计算机网络计算机存储单位定义问题（整合）

比特bit:二进制中的1或0

**速率: 连接在计算机网络主机数字信道上传送的速率，也称数据率 data rate
单位 b/s(bit/s bps) kb/s Mb/s Gb/s Tb/s
100M 以太网省略了b/s (额定速率)
k=10^3M 10^3M=G 10^3G=T
项目１

带宽：1频域称谓 2时域称谓: 信号具有的频带宽度 Hz kHz(赫千兆吉); 带宽用来表示网络的通信线路传送数据的能力，单位时间内从网络一点到另一点的最高数据率比特每秒 bit/s
在计算机领域数据量单位千兆吉代表的数值: 计算机使用字节作为度量单位，一字节（byte，B）8个比特; 千用K表示2^10=1024 2^20=MB 2^30=GB
Gbit/s是数据传送单位 1字节=8bit
1Gbit/s（0.125GB/s=128MB/s）
(MiB,MB是以2为底数的指数)
(Mbit,Mb是以10为底数的指数)

另附十进制单位（SI）二进制单位

kilo
The International System of Units (SI) defines the prefix kilo as 1000 (10^3); per this definition, one kilobyte is 1000 bytes.The internationally recommended unit symbol for the kilobyte is kB.

In historical usage in some areas of information technology, particularly in reference to digital memory capacity, kilobyte denotes 1024 (2^10) bytes. This arises from the powers-of-two sizing common to memory circuit design. In this context, the symbols K and KB are often used.

kibi

The kibibyte is a multiple of the unit byte for quantities of digital information. The binary prefix kibi means 2^10, or 1024; therefore, 1 kibibyte is 1024 bytes. The unit symbol for the kibibyte is KiB.

The unit was established by the International Electrotechnical Commission (IEC) in 1998,has been accepted for use by all major standards organizations, and is part of the International System of Quantities. The kibibyte was designed to replace the kilobyte in those computer science contexts in which the term kilobyte is used to mean 1024 bytes. The interpretation of the older term “kilobyte” to denote 1024 bytes, conflicting with the SI definition of the prefix kilo (1000), is still common.

十进制单位（SI）_______________________________________ 二进制单位

名字	缩写	次方	名字	缩写	次方
kilobyte	KB	10^3	kibibyte	KiB	2^10
megabyte	MB	10^6	mebibyte	MiB	2^20
gigabyte	GB	10^9	gibibyte	GiB	2^30
terabyte	TB	10^12	tebibyte	TiB	2^40
petabyte	PB	10^15	pebibyte	PiB	2^50
exabyte	EB	10^18	exbibyte	EiB	2^60
zettabyte	ZB	10^21	zebibyte	ZiB	2^70
yottabyte	YB	10^24	yobibyte	YiB	2^80