U
| UA User Asynchronous
| |
| UAN Universal Application Network Standards based architecture for integration that runs on most of the main integration servers
| |
| UAP Upper Address Part
| |
| UAR Universal Asynchronous Receiver
| |
| UART Universal Asynchronous Receiver Transmitter Chip used to drive a serial port in a PC |
| UBR |
Unspecified Bit Rate
| UCD |
Upstream Channel Descriptor
| UDB |
Universal DataBase
| UDDI |
Universal Description Discovery and Integration
Format for describing and integrating internet business
| UDP |
User Datagram Protocol
| UDP Universal Datagram Packets Connectionless internet protocol with no guarantee of delivery
| |
| UHF Ultra High Frequency
| |
| UI User Interface
| |
| UIAC Unlimited Inquiry Access Code
| |
| UID User IDentification
| |
| UIMSBF Unsigned Integer Most Significant Bit First
| |
| UIO Universal Input Output
| |
| UMB Upper Memory Block Memory between 640k and 1M in DOS |
| UML |
Unified Modeling Language
| UMTS |
Universal Mobile Telecommunications System
Offers third generation broadband packet based transmission of text, digitised voice, video and multimedia at data rates upto 2 Mbps
| UNC Universal Naming Convention
| |
| UNI User Network Interface
| |
| UPC Usage Parameter Control
| |
| UPS Un-interruptible Power Supply A device that continues to supply power after primary supply outage.
| |
| URI Uniform Resource Identifier
| |
| URL Uniform Resource Locator The standard address of a location on the Internet
| |
| URN Uniform Resource Name
| |
| USART Universal Synchronous Asynchronous Receiver Transmitter
| |
| USB Universal Serial Bus
| |
| USCW Uncacheable Speculative Write Combining
| |
| USOC Universal Service Order Codes
| |
| USPARC Ultra Scalable Processor Architecture Reduced instruction set Computer
| |
| USTA United States Telephone Association
| |
| UT Upper Tester
| |
| UTC Universal Coorinated Time
| |
| UTP Unshielded Twisted Pairs |