Developer Documentation
PATHHardware Documentation > Original Power Mac G3 Computers Developer Note


Abbreviations

When unusual abbreviations appear in this developer note, the corresponding terms are also spelled out. Standard units of measure and other widely used abbreviations are not spelled out.

Here are the standard units of measure used in this developer note:

A amperes mA milliamperes
dB decibels A microamperes
GB gigabytes MB megabytes
Hz hertz MHz megahertz
in. inches mm millimeters
k 1000 ms milliseconds
K 1024 s microseconds
KB kilobytes ns nanoseconds
kg kilograms ohms
kHz kilohertz sec. seconds
k kilohms V volts
lb. pounds W watts

Other abbreviations used in this note include:

$n hexadecimal value n
ADB Apple Desktop Bus
ATA advanced technology attachment
ATAPI advanced technology attachment packet interface
ATX a compact logic board design
AV audiovisual
AWACS audio waveform amplifier and converter for sound
CAS column address strobe
CD-ROM compact disc read-only memory
CLUT color lookup table
DAC digital to analog converter
DAV digital audio video
DDC display data channel
DIMM dual inline memory module
DIN Deutsche Industrie Norm
DMA dynamic memory access
DRAM dynamic random-access memory
DVD digital video disc, also referred to as digital versatile disc
EDO extended data out DRAM device type
EMI electromagnetic interference
GCR group code recording
IC integrated circuit
IDE integrated device electronics
IIC inter-integrated circuit (an internal control bus)
I/O input/output
IR infrared
JEDEC Joint Electronics Devices Engineering Council
L2 level 2, used in reference to level of cache
MESH Macintosh enhanced SCSI hardware
MMU memory management unit
MPEG Motion Picture Experts Group
NTSC National Television Standards Committee (the standard system used for broadcast TV in North America and Japan)
PAL Phase Alternating Line system (the standard for broadcast TV in most of Europe, Africa, South America, and southern Asia)
PCI Peripheral Component Interconnect
PGA pin grid array
PIO parallel input output
RAM random-access memory
RAS row address strobe
RAVE Rendering Acceleration Virtual Engine
RGB a video signal format with separate red, green, and blue components
RISC reduced instruction set computing
ROM read-only memory
SCSI Small Computer System Interface
SCC serial communications controller
SDRAM synchronous dynamic random access memory
SECAM the standard system used for broadcast TV in France and the former Soviet countries
SIMM single inline memory module
SGRAM synchronous graphics random access memory
SO-DIMM small outline dual inline memory module
SRAM static random access memory
S-video a type of video connector that keeps luminance and chrominance separate; also called a Y/C connector
SWIM Super Woz Integrated Machine, a custom IC that controls the floppy disk interface
VRAM video RAM; used for display buffers
Y/C a type of video connector that keeps luminance and chrominance separate; also called an S-video connector
YUV a video signal format with separate luminance and chrominance components


© 1998 Apple Computer, Inc.