| U | |||
| U | Uranium | ||
| UAProf | User Agent Profile | ||
| UART | Universal Asynchronous Reciever/Transmitter | ||
| UBM | Under-bump metallurgy | ||
| UCF | Universal Conduction Fluctuations | ||
| UCL | Upper confidence limit; Upper control limit | ||
| UDDI | Universal Description, Discovery and Integration | ||
| UDP | User Datagram Protocol | ||
| UEL | Upper explosive limit | ||
| UF | Ultra-Filtration | ||
| UFL | Upper Flammable Limit | ||
| UFPT | Ultra Fine Pitch Technology | ||
| UHB-LED | Ultra-High Brightness LED | ||
| UHF | UltraHigh Frequency | ||
| UHP | UltraHigh Purity | ||
| UHV | Ultra High Vacuum | ||
| UI | User Interface | ||
| UID | User IDentification | ||
| UIM | User Identification Module | ||
| ULA | Uncommitted logic array | ||
| ULPA | Ultra-low particulate air | ||
| ULSI | Ultra Large Scale Integrated (circuit) | ||
| UMID | Unique Material IDentifier | ||
| UML | Unified Modeling Language | ||
| UMPS | Modeling language for CPU cores | ||
| UMTS | Universal Mobile Telecommunications Service | ||
| Une | Unnilnonium | ||
| Uno | Unniloctium | ||
| Uns | Unnilseptium | ||
| UPH | Units per hour | ||
| UPI | Universal Programmable Peripheral Interface | ||
| UPS | Ultraviolet Photoelectron Spectroscopy; Uninterruptible Power Supply | ||
| UPW | UltraPure Water | ||
| URI | Uniform Resource Identifier | ||
| URL | Uniform Resource Locator | ||
| U/S | UltraSonic | ||
| USART | Universal Synchronous/Asynchronous Receiver/Transmitter | ||
| USB | Universal Serial Bus | ||
| USG | Undoped Silicate Glass | ||
| USIC | User-Specific Integrated Circuit | ||
| USOP | Ultra small outline package | ||
| UTF | Unicode Transformation Format | ||
| UTP | Unshielded Twisted Pair | ||
| UTPT | Unshielded Twisted Pair Transceiver | ||
| UTQFP | Ultra-Thin Quad Flat-Pack | ||
| UTRAN | UMTS Terrestrial Radio Access Network | ||
| UTS | Ultra-Thin Silicon | ||
| UTT | Unattenuated | ||
| UTW | Ultra-Thin Window for EDS detectors in TEMs. | ||
| UUT | Unit Under Test | ||
| UV | UltraViolet | ||
| UVF | UnVerified Failure | ||
| UV-PROM | Ultra Violet Programmable Read Only Memory | ||
| UWB | Ultra WideBand | ||
| V | |||
| V | Vanadium; Volt | ||
| VAC | Volts alternating current | ||
| VAD | Vertical Axial Deposition (Sumitomo) | ||
| VAR | Value added reseller | ||
| VASE | Variable angle spectroscopic ellipsometry | ||
| VB | Valence Band; Vertical Bridgman | ||
| VBAP | Voice Band Audio Processor | ||
| VBM | Valence Band Maximum | ||
| VBR | Breakdown Voltage | ||
| VCA | Voltage Controlled Amplifier (or Attenuator) | ||
| Vcc | Main Power Supply (in a circuit) | ||
| VCML | Vodafone Content Markup Language | ||
| VCO | Voltage Controlled Oscillator | ||
| VCSEL | Vertical Cavity Surface Emitting Laser | ||
| VCXO | Voltage Controlled Crystal Oscillator | ||
| VCz | Vapor-pressure-controlled Czochralski | ||
| VD | Drain Voltage | ||
| VDC | Volts direct-current | ||
| Vdd | Secondary power supply (in a circuit) | ||
| VDP | Van der Pauw | ||
| VDS | Vapor distribution system | ||
| VDSL | Very high bit-rate Digital Subscriber Line | ||
| Vee | Negative power supply (in a circuit) | ||
| VESA | Video Electronics Standards Association | ||
| VFD | Vacuum Fluorescent Display | ||
| VFEI | Virtual factory equipment interface | ||
| VFM | Variable Frequency Microwave | ||
| VGA | Variable Gain Amplifier | ||
| VGF | Vertical Gradient Freeze | ||
| VGS | Video Guidance Sensor | ||
| VHDL | VHSIC Hardware Description Language | ||
| VHF | Very high frequency | ||
| VHN | Vickers hardness number | ||
| VHP | Very high productivity | ||
| VHORG | Vertically and horizontally organized grid | ||
| VHS | Variable hard sphere | ||
| VHSIC | Very high-speed integrated circuit | ||
| VIGS | Virtual Induced Gap States | ||
| VISC | Video Instruction Set Computing | ||
| VLA | Very large array | ||
| VLE | Vapor levitation epitaxy | ||
| VLF | Vertical laminar flow | ||
| VLIW | Very Long Instruction Word | ||
| VLL | Video Lead Locator | ||
| VLSI | Very Large Scale Integrated (circuit) | ||
| VM | Virtual machine | ||
| VME | Versa micromodule extension; Virtual manufacturing enterprise | ||
| VML | Vector Markup Language | ||
| V-MOS | V-groove metal-oxide semiconductor | ||
| VMW | Vertically modulated well | ||
| VNA | Vector Network Analyzer | ||
| VOC | Volatile organic compound | ||
| VoD | Video on Demand | ||
| VPD | Vapor phase desorption; Vapor phase decomposition | ||
| VPD-ICPMS | Vapor phase decomposition-inductively-coupled plasma mass spectroscopy | ||
| VPE | Vapour Phase Epitaxy | ||
| VPIN | Vertical PIN diode | ||
| VPN | Virtual Private Network | ||
| VPO | Pinch-Off Voltage | ||
| V-pol | Vertical polarization | ||
| Vpp | Programmable power supply (in a circuit) | ||
| VRAM | Video RAM | ||
| VRG | Vibratory Rate Gyro | ||
| VRP | Virtual Rapid Prototyping | ||
| VSAG | VHDL Standardization and Analysis Group (IEEE) | ||
| VSAT | Very Small Aperture Terminal | ||
| VSI | Virtual Socket Interface | ||
| VSOIC | Very Small Outline surface mounted IC | ||
| VSPD | Variable Sensitivity PhotoDetector | ||
| VSS | Variable Soft Sphere | ||
| VSWR | Voltage SWR | ||
| VTP | Vertical Thermal Processor | ||
| VTVM | Vacuum-Tube VoltMeter | ||
| VVA | Variable Voltage Attenuator | ||
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