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-- U ---

UA
Unnumbered Acknowledgement
UA
User Agent (MHS, OSI)
UAA
UnternehmensAnwendungsArchitektur (IM)
UAB
Unix Appletalk Bridge (Apple, AppleTalk, Unix)
UAC
Universal Access Control (IBM)
UADPS
Uniform Automatic Data Processing System
UAE
Unknown / Unrecoverable Application Error (Windows)
UAF
User Authorization File
UAPDU
User Agent Protocol Data Unit (PDU)
UART
Universal Asynchronous Receive and Transmit
UAS
UnAvailable Seconds (DS1/E1, DS3/E3)
UBA
UniBus Adapter (DEC)
UBNI
Ungermann-Bass Network Interface
UBR
Unspecified Bit Rate (ATM, CBR, VBR, ABR, QOS)
UCE
Unsolicited Commercial E-mail (Usenet, Spam)
UCI
User-Computer Interface
UCLA
University of California at Los Angeles (org., USA)
UCR
Under Color Removal (DTP)
UCS
Universal [multiple-octet] coded Character Set (ISO, IEC, DIS 10646)
UCS
Universal Classification System
UCSB
University of California at Santa Barbara (org. USA)
UDB
Universal Database Server (IBM, DB)
UDC
Universal Decimal Classification
UDF
Universal Disc Format (CD, OSTA)
UDF
User Defined Function
UDK
UmweltDatenKatalog (NUIS-SH)
UDLI
??? [hardware desription language] (HDL), "UDL/I"
UDMA
Ultra Direct Memory Access (DMA, ATA)
UDP
User Datagram Protocol (Internet, RFC 768)
UDPIP
User Datagram Protocol / Internet Protocol, "UDP/IP"
UDT
User-defined DataType (DB)
UDVM
Universal Data Voice Multiplexer
UEV
User End of Volume
UFS
Universal File System
UFS
Unix File System (Unix)
UFST
Universal Font Scaling Technology (Agfa)
UHF
Ultra High Frequency
UHL
User Head Label
UI
Unix International (manufacturer, Unix)
UI
User Interface
UIC
User Identification Code
UID
Unit IDentifier (cryptography, EES)
UID
User IDentification
UIL
User Interface Language
UIMS
User Interface Management System
UIS
UmweltInformationsSystem
UISRM
User Interface System Reference Model
UKERNA
United Kingdom Education and Research Networking Association (org., UK)
ULA
Uncommitted Logic Array
ULANA
Unified Local Area Network Architecture
ULCC
University of London Computer Center (org., UK)
ULP
Upper Layer Protocols (FC)
ULSI
Ultra Large Scale Integration
UMA
Unified Memory Architecture
UMA
Universal Measurement Architecture (Unix, X/Open)
UMA
Upper Memory Area (Intel)
UMADS
Universal Measurement Architecture Data Storage (UMA)
UMB
Upper Memory Block (Intel, UMA)
UMC
United Microelectronics Corporation (manufacturer)
UME
UNI Management Entity (UNI, ILMI)
UML
Unified Method Language (CASE)
UMTS
Universal Mobile Telecommunications System (IN, Mobile Systems)
UNA
Universal Network Architecture
UNARP
UNsolicited Address Resolution Protocol (ARP, RFC 1868)
UNC
Universal Naming Convention (IBM, MS, Novell, LAN)
UNCID
UNiform rules of Conduct for Interchange of Trade data by teletransmission (EDIFACT)
UNCLE
Unix Net for Computer security in Law Enforcement (org., USA, Unix), "U.N.C.L.E."
UNEDIFACT
United Nations EDIFACT (ISO 9735, EDIFACT), "UN/EDIFACT"
UNGTDI
United Nations Guidelines for Trade Data Interchange (UN/EDIFACT, predecessor), "UN/GTDI"
UNI
Universal Network Interface (Cogent)
UNI
User Network Interface
UNIVAC
UNIVersal Automatic Computer
UNMA
Unified Network Management Architecture
UNSM
United Nations Standard Message, (UN/EDIFACT)
UNTDED
United Nations Trade Data Elements Directory (EDIFACT)
UNTDID
United Nations Trade Data Interchange Directory (EDIFACT)
UP
Uni Processor [system]
UPA
??? (Sun, SMP)
UPAM
User Primary Access Method (BS2000)
UPC
Universal Product Code (EAN)
UPC
Usage Parameter Control (UNI, ATM)
UPL
User Program Language
UPM
Umdrehungen Pro Minute (HDD)
UPM
User Profile Management (IBM)
UPN
Umgekehrte Polnische Notation
UPP
Universal Procedure Pointer (AE, Apple)
UPPS
Universal Portable Protocol Stack / Support (Schneider & Koch)
UPS
Uninterruptable Power Supply
UPS
Unix Print Services (Unix)
UPT
Universal Personal Telecommunications (IN)
UPT
Universelle Personengebundene Telekommunikation (IN)
URA
Uniform Resource Agent (WWW)
URC
Uniform Resource Citation (WWW)
URC
Uniform Resources Characteristics (URI, WWW)
URI
Uniform Resource Identifier (WWW, RFC 1630)
URL
Uniform Resource Locator (WWW, RFC 1738)
URN
Uniform Resource Name (WWW, RFC 1737)
URSN
Unique Resource Serial Number (URI, WWW)
US
Unit Separator (BTX, VPCE)
USA
United Software Association (org., USA)
USACNII
US Advisory Council on the National Information Infrastructure (org., USA)
USART
Universal Synchronous Asynchronous Receiver / Transmitter (IC)
USB
Universal Serial Bus (Intel)
USCP
Unicos Station Call Processor [protocol] (Cray, MPP)
USD
User's Supplementary Documents (BSD, Unix)
USDC
Universal Switched Data Capability
USDN
United States Digital Network
USENET
USErs' NETwork (Internet)
USG
Unix Support Group (org., Unix)
USITA
United States Independent Telephone Association (org., USA)
USL
Unix Systems Laboratories (AT&T, Unix)
USMTF
United States Message Text Format (USA)
USP
User Stack Pointer
USR
U.S. Robotics (manufacturer)
USR
User Service Routines
USRT
Universal Synchronous Receiver/Transmitter (IC)
USTA
United States Telephone Association (org., USA)
USV
Unterbrechungsfreie Strom-Versorgung
USWC
Uncached Speculative Write Combining (CPU)
UT
Universal Time [+0000] (TZ, GMT)
UT
Upper Tester
UTC
Universal Time Coordinated (DCE)
UTC
Universal Time Coordinates [+0000] (TZ, GMT)
UTI
Universal Text Interchange
UTL
User Trailer Label
UTLB
Unified Translation Look-aside Buffer (CPU)
UTM
Universal Transaction Monitor
UTM
Universeller TransaktionsMonitor (BS2000, Sinix, TP)
UTOPIA
Universal Test & Operations Physical layer Interface for ATM (PL, ATM)
UTP
Unshielded Twisted Pair [cable] (TP)
UTS
Universal Timesharing System
UTTC
Universal Tape-To-Tape Converter
UUCICO
Unix to Unix Copy Incoming Copy Outgoing (Unix)
UUCP
Unix to Unix Copy Protocol (Unix)
UUG
Unix User Group (org., Unix, user group)
UUID
Universal Unique IDentifier
UUT
Unit-Under-Test
UVL
User Volume Label


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