48-bit computing: Difference between revisions

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{{UnreferencedMore references|date=August 2007}}

{{Computer architecture bit widths}}

In [[computer architecture]], '''48-bit''' [[integer (computer science)|integer]]s can represent 281,474,976,710,656 (2⁴⁸ or 2.814749767×10¹⁴) discrete values. This allows an [[Unsigned integer|unsigned]] binary integer range of 0 through 281,474,976,710,655 (2⁴⁸ − 1) or a [[Signed number representations|signed]] [[two's complement]] range of -140−140,737,488,355,328 (-2−2⁴⁷) through 140,737,488,355,327 (2⁴⁷ − 1). A 48-bit [[memory address]] can directly address every byte of 256 [[Terabyte|terabytesterabyte]]s of storage. 48-bit can refer to any other [[Data (computing)|data]] unit that consumes 48 [[bit]]s (6 [[octet (computing)|octets]]) in width. Examples include 48-bit [[Central processing unit|CPU]] and [[Arithmetic logic unit|ALU]] [[computer architecture|architecture]]s are those that are based on [[processor register|register]]s, [[address bus]]es, or [[Bus (computing)|data bus]]es of that size.

==Word size==

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The Honeywell [[DATAmatic 1000]],

[[Honeywell 800|H-800]],

the [[MANIAC II]],

the [[MANIAC III]],

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[http://ed-thelen.org/comp-hist/BRL61-m.html#MERLIN "MERLIN"].

</ref>

the [[Philco Philco_computerscomputers#CXPQ | Philco CXPQ]],

the [[Ferranti Orion]],

the [[Telefunken Rechner TR 440]],

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==Notes==

{{Notelist}}

==References==

{{Reflist}}

{{CPU technologies}}