Long before Windows, and even before MS-DOS, Microsoft sold a Unix-based operating system it called Xenix in 1980. It was the first OS made by the company, but it eventually sold it off in 1987. On ...

The computer's master control program. When a computer is turned on, a small "boot program" loads the operating system. Although additional system modules may be loaded as needed, the main part, known ...

A NeXTcube computer running the NeXTSTEP operating system. Simon Claessen / Flickr Today marks the 35th anniversary of the launch of NeXTSTEP, a computer operating system launched by Steve Jobs during ...

Operating systems are the backbone of modern computing and play a crucial role in managing the resources of a computer. The design and implementation of an operating system involve a wide range of ...