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== Details ==
[[File:MOS 6502AD 4585 top.jpg|thumb|MOS 6502, a popular microprocessor from 1975]]
An 8-bit register can store 2<sup>8</sup> different values. The [[range (computer programming)|range]] of [[integer]] values that can be stored in 8 bits depends on the [[Integer (computer science)#Value and representation|integer representation]] used. With the two most common representations, the range is 0 through 255 {{nowrap|(2<sup>8</sup> − 1)}} for representation as an ([[signedness|unsigned]]) [[binary number]], and −128 {{nowrap|(−1 × 2<sup>7</sup>)}} through 127 {{nowrap|(2<sup>7</sup> − 1)}} for representation as [[two's complement]].
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