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Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.
A mobile operating system (or mobile OS) is an operating system for phones, tablets, smartwatches, or other mobile devices. Globally, Android and IOS are the two most used mobile operating systems based on usage share , with the former having been the best selling OS globally on all devices since 2013.
The operating system provides an interface between an application program and the computer hardware, so that an application program can interact with the hardware only by obeying rules and procedures programmed into the operating system. The operating system is also a set of services which simplify development and execution of application programs.
A mobile operating system is an operating system used for smartphones, tablets, smartwatches, smartglasses, or other non-laptop personal mobile computing devices.While computers such as typical/mobile laptops are "mobile", the operating systems used on them are usually not considered mobile, as they were originally designed for desktop computers that historically did not have or need specific ...
The article "Usage share of operating systems" provides a broader, and more general, comparison of operating systems that includes servers, mainframes and supercomputers. Because of the large number and variety of available Linux distributions , they are all grouped under a single entry; see comparison of Linux distributions for a detailed ...
OpenDocument — .odt (XML-based standard for office documents) OpenOffice.org XML — .sxw (open, XML-based format for office documents) OXPS — Open XML Paper Specification (Windows 8.1 and above, older version is XPS used in Windows 7) PalmDoc — handheld document format.pages for Pages; PDF — Open standard for
Base system is open source, but many devices use proprietary drivers for hardware support, and most Android operating systems include Proprietary apps (such as Google Play and other Google apps). [3] [4] Proprietary, open source kernel and core: Proprietary except for open-source components
Word processing added to the text editor the ability to control type style and size, to manage lines (word wrap), to format documents into pages, and to number pages. Functions now taken for granted were added incrementally, sometimes by purchase of independent providers of add-on programs.