硬盘容量的计算方法

Decimal term	Abbreviation	value	Binary term	Abbreviation	value	%Larger
Kilobyte	KB	103	Kibibyte	KiB	210	2%
megabyte	MB	106	mebibyte	MiB	220	5%
gigabyte	GB	109	gibibyte	Gib	230	7%
terabyte	TB	1012	tebibyte	TiB	240	10%
petabyte	PB	1015	Pebitbyte	Pib	250	13%
exabyte	EB	1018	exbibyte	EiB	260	15%
zettabyte	ZB	1021	Zebibyte	ZiB	270	18%
yottabyte	YB	1024	yobubyte	YiB	280	21%

Figure 1.1 The 2^x  vs.10^y ambiguity was resolved by adding a binary notation for all the common size terms. 

ambiguity /æmbigj'u:ti/(ambiguities)
[N-var] If you say that there is ambiguity in something,
you mean that it is unclear or confusing, or it can be understood
in more than one way.
There is considerable ambiguity about what this party of the agreement
actually means.

There is considerable ambiguity about what this part of the agreement actually means. 

In last common, we note how much larger the binary term is than its corresponding decimal term, which is compounded as we head down the chart. 

compounded // [adj]  v-link adj of n   If something is compounded of different things, it is mixture of those things.(Formal)

These prefixes works 

for bits as well as bytes, so gigabit(Gb) is 10⁹ bits while gibibits(Gib) is 2³⁰ bits. 

prefix /pri:fiks/ (prefixes)

1. A prefix is a letter or group of letters, for example '-un' or 'multi-' which is added to the be begining of a word in order to form a different word. For example, the prefix 'un' is added to 'happy'to form 'unhappy'.

2.[N-count] A prefix is one or more numbers or letters added to the beginning of a code number to indicate,  for example, what area something belongs to                                                                                                                         

To telephone from the US use the prefix 01133 before the numbers given here...