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4,704 bits (588 bytes) – uncompressed single-channel frame length in standard MPEG audio (75 frames per second and per channel), with medium quality 8-bit sampling at 44,100 Hz (or 16-bit sampling at 22,050 Hz) kilobyte (kB, KB) 8,000 bits (1,000 bytes) 2 13: kibibyte (KiB) 8,192 bits (1,024 bytes) – RAM capacity of a ZX81 and a ZX80.
In this era, bit groupings in the instruction stream were often referred to as syllables [a] or slab, before the term byte became common. The modern de facto standard of eight bits, as documented in ISO/IEC 2382-1:1993, is a convenient power of two permitting the binary-encoded values 0 through 255 for one byte, as 2 to the power of 8 is 256. [8]
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.
On devices like modems, bytes may be more than 8 bits long because they may be individually padded out with additional start and stop bits; the figures below will reflect this. Where channels use line codes (such as Ethernet , Serial ATA , and PCI Express ), quoted rates are for the decoded signal.
"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 ...
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. By the end of 2007, the IEC Standard had been adopted by the IEEE, EU, and NIST, and in 2009 it was incorporated in the International System of Quantities ...
1000 kB: kilobyte: 1000 2: MB: megabyte: 1000 3: GB: gigabyte: ... IEC Memory; 1024 KiB: kibibyte KB: kilobyte 1024 2: MiB: ... Manual of Style/Dates and numbers ...
The unit prefix for the provided value. One of SI or IEC prefixes. 3: The unit prefix to convert into. 4: Significant digits after decimal dot or, if negative, exponent of ten. d: Decimal mode. If set, prefixes will based on powers of 10 instead of 2. Automatically set if IEC prefix is used. link: Add link to provided unit. fmt: fmt parameter ...