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U
UDDI 通用描述、探索與整合
UDP User Datagram Protocol
UIM 用戶識別晶片
ULSI Ultra Large Scale Integration
UltraDMA Hardware
Ultrafast Science 超快科學
UMA Upper Memory Area
UML Unified Modeling Language
UMS
Unicode Data
UNIX 作業系統
UnPBX CTI，電話電話整合
unsolicited 未經同意的；不請自來的
UPS Uninterruptible Power Supply
USB Universal Serial Bus
User Interface Computer
Utility Computing 公用運算
UTP Unshield Twisted Pair
UUENCODE Unix-to-Unix Encode
