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First of all let me tell you one thing that before Microsoft there was very little scope for personal computers and softwares related to those computers. Still there were some softwares and software building programming languages. FORTRAN or formula translation, the first high level programming language, was invented by John Backus for IBM, in 1954, and released commercially, in 1957. It is still used today for programming scientific and mathematical applications. Fortran began as a digital code interpreter for the IBM 701 and was originally named Speedcoding. John Backus wanted a programming language closer to human language, which is the definition of a high level language.

At that time the softwares available were Aldus Pagemaker, Trillian, Wordstar, Computer Chess, VisiCalc Spreadsheet. WordStar - The First Word Processor Released in 1979 by Micropro International, WordStar was the first commercially successful word processing software program produced for microcomputers and the best selling software program of the early eighties. first desktop publishing program was created by Paul Brainard and a company called Aldus, the program called "Aldus Pagemaker 1.0" was released in July, 1985 for the "Macintosh" and in December, 1986, for the "IBM". If you go with the history of operating system than previously there was nothing except UNIX.

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12y ago
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11y ago

Before Windows Vista was created, Windows XP was the previous operating system launched in 2001 which continued from Windows Milennium (2000) operating system. Because Windows XP was a basic GUI (Guided User Interface), the system would load very quicker when turning on compared to Vista. Vista has much more security features compared to XP, however Vista has been criticised as a result of being too focused on security, where tests have shown that Vista is very unsafe in general to work on, compared to other operating systems such as XP and Windows 7.

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14y ago

There were many kinds of OSs back then, most command driven. Here are some I can think of:

1. Apple

2. UNIX

3. PC-DOS

4. Commodore 64

5. Amiga

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12y ago

The operating system before windows 1 was doornob

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12y ago

no such thing as windows 1

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10y ago

Microsoft Disk Operating System - MSDOS

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12y ago

Windows XP

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Q: What operating system was used before Microsoft was invented?
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What computer system was used before Microsoft was invented?

Assuming that we are only talking about the personal computer (PC) market, before Microsoft's Windows operating systems, Microsoft's Disk operating system, or DOS, was used. Before that, CP/M was a popular computer operating system.


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