List of Computing and IT Abbreviations - U

U

• UAAG—User Agent Accessibility Guidelines
• UAC—User Account Control
• UART—Universal Asynchronous Receiver/Transmitter
• UAT—User Acceptance Testing
• UCS—Universal Character Set
• UDDI—Universal Description, Discovery, and Integration
• UDMA—Ultra DMA
• UDP—User Datagram Protocol
• UEFI—Unified Extensible Firmware Interface
• UHF—Ultra High Frequency
• UI—User Interface
• UL—Upload
• ULA—Uncommitted Logic Array
• UMA—Upper Memory Area
• UMB—Upper Memory Block
• UML—Unified Modeling Language
• UML—User-Mode Linux
• UMPC—Ultra-Mobile Personal Computer
• UNC—Universal Naming Convention
• UPS—Uninterruptible Power Supply
• URI—Uniform Resource Identifier
• URL—Uniform Resource Locator
• URN—Uniform Resource Name
• USB—Universal Serial Bus
• usr—user
• USR—U.S. Robotics
• UTC—Coordinated Universal Time
• UTF—Unicode Transformation Format
• UTP—Unshielded Twisted Pair
• UUCP—Unix to Unix Copy
• UUID—Universally Unique Identifier
• UUN—Universal User Name
• UVC—Universal Virtual Computer
• UX—User Experience