Short for ultra large scale integration, which refers loosely to placing more than about one million circuit elements on a single chip. The Intel 486 and Pentium microprocessors, for example, use ULSI technology. The line between VLSI and ULSI is vague.
Short for Universal Media Disc, it is a proprietary optical disc format developed by Sony for use with the Playstation Portable game console. At only 60mm in diameter, it can store 1.8GB of digital data. It is currently being used for holding Playstation Portable compatible games or movies. Sony had announced plans to open the […]
Short for upper memory block, a block of memory in the DOS upper memory area (UMA). UMBs are allocated and managed by a special memory manager such as EMM386.EXE, and can be used for TSRs and device drivers.
Short for Ultra Mobile PC, a UMPC is a mobile device that has been optimized for accessing online media and content for mobile users. UMPC devices are small enough to easily to carry, deliver long battery life for mobile connectivity, include multiple wireless connectivity options, and are also location-aware. UMPC devices contain a processor, button […]
Short for Unified Modeling Language, a general-purpose notational language for specifying and visualizing complex software, especially large, object-oriented projects. UML builds on previous notational methods such as Booch, OMT, and OOSE.
Short for Universal Mobile Telecommunications System, a 3G mobile technology that will deliver broadband information at speeds up to 2Mbit s/sec. Besides voice and data, UMTS will deliver audio and video to wireless devices anywhere in the world through fixed, wireless and satellite systems.