[SYMBOL] [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] UARTs (Universal Asynchronous Receiver/Transmitter) (universal asynchronous receiver/transmitters) RS-232C ports 2nd 3rd UDF (Universal Data Format) UHF ( Ultra High Frequency) Ultra High Frequency (UHF) ultra large-scale integration. [See ULSI] ultra- low-voltage microprocessors 2nd 3rd Ultra160 SCSI Ultra320 SCSI UltraDMA modes 2nd 3rd UMA (Unified Memory Architecture) 2nd UMA (Unified Memory Architecture) 2nd 3rd UN-II (Unlicensed National Information Infrastructure) unbuffered SDRAM under-voltage protection from 2nd underrun 2nd CD-Rs 2nd underscans CRTs 2nd 3rd 4th unidirectional microphone unidirectional microphones Unified Memory Architecture (UMA) Unified Memory Architecture. [See UMA]2nd [See UMA] Uniform Resource Locators. [See URLs] Univac Universal ADSL Working Group Universal Asynchronous Receiver/Transmitter. [See UARTs] Universal Asynchronous Receiver/Transmitters universal asynchronous receiver/transmitters. [See UARTs] universal power supplies (UPSs) Universal Serial Bus (USB) Universal Serial Bus. [See USB]2nd [See USB] Unix 2nd Unlicensed National Information Infrastructure. [See UN-II] Unlocked mode AT Attachment security unshielded twisted pairs. [See UTPs] upgrades BIOS 2nd 3rd upper memory (real mode memory) UPSs capacity 2nd interfaces 2nd UPSs (universal power supply) URLs (Uniform Resource Locators) 2nd USB 2nd 3rd (Universal Serial Bus) bus controllers cable 2nd 3rd connectors 2nd 3rd function hosts hubs Plug-and-Play ports protocol 2nd 3rd 4th 5th data packets 2nd handshake packets 2nd 3rd token packets 2nd 3rd speed standards USB (Universal Serial Bus) USB clock USB port keyboards 2nd 3rd USB speakers 2nd 3rd USB-based NICs user interfaces as modem hardware USLI (ultra large-scale integration) utilities 2nd 3rd 4th UTPs (unshielded twisted pairs) |