| UXGA | Ultra eXtended Graphics Array [1600x1200 pixel] |
| XGA | Extended Graphics Array [IBM] |
| WXGA | Wide Extended Graphics Array |
| SXGA | Super Extended Graphics Array |
| EVGA | Extended Video Graphics Array/Adapter |
| MCGA | MultiColor Graphics Array |
| VGA | Video Graphics Array |
| EGA | Enhanced Graphics Adaptor/Array |
| SVGA | Super Video Graphics Array |
| IGA | Integrated Graphics Adaptor/Array |
| MVGA | Monochrome Video Graphics Array |
| CVGA | Color Video Graphics Array |
| MCGA | Multi Colour Graphics Adaptor/Array |
| XPLA | Extended Programmable Logic Array |
| ULF | Ultra Low Floor [Ultra-Niederflur-Strassenbahn] |
| 4D | Quad Density [engl.] Vierfache Speicherdichte |
| QBM | Quad Band Memory |
| QD | Quad Density, Quick Disconnection |
| TQFP | Thin Quad Flat Package |
| DSQD | Double Sided Quad Density [Floppy] |
| U | Ultra |
| ULV | Ultra Low Voltage |
| UWB | Ultra Wide Band |
| UTO | Ultra-Thin Oxide |
| uc2 | Ultra Compressor Datei eine Dateiendung |
| USW | Ultra Short Wave |
| USN | Ultra-Sonic Nebulization |
| USM | Ultra Sound Microscopy |
| UPA | Ultra Port Architecture [Sun] |
| ULSN | Ultra Low Speed Networking |
| UFS | Ultra Fast Switching |
| ULEV | Ultra Low Emission Vehicle |
| UMPC | Ultra Mobile Personal Computer |
| ULSI | Ultra Large Scale Integration |
| UHF | Ultra High Frequency [300-3000 MHz] |
| UDMA | Ultra Direct Memory Access |
| EUV | Extreme Ultra Violet [Lithography] |
| UDO | Ultra Density Optical [storage, disc] |
| UTMA | Ultra Thin Client Multiple Access |
| UHP | Ultra High Power electric arc steelmaking |
| PGA | Pin Grid Array |
| PDA | PhotoDiode Array |
| VLBA | Very Long Baseline Array |
| LCA | Logic Cell Array |
| ULA | Uncommitted Logic Array |
| LAB | Logic Array Block |
| ARP | Array Processor [engl.] |
| HAL | Hard Array Logic |
| NORSAR | Norwegian Seismic Array |
| LDA | Linear Diode Array |