upper memory block
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upper memory block(storage)
(UMB) Up to 64 kilobytes of the expanded memory page frame above the first 64 kilobytes. The UMB can be used to store TSR programs or device drivers thereby freeing parts of the precious conventional memory. The UMB is provided by special memory manager programs; many EMMs can provide UMB as well.
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UMB(1) (Ultra Mobile Broadband) A high-speed 3G technology that was planned for next-generation CDMA2000 cellular systems. Based on OFDMA and IP, its major proponent was Qualcomm, which in late 2008 abandoned development in favor of Long Term Evolution (see LTE).
(2) (Upper Memory Block) See UMA.
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