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A binary prefix is a unit prefix that indicates a multiple of a unit of measurement by an integer power of two.The most commonly used binary prefixes are kibi (symbol Ki, meaning 2 10 = 1024), mebi (Mi, 2 20 = 1 048 576), and gibi (Gi, 2 30 = 1 073 741 824).
Prefixes for decimal and binary multiples Decimal; Value SI; 1000 10 3: k: kilo: 1000 2: 10 6: M: ... {Quantities of bytes This page was last edited on 7 June 2024 ...
This timeline of binary prefixes lists events in the history of the evolution, development, and use of units of measure that are germane to the definition of the binary prefixes by the International Electrotechnical Commission (IEC) in 1998, [1] [2] used primarily with units of information such as the bit and the byte.
"Note that the IEC names are defined only up to exbi-, corresponding to the SI prefix exa-. The two SI prefixes zetta- (10 21) and yotta- (10 24) have no corresponding IEC binary prefixes, though the obvious continuation would be zebi- (Zi = 2 70 = 1000 7 × 1.180 591 620 717 411 303 424) and yobi- (Yi = 2 80 = 1000 8 × 1.208 925 819 614 629 ...
For communication throughput, a base unit of bit is common. For example, using the metric kilo prefix, a kilobyte is 1000 bytes and a kilobit is 1000 bits. Use of metric prefixes is common, but often inaccurate since binary storage hardware is organized with capacity that is a power of 2 – not 10 as the metric prefixes are.
Commonly, a decimal SI metric prefix (such as kilo-) is used with bit and byte to express larger sizes (kilobit, kilobyte). But, this is usually inaccurate since these prefixes are decimal, whereas binary hardware size is usually binary. Customarily, each metric prefix, 1000 n, is used to mean a close approximation of a binary multiple, 1024 n ...
The byte is a unit of digital information that most commonly consists of eight bits.Historically, the byte was the number of bits used to encode a single character of text in a computer [1] [2] and for this reason it is the smallest addressable unit of memory in many computer architectures.
The International System of Units defines a series of decimal prefixes for multiples of standardized units which are commonly also used with the bit and the byte. The prefixes kilo (10 3) through yotta (10 24) increment by multiples of one thousand, and the corresponding units are the kilobit (kbit) through the yottabit (Ybit).