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A mechanical calculator, or calculating machine, is a mechanical device used to perform the basic operations of arithmetic automatically, or a simulation like an analog computer or a slide rule. Most mechanical calculators were comparable in size to small desktop computers and have been rendered obsolete by the advent of the electronic calculator and the digital computer.
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Developed from earlier uses in textile looms such as the Jacquard loom (1800s), the punched card was first widely implemented in data processing by Herman Hollerith for the 1890 United States Census. His innovations led to the formation of companies that eventually became IBM.
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Alan Turing was an English mathematician, computer scientist, logician, cryptanalyst, philosopher as well as a theoretical biologist. He was highly influential in the development of theoretical computer science, providing a formalization of concepts of algorithm and computation with the Turing machine, which can be considered a model of the now general-purpose computer.
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The Hewlett-Packard Company, commonly shortened to Hewlett-Packard or HP, was an American multinational information technology company. It was founded by Bill Hewlett and David Packard in 1939 in a one-car garage in Palo Alto, California, where the company would remain headquartered for the remainder of its lifetime.
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Hopper was the first to devise the theory of machine-independent programming languages and used this theory to develop the FLOW-MATIC programming language and COBOL, an early high-level programming language still in use today.
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The history of the graphical user interface, understood as the use of graphic icons and a pointing device to control a computer, covers a five-decade span of incremental refinements, built on some constant core principles.
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Apple was created by Steve Jobs and Steve Wozniak, the people who began Apple Computer in 1976, are among the most well-known revolutionaries of the computing age. Their invention of the first true personal computer (laptop/desktop) changed people’s idea of the possibilities of computers like and what it could do to make their lives easier and their work more efficient.
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The first version of Windows, Windows 1.0, was released on November 20, 1985, as a graphical operating system shell for MS-DOS in response to the growing interest in graphical user interfaces (GUIs). The name "Windows" is a reference to the windowing system in GUIs.
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TimBL (born July 8 1955) , is an English computer scientist best known as the inventor of the World Wide Web, HTML, the URL system, and HTTP. He is a professorial research fellow at the University of Oxford and a professor emeritus at the Massachusetts Institute of Technology (MIT).
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is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves.
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In the early 2000s, the success of Apple's iPod, which dominated the digital music player market, prompted speculation among analysts about Apple's potential expansion into other portable devices, including a mobile phone.
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Chromebook (stylized in all-lowercase) is a line of laptops, desktops, tablets and all-in-one computers that run ChromeOS, a proprietary operating system developed by Google
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The Apple Watch is a brand of smartwatch products developed and marketed by Apple. It incorporates fitness tracking, health-oriented capabilities, and wireless telecommunication, and integrates with watch-OS and other Apple products and services.