Internationally, the unit octet, symbol o, explicitly denotes a sequence of eight bits, eliminating the ambiguity of the byte. The unit symbol for the byte was designated as the upper-case letter B by the International Electrotechnical Commission (IEC) and Institute of Electrical and Electronics Engineers (IEEE) in contrast to the bit, whose IEEE symbol is a lower-case b. The popularity of major commercial computing architectures has aided in the ubiquitous acceptance of the eight-bit size. Many types of applications use information representable in eight or fewer bits and processor designers optimize for this common usage. The international standard IEC 80000-13 codified this common meaning. The modern de-facto standard of eight bits, as documented in ISO/IEC 2382-1:1993, is a convenient power of two permitting the values 0 through 255 for one byte. ![]() The size of the byte has historically been hardware dependent and no definitive standards existed that mandated the size – byte-sizes from 1 to 48 bits are known to have been used in the past. Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable unit of memory in many computer architectures. The byte is a unit of digital information that most commonly consists of eight bits. Less common is a convention that used the megabyte to mean 1000×1024 (1024000) bytes. Heres a small routine I wrote that relies only on bash, and will format any decimal byte value above 1000 into an estimate in terms of K (1024), M (1024K), G (1024M), T, Peta, Exa. However, most standards bodies have deprecated this usage in favor of a set of binary prefixes, in which this quantity is designated by the unit mebibyte (MiB). A common usage has been to designate one megabyte as 1048576 bytes (2 20 B), a measurement that conveniently expresses the binary multiples inherent in digital computer memory architectures. However, in the computer and information technology fields, several other definitions are used that arose for historical reasons of convenience. ![]() This definition has been incorporated into the International System of Quantities. Therefore, one megabyte is one million bytes of information. ![]() Also, explore many other unit converters or learn more about data storage unit conversions. The unit prefix mega is a multiplier of 1000000 (10 6) in the International System of Units (SI). 1 DVD (2 layer, 2 side) 146028888064 bit b DVD (2 layer, 2 side) to bit, bit to DVD (2 layer, 2 side) Free online data storage converter - converts between 41 units of data storage, including bit b, nibble, byte B, character, etc. The megabyte is a multiple of the unit byte for digital information. Let's see how both units in this conversion are defined, in this case Megabytes and Bytes: Megabyte (MB)
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