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  • Usage share of operating systems


    Worldwide usage share of operating systems as of July 2018 map The usage share of operating systems is the percentage of computing devices that run each operating system at any particular time. All such figures are necessarily estimates because data about operating system share is difficult to obtain; there are few reliable primary sources—and no agreed methodologies for its collection. In the personal computing platform area of smartphones and watches two systems dominate: Google's Android with over 2.7 billion users and Apple's iOS and macOS combined with over 1.3 billion users. In the area of desktop and laptop computers, Microsoft Windows is generally above 75% in most markets, Apple's MacOS at around 20%, Google's ChromeOS at about 5% and Linux at around 2%. All these figures vary somewhat in different markets, and depending on how they are gathered. For public internet servers Linux is generally counted as dominant, powering about twice the number of hosts as Windows Server—which is trailed by many smaller players including traditional mainframe OSs. The supercomputer field is completely dominated by Linux—with 100% of the TOP500 now running on this OS.

  • Samsung Galaxy Tab series


    The Samsung Galaxy Tab is a line of Android-based tablet computers produced by Samsung Electronics. The first model in the series, the 7-inch Samsung Galaxy Tab, was presented to the public on 2 September 2010 at the IFA in Berlin. Since then several models have been released, including models with 7.7, 8.9 and 10.1-inch displays. The Wi-Fi versions of the tablet all include a GPS system while the 3G/4G tablets include cellular capability as well.

  • Tablet computer


    Apple's iPad (left) and Amazon's Fire (right), two popular tablet computers. A tablet computer, commonly shortened to tablet, is a mobile device, typically with a mobile operating system and LCD touchscreen display processing circuitry, and a rechargeable battery in a single thin, flat package. Tablets, being computers, do what other personal computers do, but lack some I/O capabilities that others have. Modern tablets largely resemble modern smartphones, the only differences being that tablets are relatively larger than smartphones, with screens or larger, measured diagonally, and may not support access to a cellular network. The touchscreen display is operated by gestures executed by finger or stylus instead of the mouse, trackpad, and keyboard of larger computers. Portable computers can be classified according to the presence and appearance of physical keyboards. Two species of tablet, the "slate" and "booklet", do not have physical keyboards and usually accept text and other input by use of a virtual keyboard shown on their touchscreen displays.

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