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In this convention, one thousand and twenty-four megabytes (1024 MB) is equal to one gigabyte (1 GB), where 1 GB is 1024 3 bytes (i.e., 1 GiB). Mixed 1 MB = 1 024 000 bytes (= 1000×1024 B) is the definition used to describe the formatted capacity of the 1.44 MB 3.5-inch HD floppy disk, which actually has a capacity of 1 474 560 bytes. [5]
8,388,608 bits (1,024 kibibytes), one of a few traditional meanings of megabyte: 10 7: 11,520,000 bits – capacity of a lower-resolution computer monitor (as of 2006), 800 × 600 pixels, 24 bpp: 11,796,480 bits – capacity of a 3.5 in floppy disk, colloquially known as 1.44 megabyte but actually 1.44 × 1000 × 1024 bytes 2 24: 16,777,216 ...
1024 is the natural number following 1023 and preceding 1025. 1024 is a power of two : 2 10 (2 to the tenth power). [ 1 ] It is the nearest power of two from decimal 1000 and senary 10000 6 (decimal 1296 ).
An order of magnitude is generally a factor of ten. A quantity growing by four orders of magnitude implies it has grown by a factor of 10000 or 10 4.However, because computers are binary, orders of magnitude are sometimes given as powers of two.
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The term 'kilobyte' has traditionally been used to refer to 1024 bytes (2 10 B). [5] [6] [7] The usage of the metric prefix kilo for binary multiples arose as a convenience, because 1024 is approximately 1000. [8] The binary interpretation of metric prefixes is still prominently used by the Microsoft Windows operating system. [9]
Terms for large quantities of bits can be formed using the standard range of SI prefixes for powers of 10, e.g., kilo = 10 3 = 1000 (as in kilobit or kbit), mega = 10 6 = 1 000 000 (as in megabit or Mbit) and giga = 10 9 = 1 000 000 000 (as in gigabit or Gbit).
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.