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Primarily mainframes that did not have operating systems, as in today's terms. More of a system to run programs present on the machine. E.g command shell of todays computers.
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Was the GM-NAA I/O was an OS for an IBM Mainframe computer.
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Computers improve in computing capacity, however prescense of a modern OS is rare.
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Considered the first recognisable modern operating system, was introduced for the Machester Atlast
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UNIX OS is being developed at the famous bell labs.
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These had simple input/output interfaces, as well as access to RAM. Primarily geared towards hobbyists. Includes many types fo IBM and Motorola machines.
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Steve Jobs, Steve Wozniack, and Ronald Wayne start Apple Inc. to sell the Apple I computer.
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Includes several companies like Sony, Nintendo, etc..
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The first computer with a graphical user interface to access the operating system functions.
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Started by Richard Stallman with the process of creating a free, mass collaboation operating system.
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Allowed OS required algorithms like paging and and multitasking for first time on microcomputers.
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Further developement of the GUI in the modern day operating system.
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Started with PDA/PALM OS.
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