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What are the names of the original Windows OS and when were they released?
Wiki User
∙ 11y ago
The original Windows OS was either Windows 1.0, released in 1985 or Windows NT released in 1992.
Windows 1.0 is sometimes not considered an actual operating system because it ran inside of MS-DOS as its own executable file. However, it did provide many operating system like features, such as device drivers, virtual memory, (co-operative) multitasking and demand-loading of executable code/static data.
Windows NT was its own stand alone Operating System and did not depend upon MS-DOS. In fact, MS-DOS ran inside of Windows NT as a virtual machine! Windows NT was the first operating system to provide "preemptive multitasking" - where the operating system is able to take away a program's control of the CPU against its will so that another program can execute.
Windows 95, though still dependent upon MS-DOS as a boot-loader, was closer to a bona fide operating system than Windows 1.0 - but alas, as its name suggests it was released in 1995, thus making it newer than NT.
Wiki User
∙ 11y ago
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