signaling

U3L

memory controller light version

USB

Universal Serial Bus

VCC

positive supply voltage (voltage for collectors)

VIA

versatile interface adapter

VESA

Video Electronics Standards Association

VRAM

video RAM; used for display buffers

Wi-Fi

Logo used by the Wireless Ethernet Compatibility Alliance for certification of interoperability of 802.11 products