ALU - Arithmetic logic unit
ACPI - Advanced Configuration and Power Interface
AC - Alternating Current
AM - Amplitude Modulated
AMD - Advanced Micro Devices, Inc.
AMD - Advanced Micro Devices, Inc.
AMI - American Megatrends Inc.
ANSI - American National Standards Institute
API - Application Program Interface
APIC - Advanced Programmable Interrupt Controller
APM - Advanced Power Management
ASCII - American Standard Code for Information Interchange
ASIC - Application Specific Integrated Circuit
ASPI - Advanced SCSI ProgrammingInterface
AT - Advanced Technology
ATA - AT Bus Attachment
ATAPI - ATA Packet Interface
ATM - Asynchronous Transfer Mode
B
BBS - Bulletin Board System
BCC - Block Check Character
BSC - Binary Synchronous Communications
BSD - Berkeley Standard Distribution
BTU - British Thermal Units
BCD - Binary Coded Decimal
BIOS - Basic Input / Output System
BNC - Bayonet Nut Connecto
BPS - Bytes Per Second
bps - bits Per Second
C
CAM - Computer Aided Manufacturing
CAD - Computer Aided Design
CAS - Column Address Strobe
CPU - Central Processing Unit
CPI - Clocks Per Instruction
CR - Carriage Return
CUI - Composite User Interface
CRT - Cathode Ray Tube
CRC - Cyclical Redundancy Check
CD - Carrier Detect & Compact Disc
CD-R - Compact Disc-Recordable
CD-RW - Compact Disc-ReWritable
CD-ROM - Compact disc read-only memory
CGA - Color Graphics Adapter
CHS - Cylinder Head Sector
COMPUTER - Common Oriented Machine Particularly Used for Trade Education and Research
CMOS - Complementary Metal-Oxide Semiconductor
CPLD - Complex Programmable Logic Devic
CSR - Command Status Register
CRC - Cyclic Redundancy Check
CTS - Clear To Send
D
DVI - Digital Visual Interface
DVD - Digital Video Disc or Digital Versatile Dis
DAT - Digital Audio Tape
DC - Direct Current
DCD - Data Carrier Detect
DCE - Data Circuit-terminating Equipment
DD - Double Density
DEC - Digital Equipment Corporation
DIMM - Dual Inline Memory Module
DIP - Dual-In-line Packag
DMA - Direct Memory Access
DMI - Desktop Management Interface
DOS - Disk Operating System
DPE - Data Parity Error
DRAM - Dynamic Random Access Memory
DS - Double Sided
DSP - Digital Signal Processor
DSR - Data Set Ready
DTA - Disk Transfer Area
DTC - Data Terminal Controller
DTE - Data Terminating Equipment
DTR - Data Terminal Ready
E
EBCDIC - Extended Binary Coded Decimal Interchange Code
EC - Error Check
ECC - Error Check and Correction
ECP - Enhanced Communication Port
ECU - EISA Configuration Utility
EDO - Extended Data Out RAM
EEPROM - Electrically Erasable Programmable Read Only Memor
EGA - Enhanced Graphics Adapter
EIA - Electronic Industries Associatio
EIDE - Enhanced Integrated Device Electronics
EISA - Enhanced Industry Standard Architecture
EMI - Electro-Magnetic Interferenc
EMF - Electro-Magnetic Force
EMM - Expanded Memory Manager
EMS - Expanded Memory Specification
EOF - End Of File
EOL - End Of Line
EPP - Enhanced Parallel Por
EPROM - Erasable Programmable Read Only Memor
ESCD - Extended System Configuration Data
ESD - Electro-Static Discharge
ESDI - Enhanced Small Devices Interface
F
FTP - File Transfer Protocol
FAT - File Allocation Table
FCC - Federal Communications Commission
FDD - Fixed/Floppy Disk Drive
FDDI - Fiber Distributed Data Interface
FDM - Frequency Division Multiplexing
FDX - Full-Duplex Transmission
FE - Front End
FEP - Front End Processor
FF - Form Feed
FIFO - First-In First-Out
FILO - First-In Last-Out
FM - Frequency Modulation
FPGA - Field Programmable Gate Array
FPM - Fast Page Mode RAM
FPU - Floating Point Unit
FRC - Functional Redundancy Checking
FRU - Field-Replaceable Unit
FSF - Free Software Foundation
FSK - Frequency Shifty Keying
G
GUI - Graphical user interface
GAS - Gallium Arsenide
GFLOPS - Billions of Floating Point Operations Per Second
H
HTML - Hyper Text Markup Language
HD - High Density
HDD - Hard Disk Drive
HDX - Half-Duplex Transmission
HFS - Hierarchical File System
HPFS - High Performance File System
I
IBM - International Business Machines
I/O - Input/Output
IC - Integrated Circuit
IDE - Integrated Device Electronics
IEEE - Institute of Electrical and Electronic Engineers
IMP - Interface Message Processor
IP - Internet Protocol
IPC - Inter Process Communication
IPX - Inter network Packet eXchange
IRQ - Interrupt ReQuest
ISA - Industry Standard Architecture
ISDN - Integrated Services Digital Network
ISO - International Standards Organization
ISR - Interrupt Service Routine
IVT - Interrupt Vector Table
J
JFS - Journalized File System
K
KNI - Katmai New Instructions
KVA - KiloVolt-Amps
L
LBA - Linear Block Array / Addressing
LCD - Liquid crystal display
LAN - Local area network
LOGO - Language of Graphic-Oriented
LED - Light Emitting Diod
LF - Line Fee
LIF - Low Insertion Force
LIM - Lotus/Intel/Microsofts Expanded Memory Manager
LRU - Least-Recently Used
LSB - Least Significant Byte/bit
LSI - Large Scale Integration
LUN - Logical Unit Number
LASER - Light Amplification by Stimulated Emission of Radiation
M
MAN - Metropolitan area networ
MESI - Modified/Exclusive/Shared/Invalid
MIPS - Microprocessor without Interlocked Pipeline Stages
MSo - Micro Soft Office, Multi system operator
MB/Mb - Mega Bytes/bits
MBR - Master Boot Record
MCA - Micro Channel Architecture
MCGA - Multi-Color Graphics Array
MCM - Multi-Chip Module
MDRAM - Multi-bank RAM
MFLOPS - Millions of FLOating Point Operations per Second
MFM - Modified Frequency Modulated
MHz - MegaHertz
MICR - Magnetic Ink Character Recognition
MIDI - Musical Instrument Data Interface
MIMD - Multiple-Instruction Multiple-Data
MISD - Multiple-Instruction Single Dat
MMX - Multi-Media Extensions
MNP - Microcom Network Protocol
MODEM - MOdulator / DEModulator
MOPS - Millions of Operations Per Second
MOS - Metal-Oxide Semiconductor
MP - Multi-Processor
MPP - Massively Parallel Processo
MPS - Multi-Processor System
MSB - Most Significant Byte/bit
MSDOS - Microsoft's Disk Operating System
MSI - Medium Scale Integration
MTBF - Mean Time Between Failure
ALU - Arithmetic logic unit
ACPI - Advanced Configuration and Power Interface
AC - Alternating Current
AM - Amplitude Modulated
AMD - Advanced Micro Devices, Inc.
AMD - Advanced Micro Devices, Inc.
AMI - American Megatrends Inc.
ANSI - American National Standards Institute
API - Application Program Interface
APIC - Advanced Programmable Interrupt Controller
APM - Advanced Power Management
ASCII - American Standard Code for Information Interchange
ASIC - Application Specific Integrated Circuit
ASPI - Advanced SCSI ProgrammingInterface
AT - Advanced Technology
ATA - AT Bus Attachment
ATAPI - ATA Packet Interface
ATM - Asynchronous Transfer Mode
B
BBS - Bulletin Board System
BCC - Block Check Character
BSC - Binary Synchronous Communications
BSD - Berkeley Standard Distributio
BTU - British Thermal Units
BCD - Binary Coded Decimal
BIOS - Basic Input / Output System
BNC - Bayonet Nut Connector
BPS - Bytes Per Second
bps - bits Per Second
C
CAM - Computer Aided Manufacturing
CAD - Computer Aided Design
CAS - Column Address Strobe
CPU - Central Processing Unit
CPI - Clocks Per Instruction
CR - Carriage Return
CUI - Composite User Interface
CRT - Cathode Ray Tub
CRC - Cyclical Redundancy Check
CD - Carrier Detect & Compact Disc
CD-R - Compact Disc-Recordabl
CD-RW - Compact Disc-ReWritable
CD-ROM - Compact disc read-only memory
CGA - Color Graphics Adapter
CHS - Cylinder Head Sector
COMPUTER - Common Oriented Machine Particularly Used for Trade Education and Researc
CMOS - Complementary Metal-Oxide Semiconductor
CPLD - Complex Programmable Logic Device
CSR - Command Status Register
CRC - Cyclic Redundancy Check
CTS - Clear To Send
D
DVI - Digital Visual Interface
DVD - Digital Video Disc or Digital Versatile Disc
DAT- Digital Audio Tape
DC - Direct Current
DCD - Data Carrier Detect
DCE - Data Circuit-terminating Equipmen
DD - Double Density
DEC - Digital Equipment Corporation
DIMM - Dual Inline Memory Module
DIP - Dual-In-line Package
DMA - Direct Memory Access
DMI - Desktop Management Interface
DOS - Disk Operating System
DPE - Data Parity Error
DRAM - Dynamic Random Access Memory
DS - Double Sided
DSP - Digital Signal Processor
DSR - Data Set Ready
DTA - Disk Transfer Area
DTC - Data Terminal Controlle
DTE - Data Terminating Equipment
DTR - Data Terminal Read
E
EBCDIC - Extended Binary Coded Decimal Interchange Code
EC - Error Check
ECC - Error Check and Correction
ECP - Enhanced Communication Port
ECU - EISA Configuration Utility
EDO - Extended Data Out RAM
EEPROM - Electrically Erasable Programmable Read Only Memory
EGA - Enhanced Graphics Adapter
EA - Electronic Industries Association
EIDE - Enhanced Integrated Device Electronics
EISA - Enhanced Industry Standard Architecture
EMI - Electro-Magnetic Interference
EMF - Electro-Magnetic Force
EMM - Expanded Memory Manager
EMS - Expanded Memory Specification
EOF - End Of File
EOL - End Of Line
EPP - Enhanced Parallel Port
EPROM - Erasable Programmable Read Only Memory
ESCD - Extended System Configuration Data
ESD - Electro-Static Discharge
ESDI - Enhanced Small Devices Interface
F
FTP - File Transfer Protocol
FAT - File Allocation Table
FCC - Federal Communications Commission
FDD - Fixed/Floppy Disk Drive
FDDI - Fiber Distributed Data Interface
FDM - Frequency Division Multiplexing
FDX - Full-Duplex Transmission
FE - Front End
FEP - Front End Processor
FF - Form Feed
FIFO - First-In First-Out
FILO - First-In Last-Out
FM - Frequency Modulation
FPGA - Field Programmable Gate Array
FPM - Fast Page Mode RAM
FPU - Floating Point Unit
FRC - Functional Redundancy Checking
FRU - Field-Replaceable Unit
FSF - Free Software Foundation
FSK - Frequency Shifty Keying
G
GUI - Graphical user interface
GAS - Gallium Arsenide
GFLOPS - Billions of Floating Point Operations Per Second
H
HTML - Hyper Text Markup Language
HD - High Density
HDD - Hard Disk Drive
HDX - Half-Duplex Transmission
HFS - Hierarchical File System
HPFS - High Performance File System
I
IBM - International Business Machines
I/O - Input/Output
IC - Integrated Circuit
IDE - Integrated Device Electronics
IEEE - Institute of Electrical and Electronic Engineers
IMP - Interface Message Processor
IP - Internet Protocol
IPC - Inter Process Communication
IPX - Inter network Packet eXchange
IRQ - Interrupt ReQuest
ISA - Industry Standard Architecture
ISDN - Integrated Services Digital Network
ISO - International Standards Organization
ISR - Interrupt Service Routin
IVT - Interrupt Vector Table
J
JFS - Journalized File System
K
KNI - Katmai New Instructions
KVA - KiloVolt-Amps
L
LBA - Linear Block Array / Addressing
LCD - Liquid crystal displa
LAN - Local area network
LOGO - Language of Graphic-Oriente
LED - Light Emitting Diode
LF - Line Feed
LIF - Low Insertion Force
LIM - Lotus/Intel/Microsofts Expanded Memory Manager
LRU - Least-Recently Used
LSB - Least Significant Byte/bit
LSI - Large Scale Integration
LUN - Logical Unit Number
LASER - Light Amplification by Stimulated Emission of Radiation
M
MAN - Metropolitan area network
MESI - Modified/Exclusive/Shared/Invalid
MIPS - Microprocessor without Interlocked Pipeline Stages
MSo - Micro Soft Office, Multi system operator
MB/Mb - Mega Bytes/bits
MBR - Master Boot Record
MCA - Micro Channel Architecture
MCGA - Multi-Color Graphics Array
MCM - Multi-Chip Modul
MDRAM - Multi-bank RAM
MFLOPS - Millions of FLOating Point Operations per Second
MFM - Modified Frequency Modulated
MHz - MegaHertz
MICR - Magnetic Ink Character Recognition
MIDI - Musical Instrument Data Interface
MIMD - Multiple-Instruction Multiple-Data
MISD - Multiple-Instruction Single Data
MMX - Multi-Media Extensions
MNP - Microcom Network Protocol
MODEM - MOdulator / DEModulator
MOPS - Millions of Operations Per Second
MOS - Metal-Oxide Semiconductor
MP - Multi-Processor
MPP - Massively Parallel Processo
MPS - Multi-Processor System
MSB - Most Significant Byte/bit
MSDOS - Microsoft's Disk Operating System
MSI - Medium Scale Integration
MTBF - Mean Time Between Failure
N
N/C - No-Connect
NBS - National Bureau of Standards
NEMA - National Electrical Manufacturers Association
NFS - Network File System
NFU - Not-Frequently Used
NIC - Network Interface Card
NMI - Non-Maskable Interrupt
NMOS - Negatively doped Metal-Oxide Semiconductor
NOP - No OPeration NRU Not-Recently Used
NOS - Network Operating System
NSF - National Science Foundation
NTFS - New Technology File System
NVRAM - NonVolatile Random Access Memory
O
OCR - Optical Character Recognition
ODI - Open Data link Interface
OEM - Original Equipment Manufacturer
OS - Operating System
OSF - Open Software Foundation
OSI - Open Systems Interconnect
P
PAL - Programmable Array Logic
PB - Push Button
PBX - Private Branch eXtender
PC - Personal Computer, Program Counter
PCB - Printed Circuit Board
PCI - Peripheral Component Interconnect
PCM - Pulse Code Modulation
PCMCIA - Personal Computer Memory Card International Association
PE - Processor Element
FF - Page Fault Frequency
PGA - Professional Graphics Array
PGA - Pin Grid Array
PIC - Programmable Interrupt Controller
PIO - Programmed Input / Output
PIROM - Processor Information ROM
PLA - Programmable Logic Array
PLCC - Plastic Leaded Chip Carrier
PLD - Programmable Logic Devices
PLL - Phase Locked Loop
PM - Preventive Maintenance
PMOS - Positively doped Metal-Oxide Semiconductor
PnP - Plug-and-Play
POST - Power On Self Test
PPP - Point-to-Point Protocol
PQFP - Plastic Quad Flat Pack
PROM - Programmable Read Only Memory
PSTN - Public Switched Telephone Network
PSP - Program Segment Prefix
PTE - Page Table Entry
Q
QAM - Quadrature Amplitude Modulation
QFP - Quad Flat Pack
QIC - Quarter Inch Cartridge
R
RAM - Random-access memory
RAID - Redundant Arrays of Inexpensive Disk
RAMDAC - Random Access Memory Digital to Analogue Converter
RAS - Row Address Strobe
RCA - Radio Corporation of America
RCC - Routing Control Center
RDRAM - Rambus DRAM
RFC - Request For Comments
RFI - Radio Frequency Interference
RI - ing Indicator
RISC - Reduced Instruction-Set Computer
RLL - Run Length Limited
RMS - Root Mean Squared
RMW - Read Modify Write
ROM - Read Only Memory
RPC - Remote Procedure Call
RPM - Rotations Per Minute
RTC - Real Time Clock
RTS - Request To Send
S
SAM - Sequential Access Memory
SASI - Shugart Associates Standard Interface
SCSI - Small Computer Systems Interface
SD - Single Density
SDLC - Synchronous Data Link Contro
SDRAM - Synchronous Dynamic RAM
SDRAM DDR - Double Data Rate SDRAM
SDRAM BDDR - Bi-Directional Strobed DDR SDRAM
SE - Systems Engineer
SEC - Single Edge Contact
SFF - Small Form Factor
SGRAM - Synchronous Graphics RAM
SMS - Short Message Service
SIMD - Single-Instruction Multiple-Data
SIMM - Single Inline Memory Module
SIPP - Single Inline Pinned Package
SISD - Single-Instruction Single-Data
SLIP - Serial Line Internet Protocol
SMD - Surface Mount Device
SMT - Surface Mount Technology
SNA - System Network Architecture
SNR - Signal to Noise Rati
SOL - Small Out Line
SOIC - Small Outline Integrated Circuit
SPOOL - Simultaneous Peripheral Operation On Line
SPT - Sectors Per Track
SPU - Single Processor Unit
SRAM - Static Random Access Memory
SS - Single Sided
STDM - Synchronous Time Division Multiplexing
STN - Super Twisted Nematic
STU - Streaming Tape Unit
SVGA - Super Video Graphics Array
T
TCM - Trellis Code Modulation
TCP - Transmission Control Protocol
TCP/IP - Transmission Control Protocol /Internet Protocol
TDM - Time Division Multiplexing
TI - Texas Instruments
TIA - Telecomm Industry Association
TLB - Translation-Look aside Buffer
TPI - Tracks Per Inch
TRANSISTOR - TRANSformer resISTOR
TSR - Terminate and Stay Resident
TTL - Transistor-Transistor Logic
U
UAE - Unrecoverable Application Error
UART - Universal Asynchronous Receiver Transmitter
USART - Universal Synchronous/Asynchronous Receiver/Transmitter
UDP - User Datagram Protocol
UMB - Upper Memory Block
USB - Universal Serial Bus
UNIX - A trademark used for a computer disk operating system
UPS - Uninterruptible power supply
USL - UNIX System Labs
UUCP - UNIX to UNIX Copy Program
V
VIRUS - Vital Information Resources Under Seize
VDU - Visual Display Unit
VBE - Video BIOS Extensions
VCR - Video Cassette Recorder
VESA - Video Enhanced Standards Association
VGA - Video Graphics Array
VLB - VESA Local Bus
VLIW - Very Long Instruction Word
VLSI - Very Large Scale Integration
VM - Virtual Memory
VME - Versa Module Euro-car
VRAM - Video Random Access Memory
VRT - Voltage Reduction Technology
VTR - Video Tape Recorder
W
WAN - Wide area network
WATS - Wide Area Telephone Service
WD - Western Digital
WORM - Write Once Read-Many
WRAM - Window Random Access Memory
WS - Wait State
WWW - World Wide Web
X
XGA - eXtended Graphics Array
XMS - Extended Memory Specification
XOR - Exclusive-OR
XNOR - Exclusive-NOR
XT - eXtended Technology
Z
ZIF - Zero Insertion For
N
N/C - No-Connect
NBS - National Bureau of Standards
NEMA - National Electrical Manufacturers Association
NFS - Network File System
NFU - Not-Frequently Used
NIC - Network Interface Card
NMI - Non-Maskable Interrupt
NMOS - Negatively doped Metal-Oxide Semiconductor
NOP - No OPeration NRU Not-Recently Used
NOS - Network Operating System
NSF - National Science Foundation
NTFS - New Technology File System
NVRAM - NonVolatile Random Access Memory
O
OCR - Optical Character Recognition
ODI - Open Data link Interface
OEM - Original Equipment Manufacturer
OS - Operating System
OSF - Open Software Foundation
OSI - Open Systems Interconnect
P
PAL - Programmable Array Logic
PB - Push Button
PBX - Private Branch eXtender
PC - Personal Computer, Program Counter
PCB - Printed Circuit Board
PCI - Peripheral Component Interconnect
PCM - Pulse Code Modulation
PCMCIA - Personal Computer Memory Card International Association
PE - Processor Element
PFF - Page Fault Frequency
PGA - Professional Graphics Array
PGA - Pin Grid Array
PIC - Programmable Interrupt Controller
PIO - Programmed Input / Output
PIROM - Processor Information ROM
PLA - Programmable Logic Array
PLCC - Plastic Leaded Chip Carrier
PLD - Programmable Logic Devices
PLL - Phase Locked Loop
PM - Preventive Maintenance
PMOS - Positively doped Metal-Oxide Semiconductor
PnP - Plug-and-Play
POST - Power On Self Test
PPP - Point-to-Point Protocol
PQFP - Plastic Quad Flat Pack
PROM - Programmable Read Only Memory
PSTN - Public Switched Telephone Network
PSP - Program Segment Prefix
PTE - Page Table Entry
Q
QAM - Quadrature Amplitude Modulation
QFP - Quad Flat Pack
QIC - Quarter Inch Cartridge
R
RAM - Random-access memory
RAID - Redundant Arrays of Inexpensive Disks
RAMDAC - Random Access Memory Digital to Analogue Converter
RAS - Row Address Strobe
RCA - Radio Corporation of America
RCC - Routing Control Center
RDRAM - Rambus DRAM
RFC - Request For Comments
RFI - Radio Frequency Interference
RI - Ring Indicator
RISC - Reduced Instruction-Set Computer
RLL - Run Length Limited
RMS - Root Mean Squared
RMW - Read Modify Write
ROM - Read Only Memory
RPC - Remote Procedure Call
RPM - Rotations Per Minute
RTC - Real Time Clock
RTS - Request To Send
S
SAM - Sequential Access Memory
SASI - Shugart Associates Standard Interface
SCSI - Small Computer Systems Interface
SD - Single Density
SDLC - Synchronous Data Link Control
SDRAM - Synchronous Dynamic RAM
SDRAM DDR - Double Data Rate SDRAM
SDRAM BDDR - Bi-Directional Strobed DDR SDRAM
SE - Systems Engineer
SEC - Single Edge Contact
SFF - Small Form Factor
SGRAM - Synchronous Graphics RAM
SMS - Short Message Service
SIMD - Single-Instruction Multiple-Data
SIMM - Single Inline Memory Module
SIPP - Single Inline Pinned Package
SISD - Single-Instruction Single-Data
SLIP - Serial Line Internet Protocol
SMD - Surface Mount Device
SMT - Surface Mount Technology
SNA - System Network Architecture
SNR - Signal to Noise Ratio
SOL - Small Out Line
SOIC - Small Outline Integrated Circuit
SPOOL - Simultaneous Peripheral Operation On Line
SPT - Sectors Per Track
SPU - Single Processor Unit
SRAM - Static Random Access Memory
SS - Single Sided
STDM - Synchronous Time Division Multiplexing
STN - Super Twisted Nematic
STU - Streaming Tape Unit
SVGA - Super Video Graphics Array
T
TCM - Trellis Code Modulation
TCP - Transmission Control Protocol
TCP/IP - Transmission Control Protocol /Internet Protocol
TDM - Time Division Multiplexing
TI - Texas Instruments
TIA - Telecomm Industry Association
TLB - Translation-Look aside Buffer
TPI - Tracks Per Inch
TRANSISTOR - TRANSformer resISTOR
TSR - Terminate and Stay Resident
TTL - Transistor-Transistor Logic
U
UAE - Unrecoverable Application Error
UART - Universal Asynchronous Receiver Transmitter
USART - Universal Synchronous/Asynchronous Receiver/Transmitter
UDP - User Datagram Protocol
UMB - Upper Memory Block
USB - Universal Serial Bus
UNIX - A trademark used for a computer disk operating system
UPS - Uninterruptible power supply
USL - UNIX System Labs
UUCP - UNIX to UNIX Copy Program
V
VIRUS - Vital Information Resources Under Seize
VDU - Visual Display Unit
VBE - Video BIOS Extensions
VCR - Video Cassette Recorder
VESA - Video Enhanced Standards Association
VGA - Video Graphics Array
VLB - VESA Local Bus
VLIW - Very Long Instruction Word
VLSI - Very Large Scale Integration
VM - Virtual Memory
VME - Versa Module Euro-car
VRAM - Video Random Access Memory
VRT - Voltage Reduction Technology
VTR - Video Tape Recorder
W
WAN - Wide area network
WATS - Wide Area Telephone Service
WD - Western Digital
WORM - Write Once Read-Many
WRAM - Window Random Access Memory
WS - Wait State
WWW - World Wide Web
X
XGA - eXtended Graphics Array
XMS - Extended Memory Specification
XOR - Exclusive-OR
XNOR - Exclusive-NOR
XT - eXtended Technology
Z
ZIF - Zero Insertion Force
