FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The first version of Windows, released in 1985, was simply a GUI offered as an extension of Microsoft’s existing disk operating system, or MS-DOS.

Detailed explanation-2: -In 1985, Microsoft released a new operating system, Windows, with a graphical user interface that included drop-down menus, scroll bars and other features.

Detailed explanation-3: -Microsoft Operating Systems As a newly formed company, Microsoft’s first operating system product to be publicly released was a version of Unix called Xenix, released in 1980. Xenix was later used as the basis for Microsoft’s first word processor Multi-Tool Word, a predecessor to Microsoft Word.

Detailed explanation-4: -In 1980 International Business Machines Corporation (IBM) asked Microsoft to produce the essential software, or operating system, for its first personal computer, the IBM PC.