BACKING STORE
\bˈakɪŋ stˈɔː], \bˈakɪŋ stˈɔː], \b_ˈa_k_ɪ_ŋ s_t_ˈɔː]\
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1. Computer memory, usually magnetic disks,storing data and programs. Sections of this information canthen be copied into the main memory (RAM) for processing.Backing store is cheaper but RAM is faster. Such a hierarchyof memory devices allows a trade-off between performance andcost.2. Character storage in memory or on disk, as opposedto displayed or printed characters. This distinction isimportant where the visual ordering of characters differs fromthe order in which they are stored, e.g. bidirectional ornon-spacing layout.In a Unicode encoding, text is stored in sequential order inthe backing store. Logical or backing store order correspondsto the order in which text is typed on the keyboard (aftercorrections such as insertions, deletions, and overtyping). Atext rendering process converts Unicode text in the backingstore to readable text.["The Unicode Standard: Worldwide Character Encoding", Version1.0, Vol. 1. Addison-Wesley, 1991].
By Denis Howe
Word of the day
hydromorphic
- [Greek] Structurally adapted to an aquatic environment, as organs of water plants.