ua;
UAN;
UART;
UAT;
UAW;
UBASIC;
UBD;
ubiquitous computing;
uC++;
UCB;
UCHO;
U-Code;
UCP;
UCS;
UCSD Pascal;
UCS transformation format;
UCX;
udb;
UDDI;
UDF;
UDMA;
UDP;
uemacs;
UFO;
UFO bug;
ug;
UGLIAC;
UHELP;
UI;
uid;
UIDL;
UIL;
UIMS;
UIMX;
UIS;
uk;
UKC;
UKERNA;
UKUUG Ltd.;
ULCC;
Ulm's Modula-2 System;
ULP;
Ultra64;
Ultra-ATA;
Ultra DMA;
Ultra-SCSI;
Ultrix;
um;
UMB;
UMB Scheme;
UMDL;
UML;
uML;
UMTS;
unary;
UNC;
UNCL;
UNCOL;
uncompression;
uncountable;
uncurry;
uncurrying;
undefined;
undefined external reference;
underflow;
Undernet;
underscore;
under the hood;
undocumented feature;
U-NET Limited;
unfold;
unfold/fold;
UNI;
unicast;
Unicode;
UniCOMAL;
unicos;
Uniface;
unification;
Unified Han;
Unified Modeling Language;
unifier;
UNIFORM;
Uniform Naming Convention;
Uniform Resource Citation;
Uniform Resource Locater;
Uniform Resource Locator;
Uniform Resource Name;
Uniform Resource Number;
Unify;
unify;
Unify Corporation;
Unihan;
uninstaller;
uninteresting;
Uninterruptible Power Supply;
union;
Unipalm Group plc;
Unipress Software, Inc.;
uniprocessor;
UNIQUE;
Unique ID Listing;
unique key;
unique sales point;
Unir Tech;
UNISAP;
Unisys Corporation;
United Kingdom Unix Users Group;
United Technologies Research Cente;
Unit Separator;
unit testing;
UNITY;
Univac;
Universal algebra;
Universal Asynchronous Receiver/Transmitter;
Universal Character Set;
Universal Communications X;
Universal Computer Protocol;
Universal Debugger;
Universal Description, Discovery, and Integration;
Universal Disk Format;
Universal Naming Convention;
universal quantifier;
Universal Resource Identifier;
Universal Resource Locator;
Universal Serial Bus;
universal thunk;
Universal Time;
Universal Time Coordinated;
universe of discourse;
University of Arizona;
University of California at Berkeley;
University of Durham;
University of East London;
University of Edinburgh;
University of Hawaii;
University of Iceland;
University of London Computing Centre;
University of Michigan;
University of Michigan Digital Library Project;
University of Minnesota;
University of Nijmegen;
University of Pennsylvania;
University of Tasmania;
University of Twente;
Unix;
Unix box;
Unix brain damage;
Unix conspiracy;
Unix International;
Unixism;
Unix man page;
Unix manual page;
Unix System V;
Unix to Unix Copy;
UnixWare;
Unix weenie;
Unix wizard;
unnormalised;
unproto;
unshar;
unshielded twisted pair;
unswizzle;
until;
untyped;
unwind-protect;
unwind the stack;
UN*X;
unzip;
up;
uparrow;
UPenn;
upgradability;
upgrade;
upgradeability;
upload;
UPMAIL Tricia Prolog;
upper bound;
Upper Layer Protocol;
upper memory block;
Upper Side-Band modulation;
Upright Database Technology AB;
UPS;
upstream;
upthread;
upward closure;
Uranus;
urban legend;
URC;
urchin;
URI;
URL;
URL forwarding;
URL redirection;
URN;
URouLette;
US;
us;
usability;
USAModSim;
usa.net;
US-ASCII;
USB;
USB 2.0;
USB Adapter Card Support;
USB drive;
USE;
Usenet;
Usenet news;
Usenetter;
USENIX;
user;
user acceptance testing;
user base;
User Brain Damage;
User Datagram Protocol;
user-friendly;
user id;
user identifier;
user interface;
user interface copyright;
User Interface Language;
user name;
User Network Interface;
user-obsequious;
user-unctuous;
Use the Source Luke;
USG Unix;
usim;
USL;
USP;
USR;
usr;
US Robotics;
U.S. Robotics, Inc.;
USSA;
UTC;
UTF;
UTF-8;
utility;
utility-coder;
utility program;
utility software;
UTOPIST;
UTP;
UTRC;
UTSL;
uucp;
UUCPNET;
uudecode;
uuencode;
UUNET PIPEX;
UUPC;
uy;
uz;