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This article presents a terminology timeline of units related to the binary prefixes for measurement of information and computer storage. Historically, computers have used two different approaches to memory addressing, binary and decimal.〔 This lengthy report describes many of the early computers mentioned here.〕 Early decimal computers included the ENIAC, UNIVAC 1, IBM 702, IBM 705, IBM 650, IBM 1400 series, and IBM 1620. Early binary addressed computers included Zuse Z3, Colossus, Whirlwind, AN/FSQ-7, IBM 701, IBM 704, IBM 709, IBM 7030, IBM 7090, IBM 7040, IBM System/360 and DEC PDP series. Decimal systems typically had memory configured in even decimal multiples, e.g., blocks of 100 and later 1000. The unit abbreviation K or k, if it was used, represented multiplication by 1000. Binary machine memory had sizes of powers of two or small multiples thereof. In this context K or k was sometimes used to denote multiples of 1024 units or just the approximate size, e.g., ''64K'' or ''65K'' for 65,536 (216). ==1790s== ;1793 : * The French ''Commission temporaire de Poids & Mesures rêpublicaines'', ''Décrets de la Convention Nationale'', proposes the binary prefixes ''double'' and ''demi'', denoting a factor of 2 (21) and (2-1) respectively, in 1793. The same report also proposes decimal prefixes like deci, centi and milli. ; 1795 : *The prefixes ''double'' and ''demi'' are part of the original metric system adopted by France in 1795. These were not retained when the decadic SI prefixes were internationally adopted by the 11th CGPM conference in 1960. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Timeline of binary prefixes」の詳細全文を読む スポンサード リンク
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