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Siglas Mais Usuais (em Ingles)

A, B, C, D, E, F, GHI, JKL, M, NO, P, QR, S, T, UV, WXYZ
   A  Amperes
AC   Alternating Current
A/D  Analog to Digital
ADC  Analog to Digital Converter
AE   Applications Engineer
AI   Artificial Intelligence
ALU  Arithmetic-Logic Unit
AM   Amplitude Modulation
AMD  Advanced Micro Devices, Inc.
ANSI American National Standards Institute
ARQ  Automatic Retransmission reQuest
ASCII American Standard Code for Information Interchange
ASEE  American Society for Engineering Education
ASIC Application Specific Integrated Circuit
ASPI Advanced SCSI Programming Interface
ATDM Asynchronous Time Division Multiplexing
ATM  Asynchronous Transfer Mode AUI  Attached Unit Interface

   B  Magnetic Flux
BBS  Bulletin Board System
BCC  Block Check Character
BCD  Binary Coded Decimal
BiCMOS Bipolar Complementary Metal-Oxide Semiconductor
BIOS Basic Input / Output System
BNC  Bayonet Nut(?) Connector
BPS/bps   Bytes/bits Per Second
BSC  Binary Synchronous Communications
BSD  Berkeley Standard Distribution     
   C  Capacitância
CAD  Computer Aided Design  
CAM  Computer Aided Manufacturing
CAM  Content Addressable Memory
CAS  Column Address Strobe
CBX  Common Branch eXtender
CCD  Charge Coupled Device
CCITT     Consultative Committee of International Telephony and Telegraphy
CD   Carrier Detect
CDDI Copper Distributed Data Interface
 CDROM     Compact Disk Read Only Memory
CDMA Code Division Multiple Access
CGA  Color Graphics Adapter
CISC Complex Instruction-Set Computer
CLA  Carry Look-ahead Adder
CMOS Complementary Metal-Oxide Semiconductor
CP/M Control Program / Monitor
CPI  Clocks Per Instruction
CPLD Complex Programmable Logic Device
CPU  Central Processing  Unit
CR   Carriage Return
CRC  Cyclic Redundancy Code
CRQ  Command Response Queue
CRT  Cathode Ray Tube
CS   Chip Select / Check-Sum
CSMA Carrier Sense Multiple-Access
CSMA/CD   Carrier Sense Multiple-Access with Collision Detect
 CSR  Command Status Register
CTS  Clear To Send     

   D  Dissipation Factor
D/A  Digital to Analog
DAC  Digital to Analog Converter
DAT  Digital Audio Tape
dB  (DB) deciBels
dBm  dB referenciado  a 1 milliWatt
DC  Direct Current
DCD  Data Carrier Detect
DCE  Data Circuit (Channel) Equipment
DD  Double Density
DDD  Direct Distance Dialing
DEC  Digital Equipment Corporation
DES  Data Encryption Standard
DID  Direct Inward Dial
DIN  Deutsche Industrie Norm
DIP  Dual-In-line Package
DMA  Direct Memory Access
DOS  Disk Operating System
DPDT  Double-Pole Double-Throw (switch)
DPE  Data Parity Error
DPSK  Differential Phase Shift Keying
DRAM  Dynamic Random Access Memory
DS  Double Sided
DSP  Digital Signal Processor
DSR  Data Set Ready
DTC  Data Terminal Controller
DTE  Data Terminal (Terminating) Equipment
DTMF  Dual-Tone Multi-Frequency
DTR  Data Terminal Ready
DVD  Digital Video Disk     

   E  EMF
EBCDIC  Extended Binary Coded Decimal Interchange Code
ECC  Error Correction Code
ECL  Emitter-Coupled Logic
ECN  Engineering Change Notice
 ECO  Engineering Change Order
ECR  Engineering Change Request
EEPROM Electrically Erasable Programmable Read-Only Memory
EGA  Enhanced Graphics Adapter
EIA  Electronic Industries Association
EISA  Enhanced Industry Standard Architecture
EMI  Electro-Magnetic Interference
EMF  Electro-Motive Force
EMS  Expanded Memory Specification
EOF  End Of File EOL  End Of Line
EPROM  Erasable Programmable Read-Only Memory
 ESD  Electro-Static Discharge
ESDI  Enhanced Small Devices Interface     

   F  Farads
FAT  File Allocation Table
FCC  Federal Communications Commission
FDD  Floppy Disk Drive
FDDI  Fiber Distributed Data Interface
FDM  Frequency Division Multiplexing
FDMA  Frequency Division Multiple Access
FDX  Full-Duplex Transmission
FE  Front End
FEP  Front End Processor
FF  Form Feed
FF  Flip-Flop
FFT  Fast Fourier Transform
FIFO  First-In First-Out
FILO  First-In Last-Out
FLOPS  Floating-point Operations Per Second
FM  Frequency Modulation
FPGA  Field Programmable Gate Array
FPU  Floating Point Unit
FRU  Field-Replaceable Unit
FSK  Frequency Shifty Keying
FTP  File Transfer Program

G - H - I
   G  Giga (109 )
GAs  Gallium Arsenide
GFLOPS  Billions (10^9) of FLOating Point Operations Per Second ("Giga-Flops")
GHz  Giga Hertz((109     Hz)
GNU  Gnu's Not Unix
GPIB  General Purpose Interface Bus
GUI  Graphical User Interface
H  Henries
H  Magnetic Force
HD  High Density
HDD  Hard Disk Drive
HDX  Half-Duplex Transmission
HFS  Hierarchical File System
HP Hewlett-Packard
I  Current
HPIB  Hewlett-Packard Interface Bus
I/O  Input / Output
IBM  International Business Machines Corp.
IC  Integrated Circuit
IDC  Insulation Displacement Connector
IDE  Integrated Device Electronics
IEEE  Institute of Electrical and Electronic Engineers
IMP  Interface Message Processor
IP  Internet Protocol
IPC  InterProcess Communication
IRQ  Interrupt ReQuest I
SA  Industry Standard Architecture
ISDN  Integrated Services Digital Network
ISO  International Standards Organization
ISP ISP  Internet Service Provider

J - K - L
  J  Joules unidade de energia  
K  Kilo= (103 )
KVA  Kilo Volt-Amps
LAN  Local Area Network
LAP  Link Access Protocol
LAPB  Link Access Protocol Balanced
LCD  Liquid Crystal Display
LED  Light Emitting Diode     (diodo emissor de luz)
LF  Line Feed
LIFO Last In First Out
LSB  Least Significant Bit (or Byte)
LSI  Large Scale Integration
LUN  Logical Unit Number     

   M  Mega (106 )
m  milli (10-3 )
MAN  Metropolitan Area Network
MB  Mega Bytes= 106 Bytes
MBR  Master Boot Record
MCA  Micro Channel Architecture
MCGA  Multi-Color Graphics Array
MCM  Multi-Chip Module
mF  micro Farads=10-6     F
MFLOPS  Millions of FLOating Point Operations per Second ("MegaFlops")
MFM  Modified Frequency Modulated
MHz  MegaHertz= 106     Hz
MIDI  Musical Instrument Digital Interface
MIPS  Millions of Instructions per Second
MMU  Memory Management Unit
MNP  Microcom Network Protocol
MODEM  MOdulator / DEModulator
MOPS  Millions of Operations Per Second
MOS  Metal-Oxide Semiconductor
MSB  Most Significant Bit (or Byte)
MSDOS  Microsoft Disk Operating System
MSI  Medium Scale Integration
MTBF  Mean Time Between Failures

N - O
   n  nano=(10-9 )
NAND  Not And
N/C  No-Connect
NBS  National Bureau of Standards
NEMA  National Electrical Manufacturers Association
NFS  Network File System
NIC  Network Interface Card
NIST  National Institute of Standards and Technology
NMI  Non-Maskable Interrupt
NMOS  Negatively doped
Metal-Oxide     Semiconductor
NOP  No OPeration
NSF  National Science Foundation
NVRAM  NonVolatile Random Access Memory
OCR  Optical Character Recognition
ODI  Open Datalink Interface
OEM  Original Equipment Manufacturer
OS  Operating System
OSF  Open Software Foundation
OSI  Open Systems Interconnect     

   p  pico
PAL  Programmable Array Logic
PLA  Programmable Logic Array
PB  Push Button
PBX  Private Branch eXchange
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  Professional Engineer
PGA  Pin Grid Array
PIA  Peripheral Interface Adapter
PIC  Programmable Interrupt Controller
PIO  Programmed Input/Output
PLCC  Plastic Leaded Chip Carrier PLD  Programmable Logic Device PLL  Phase Locked Loop PMOS  Positively doped Metal-Oxide Semiconductor POP  Post Office Protocol (email) POST  Power On Self Test POTS  Plain Old Telephone Service PPP  Point-to-Point Protocol PQFP  Plastic Quad-FlatPack PROM  Programmable Read-Only Memory PSTN  Public Switched Telephone Network     

Q - R
   Q  Charge
QAM  Quadrature Amplitude Modulation
QFP  Quad-FlatPack
R  Resistance
RAM  Random Access Memory
RAS  Row Address Strobe
RCA  Radio Corporation of America
R/C Radio Control
RC  Resistor - Capacitor
RF   Radio Frequency
RFC  Radio Frequency Choke
RFI  Radio Frequency Interference
RFP  Request For Proposal
RFQ  Request For Quotation
RI   Ring Indicator
RISC  Reduced Instruction-Set Computer
RLL  Run Length Limited
RMS  Root Mean Square
ROM  Read-Only Memory
RPM  Revolutions Per Minute
RS   Recommended Specification
RTC  Real Time Clock
RTS  Request To Send     

   S  Siemens
SASI  Shugart Associates Standard Interface
SCSI  Small Computer Systems Interface
SD   Single Density
SDLC   Synchronous Data Link Control
SIMM  Single Inline Memory Module
SIP   Single Inline Package
SLIP   Serial Line Internet Protocol
SMD  Surface Mount Device
SMT  Surface Mount Technology
SNA  System Network Architecture
SNR  Signal to Noise Ratio
SOT  Small Outline Transistor
SOIC  Small Outline Integrated Circuit
SPOOL   Simultaneous Peripheral Operation On Line
SPST  Single-Pole Single-Throw (switch)
SPT  Sectors Per Track
SQE  Signal Quality Error
SRAM  Static Random Access Memory
SS   Single Sided
STDM  Synchronous Time Division Multiplexing
STN  Super Twisted Nematic
STP  Shielded Twisted Pair
STU  Streaming Tape Unit
SVGA  Super Video Graphics Array

  TCM  Trellis Code Modulation
TCP/IP  Transmission Control Protocol / Internet Protocol
TDM  Time Division Multiplexing
TDMA  Time Division Multiple Access
TI   Texas Instruments
TIA  Telecomm. Industry Assocation
TPI  Tracks Per Inch
TSR  Terminate and Stay Resident
TTL  Transistor-Transistor Logic
TUV  Technischer Ueberwachuags Verein

U - V
   UV  Ultra Violet
UART  Universal Asynchronous Receiver/Transmitter
UDP  User Datagram Protocol
UMB  Upper Memory Block
UPS  Uninterruptible Power Supply
UTP  Unshielded Twisted Pair
UUCP  Unix to Unix Copy Program
VCR  Video Cassette Recorder
VESA   Video Enhanced Standards Association
VGA  Video Graphics Array
VLB  VESA Local Bus
VLSI  Very Large Scale Integration
VM   Virtual Memory
VME  Versa Module Eurocard
VRAM  Video Random Access Memory
VTR  Video Tape Recorder     

W - X - Y - Z
   W  Watts=1J/s
WAN  Wide Area Network
WATS  Wide Area Telephone Service
 WORM  Write-Once Read-Many
WWW  World Wide Web
XGA  eXtended Graphics Array
XMS  Extended Memory Specification
XOR  Exclusive-Or
Y  Admittance
Z  Impedance
ZIF  Zero Insertion Force    
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