?? | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
- UDF - User Defined Function
- UDP - User Datagram Protocol
- UHF - Ultra High Frequency
- ULSI - Ultra Large Scale Integration
- UMB - Upper Memory Block
- URL - Uniform Resource Locator
- UNIVAC - Universal Automatic Computer
- UPS - Uninterruptible Power Supply
- URL - Uniform Resource Locator
- USB - Universal Serial Bus
- UTP - Unshielded Twisted Pair
- UNIX - UNiplexed Information Computing System (UNICS) (later known as UNIX)