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backing store

World English Dictionary

backing store

—n
	a computer storage device, usually a disk, that provides additional storage space for information so that it can be accessed and referred to when required and may be copied into the processor if needed

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Backing store is always a great word to know.

So is slumgullion. Does it mean:

a stew of meat, vegetables, potatoes, etc.

a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.

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Computing Dictionary

backing store definition

1. Computer memory, usually magnetic disks, storing data and programs. Sections of this information can then be copied into the main memory (RAM) for processing. Backing store is cheaper but RAM is faster. Such a hierarchy of memory devices allows a trade-off between performance and cost.
2. Character storage in memory or on disk, as opposed to displayed or printed characters. This distinction is important where the visual ordering of characters differs from the order in which they are stored, e.g. bidirectional or non-spacing layout.
In a Unicode encoding, text is stored in sequential order in the backing store. Logical or backing store order corresponds to the order in which text is typed on the keyboard (after corrections such as insertions, deletions, and overtyping). A text rendering process converts Unicode text in the backing store to readable text.
["The Unicode Standard: Worldwide Character Encoding", Version 1.0, Vol. 1. Addison-Wesley, 1991].
(2001-02-25)

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