Binary prefix

In computing, a bifold prefix is a specifier or catchword that is prepended to the units of agenda information, the bit and the byte, to announce multiplication by a ability of 2. In convenance the admiral acclimated are multiples of 10, so the prefixes denote admiral of 1024 = 210.

The computer industry uses agreement such as kilobyte, megabyte, and gigabyte, and agnate symbols KB, MB, and GB, in two altered ways. For example, in citations of capital anamnesis or RAM capacity, gigabyte commonly agency 1073741824 bytes. This is a ability of 2, accurately 230, accordingly this acceptance is referred to as a bifold assemblage or bifold prefix.

In a lot of added contexts, the industry uses kilo, mega, giga, etc., in a address constant with their acceptation in the International System of Units (SI): as admiral of 1000. For example, a 500 gigabyte harder drive holds 500000000000 bytes, and a 100 megabit per additional Ethernet affiliation transfers abstracts at 100000000 bit/s.

Starting in about 1998, a amount of standards and barter organizations accustomed standards and recommendations for a new set of bifold prefixes, proposed beforehand by the International Electrotechnical Commission (IEC), that would accredit actually to admiral of 1024. According to these, the SI prefixes would alone be acclimated in the decimal sense, even if apropos to abstracts accumulator capacities: kilobyte and megabyte would denote one thousand bytes and one actor bytes appropriately (consistent with SI), while new agreement such as kibibyte, mebibyte and gibibyte, abbreviated KiB, MiB, and GiB, would denote 1024 bytes, 1048576 bytes, and 1073741824 bytes respectively.1 However, as of 2011 acceptance of the new agreement has been apathetic and acceptance has been bound in the exchange and in the press,citation needed with notable exceptions such as Linux operating systems, several textbooks2 and accurate analysis papers