Key facts

  • 1956: IBM introduced the IBM 305 RAMAC, significant as the first commercial computer to use a magnetic disk drive for online file storage.
  • 1980: Microsoft announced Xenix, showing early Unix-like file-management ideas in 16-bit microprocessor environments.
  • 1983: Microsoft MS-DOS 2.0 added subdirectories, making folder-based file organisation a standard user skill on personal computers.
  • 1989: Phil Katz created the ZIP file format with PKWARE, making compressed archive files common for storage and transfer.
  • 1991: The Unicode Consortium published Unicode 1.0, giving computers a standard way to represent characters from many writing systems.

Key Points at a Glance

  1. 1

    1956: IBM introduced the IBM 305 RAMAC, significant as the first commercial computer to use a magnetic disk drive for online file storage.

  2. 2

    1980: Microsoft announced Xenix, showing early Unix-like file-management ideas in 16-bit microprocessor environments.

  3. 3

    1983: Microsoft MS-DOS 2.0 added subdirectories, making folder-based file organisation a standard user skill on personal computers.

  4. 4

    1989: Phil Katz created the ZIP file format with PKWARE, making compressed archive files common for storage and transfer.

  5. 5

    1991: The Unicode Consortium published Unicode 1.0, giving computers a standard way to represent characters from many writing systems.

  6. 6

    1993: Microsoft introduced NTFS with Windows NT 3.1, giving Windows systems a journaling file system with permissions and large-file support.

  7. 7

    1996: FAT32 support became available with Windows 95 OSR2, extending FAT storage to larger disks and becoming common on removable media.

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Files, folders and file systems

A file is a named collection of data stored on a secondary storage device such as an SSD, hard disk, pen drive, memory card or optical disc. It may contain text, images, audio, video, program code, spreadsheets, database records or configuration details. A folder, also called a directory, is a container used to group files and subfolders. The operating system gives users a file manager, such as File Explorer in Windows, to create, locate, open, copy, move, rename and delete these items.

The deeper concept is the file system. A file system is the method by which an operating system records file names, storage locations, size, timestamps, permissions and free space. Common examples include FAT32 and exFAT on removable media, NTFS on modern Windows drives, APFS on newer Apple devices and ext4 on many Linux systems. For an objective paper, remember the function rather than only the name: the file system converts raw storage blocks into usable files and directories.

Takeaway for MCQs: a file stores data, a folder organises files, and the file system manages how storage is named, located and protected.

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