Yuan Yijun (bbbush) wrote,
Yuan Yijun
bbbush

Binary Prefix

http://en.wikipedia.org/wiki/Binary_prefix
http://en.wikipedia.org/wiki/IEC_60027-2
http://en.wikipedia.org/wiki/SI

大概就是说,过去没有合适的单位来表示 2^3n 就从 SI 借用了一些字母作前缀。现在有了新的标准,SI 前缀只用来表示 10^n 了。另外,前缀大小写没有区别。
Example : 300 GB = 279.5 GiB (= 0x117.6592E GiB = 0x45D96.4B8 MiB = 0x1176592E KiB = 0x45D964B800 bytes).

文档里提到了一句 Some have suggested that "k" be used for 1000, and "K" for 1024, but this cannot be extended to the higher order prefixes and has never been widely recognised.,《微型计算机》2006.03 有一大段加黑的编者按,写错了。

Wikipedia 那段 BP Usage Notes 写得不错
Tags: 小东西
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