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  2. Megabyte - Wikipedia

    en.wikipedia.org/wiki/Megabyte

    MB in this context means 1,000×1,024 bytes. Depending on compression methods and file format, a megabyte of data can roughly be: a 1 megapixel bitmap image (e.g. ~1152 × 864) with 256 colors (8 bits/pixel color depth) stored without any compression. 6 seconds of 44.1 kHz/16 bit uncompressed CD audio.

  3. Orders of magnitude (data) - Wikipedia

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

    4 bits – (a.k.a. tetrad(e), nibble, quadbit, semioctet, or halfbyte) the size of a hexadecimal digit; decimal digits in binary-coded decimal form 5 bits – the size of code points in the Baudot code, used in telex communication (a.k.a. pentad) 6 bits – the size of code points in Univac Fieldata, in IBM "BCD" format, and in Braille. Enough ...

  4. Orders of magnitude (bit rate) - Wikipedia

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

    A group of 8 bits (8 bit) constitutes one byte (1 B). The byte is the most common unit of measurement of information ( megabyte , mebibyte , gigabyte , gibibyte , etc.). The decimal SI prefixes kilo , mega etc., are powers of 10.

  5. 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 ...

  6. Units of information - Wikipedia

    en.wikipedia.org/wiki/Units_of_information

    Computers usually manipulate bits in groups of a fixed size, conventionally called words. The number of bits in a word is usually defined by the size of the registers in the computer's CPU, or by the number of data bits that are fetched from its main memory in a single operation.

  7. Bit - Wikipedia

    en.wikipedia.org/wiki/Bit

    The bit is the most basic unit of information in computing and digital communication. ... byte, kilobit, kilobyte, megabit, megabyte, gigabit, gigabyte;

  8. Binary prefix - Wikipedia

    en.wikipedia.org/wiki/Binary_prefix

    A PCI-X bus with 66 MHz clock and 64 bits wide can transfer 66 000 000 64-bit words per second, or 4 224 000 000 bit/s = 528 000 000 B/s, which is usually quoted as 528 MB/s. A PC3200 memory on a double data rate bus, transferring 8 bytes per cycle with a clock speed of 200 MHz has a bandwidth of 200 000 000 × 8 × 2 = 3 200 000 000 B/s ...

  9. 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.