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  2. File size - Wikipedia

    File size. File size is a measure of how much data a computer file contains or, alternately, how much storage it consumes. Typically, file size is expressed in units of measurement based on the byte. By convention, file size units use either a metric prefix (as in megabyte and gigabyte) or a binary prefix (as in mebibyte and gibibyte ).

  3. Comparison of file systems - Wikipedia

    Limits. While storage devices usually have their size expressed in powers of 10 (for instance a 1 TB Solid State Drive will contain at least 1,000,000,000,000 (10 12, 1000 4) bytes), filesystem limits are invariably powers of 2, so usually expressed with IEC prefixes. For instance, a 1 TiB limit means 2 40, 1024 4 bytes.

  4. Computer data storage - Wikipedia

    Computer data storage is a technology consisting of computer components and recording media that are used to retain digital data. It is a core function and fundamental component of computers. [1] : 15–16. The central processing unit (CPU) of a computer is what manipulates data by performing computations.

  5. Gigabyte - Wikipedia

    1 GiB = 1 073 741 824 bytes (= 1024 3 B = 2 30 B). The binary definition uses powers of the base 2, as does the architectural principle of binary computers . This usage is widely promulgated by some operating systems, such as Microsoft Windows in reference to computer memory (e.g., RAM ). This definition is synonymous with the unambiguous unit ...

  6. Computer file - Wikipedia

    A file may be designed to store an image, a written message, a video, a program, or any wide variety of other kinds of data. Certain files can store multiple data types at once. By using computer programs, a person can open, read, change, save, and close a computer file. Computer files may be reopened, modified, and copied an arbitrary number ...

  7. Data compression ratio - Wikipedia

    Thus, a representation that compresses the storage size of a file from 10MB to 2MB yields a space saving of 1 - 2/10 = 0.8, often notated as a percentage, 80%. For signals of indefinite size, such as streaming audio and video, the compression ratio is defined in terms of uncompressed and compressed data rates instead of data sizes:

  8. File Allocation Table - Wikipedia

    File Allocation Table. File Allocation Table ( FAT) is a file system developed for personal computers and was the default filesystem for MS-DOS and Windows 9x operating systems. [3] Originally developed in 1977 for use on floppy disks, it was adapted for use on hard disks and other devices.