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Definition of prefixes using powers of 10—in which 1 kilobyte (symbol kB) is defined to equal 1,000 bytes—is recommended by the International Electrotechnical Commission (IEC). [28] The IEC standard defines eight such multiples, up to 1 yottabyte (YB), equal to 1000 8 bytes. [29]
bit: 10 0: bit 1 bit – 0 or 1, false or true, Low or High (a.k.a. unibit) 1.442695 bits (log 2 e) – approximate size of a nat (a unit of information based on natural logarithms) 1.5849625 bits (log 2 3) – approximate size of a trit (a base-3 digit) 2 1: 2 bits – a crumb (a.k.a. dibit) enough to uniquely identify one base pair of DNA
When b is 2, the unit is the shannon, equal to the information content of one "bit". A system with 8 possible states, for example, can store up to log 2 8 = 3 bits of information. Other units that have been named include: Base b = 3 the unit is called "trit", and is equal to log 2 3 (≈ 1.585) bits. [3] Base b = 10
yottabyte 1000 9: RB: ronnabyte 1000 10: QB: quettabyte ... Therefore, 1 kB = 8000 bit. One thousand kilobytes (1000 kB) is equal to one ... The bit is the ...
NOTE 1 Contrast with the SI prefix mega (M) equal to 10 6, as in a 1-Mb/s data transfer rate, which is equal to 1 000 000 bits per second. NOTE 2 The definitions of kilo, giga, and mega based on powers of two are included only to reflect common usage. IEEE/ASTM SI 10-1997 states “This practice frequently leads to confusion and is deprecated.”
2×10 6 bit/s Video data 30 channels of telephone audio or a Video Tele-Conference at VHS quality 8×10 6 bit/s Video data DVD quality 10 7: 1×10 7 bit/s Networking Classic Ethernet: 1×10 7 bit/s Biology Research suggests that the human retina transmits data to the brain at the rate of ca. 10 7 bit/sec [5] [6] 2.7×10 7 bit/s Video data HDTV ...
As 1024 (2 10) is approximately 1000 (10 3), roughly corresponding to SI multiples, it was used for binary multiples as well. In 1998 the International Electrotechnical Commission (IEC) published standards for binary prefixes , requiring that the gigabyte strictly denote 1000 3 bytes and gibibyte denote 1024 3 bytes.
The tenth power of 2 (2 10) has the value 1024, which is close to 1000. This has prompted the use of the metric prefixes kilo, mega, and giga to also denote the powers of 1024 which is common in information technology with the unit of digital information, the byte. Units of information are not covered in the International System of Units.