unit magnetic poleunit matrixunit operatorunit rampunit stepunit vectorunitaryunitized constructionunity gain frequencyunity power factorunity propertyunitycouplinguniversaluniversal asynchronous recivertransmitteruniversal bridgeuniversal digital loop transceiveruniversal jointuniversal mobile telecomm systemuniversal motoruniversal output transformeruniversal product codeuniversal product code scanneruniversal serial busuniversal synchronous asynchronous receiver transmitteruniversal timeuniversal time coordinatedunlatch instructionunlimitedunloadedunloaded antennaunloadingunmatchedunmodified scatterunmodulated grooveunpackunpolarized lightunquenched spark gapunstabilized antennaunstableunstable servountunedup and down lineup counterup down counterup down link symmetryupcupconverterupdateuplinkuplink shared channel
