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  2. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    Forms Data Format (FDF) based on PDF, uses the same syntax and has essentially the same file structure, but is much simpler than PDF since the body of an FDF document consists of only one required object. Forms Data Format is defined in the PDF specification (since PDF 1.2). The Forms Data Format can be used when submitting form data to a ...

  3. macOS - Wikipedia

    en.wikipedia.org/wiki/MacOS

    For the family of Mac operating systems, see Mac operating systems. For the Ugandan school nicknamed "Macos", see Makerere College School. macOS, originally Mac OS X, previously shortened as OS X, is an operating system developed and marketed by Apple since 2001.

  4. macOS Big Sur - Wikipedia

    en.wikipedia.org/wiki/MacOS_Big_Sur

    macOS Big Sur is the first release of macOS for Macs powered by Apple-designed ARM64 -based processors, a key part of the transition from Intel x86-64 -based processors. [19] The chip mentioned in demo videos, and used in the Developer Transition Kit, is the A12Z Bionic. On November 10, 2020, Apple announced the first Mac Apple silicon chip ...

  5. Operating system - Wikipedia

    en.wikipedia.org/wiki/Operating_system

    A real-time operating system (RTOS) is an operating system intended for applications with fixed deadlines ( real-time computing ). Such applications include some small embedded systems, automobile engine controllers, industrial robots, spacecraft, industrial control, and some large-scale computing systems.

  6. Architecture of macOS - Wikipedia

    en.wikipedia.org/wiki/Architecture_of_macOS

    The architecture of macOS describes the layers of the operating system that is the culmination of Apple Inc. 's decade-long research and development process to replace the classic Mac OS . After the failures of their previous attempts—Pink, which started as an Apple project but evolved into a joint venture with IBM called Taligent, and ...

  7. Mac operating systems - Wikipedia

    en.wikipedia.org/wiki/Mac_operating_systems

    The current Mac operating system is macOS, originally named "Mac OS X" until 2012 and then "OS X" until 2016. [3] It was developed between 1997 and 2001 after Apple's purchase of NeXT. It brought an entirely new architecture based on NeXTSTEP, a Unix system, that eliminated many of the technical challenges that the classic Mac OS faced, such as ...

  8. Apple File System - Wikipedia

    en.wikipedia.org/wiki/Apple_File_System

    Apple File System (APFS) is a proprietary file system developed and deployed by Apple Inc. for macOS Sierra (10.12.4) and later, iOS 10.3, tvOS 10.2, watchOS 3.2, and all versions of iPadOS. [9] [10] It aims to fix core problems of HFS+ (also called Mac OS Extended), APFS's predecessor on these operating systems.

  9. List of Apple operating systems - Wikipedia

    en.wikipedia.org/wiki/List_of_Apple_operating...

    The following is a list of operating systems released by Apple Inc. As of 2023, there are six supported software platforms: iOS, iPadOS, watchOS, tvOS, macOS and visionOS . Prior to the introduction of the Macintosh in early 1984, Apple had several operating systems for the Apple II series, Apple SOS for the Apple III series, and Lisa OS and ...