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  2. Orders of magnitude (data) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(data)

    0.6–1.3 bits – approximate information per letter of English text. [3] 2 0: bit: 10 0: bit 1 bit – 0 or 1, false or true, Low or High (a.k.a. unibit) 1.442695 bits (log 2 e) – approximate size of a nat (a unit of information based on natural logarithms) 1.5849625 bits (log 2 3) – approximate size of a trit (a base-3 digit) 2 1

  3. Data-rate units - Wikipedia

    en.wikipedia.org/wiki/Data-rate_units

    The ISQ symbols for the bit and byte are bit and B, respectively.In the context of data-rate units, one byte consists of 8 bits, and is synonymous with the unit octet.The abbreviation bps is often used to mean bit/s, so that when a 1 Mbps connection is advertised, it usually means that the maximum achievable bandwidth is 1 Mbit/s (one million bits per second), which is 0.125 MB/s (megabyte per ...

  4. Gigabyte - Wikipedia

    en.wikipedia.org/wiki/Gigabyte

    The gigabyte (/ ˈ ɡ ɪ ɡ ə b aɪ t, ˈ dʒ ɪ ɡ ə b aɪ t /) [1] is a multiple of the unit byte for digital information. The prefix giga means 10 9 in the International System of Units (SI). Therefore, one gigabyte is one billion bytes. The unit symbol for the gigabyte is GB.

  5. File size - Wikipedia

    en.wikipedia.org/wiki/File_size

    Due to typical file system design, the amount of space allocated for a file is usually larger than the size of the file's data – resulting in a relatively small amount of storage space for each file, called slack space or internal fragmentation, that is not available for other files but is not used for data in the file to which it belongs.

  6. Units of information - Wikipedia

    en.wikipedia.org/wiki/Units_of_information

    1 byte: A number from 0 to 255; 90 bytes: Enough to store a typical line of text from a book; 512 bytes = 0.5 KiB: The typical sector size of an old style hard disk drive (modern Advanced Format sectors are 4096 bytes). 1024 bytes = 1 KiB: A block size in some older UNIX filesystems; 2048 bytes = 2 KiB: A CD-ROM sector

  7. Byte - Wikipedia

    en.wikipedia.org/wiki/Byte

    An alternative system of nomenclature for the same units (referred to here as the customary convention), in which 1 kilobyte (KB) is equal to 1,024 bytes, [38] [39] [40] 1 megabyte (MB) is equal to 1024 2 bytes and 1 gigabyte (GB) is equal to 1024 3 bytes is mentioned by a 1990s JEDEC standard. Only the first three multiples (up to GB) are ...

  8. List of interface bit rates - Wikipedia

    en.wikipedia.org/wiki/List_of_interface_bit_rates

    1 GB/s: 2004 Enterprise Southbridge Interface (ESI) 8 Gbit/s: 1 GB/s: PCI Express 1.0 (×4 link) [l] 10 Gbit/s: 1 GB/s: 2004 AGP 4×: 8.533 Gbit/s: 1.067 GB/s: 1998 PCI-X 133: 8.533 Gbit/s: 1.067 GB/s: PCI-X QDR 16-bit: 8.533 Gbit/s: 1.067 GB/s: InfiniBand single 4× [23] 8 Gbit/s: 1 GB/s: RapidIO Gen1 4×: 10 Gbit/s: 1.25 GB/s: RapidIO Gen2 2 ...

  9. Giga- - Wikipedia

    en.wikipedia.org/wiki/Giga-

    The notation 1 GB represents 1,000,000,000 bytes or, in deprecated usage, 1,073,741,824 (2 30) bytes. Per IEC 60027-2 A.2 and ISO/IEC 80000 standards, the correct notation of 2 30 is gibi (symbol Gi). [14] One gibibyte (1 GiB) is 1,073,741,824 bytes or 1.074 GB. Despite international standards, the use of 1 GB = 2 30 B is widespread.