Timeline of operating systems

 At the beginning, computers did not have Operating Systems, but at the beginning of the 50's the term OS appeared, which worked with EXEC 1, but it was not until EXEC II when it started to be known, created by UNIVAC.

2nd Generation

1960 - 1965

At the beginning of this second generation, UNIVAC builds a new version with the EXEC operating system but improved to the first generation, EXEC II. Years later, EXEC 8 appears.

The BATCH system appears in this generation with the aim of facilitating the use of computers by users and is characterized by batch processing.

The first integrated circuits also appeared.

3rd GENERATION

1965 - 1971

The majority of Operating Systems are single-user.

Multiprocessors appear

OS/360 is developed in 1965 by IBM

MULTICS appeared, which would be the precursor of UNIX, whose development would take place between 1969-1970.

CP/CMS and VM/CMS, new Operating Systems made by IBM.

4th Generation

1971 - 1981

Operating systems are multitasking, multiuser and the interface is text mode.

UNIX is rewritten in C , in addition to being multitasking and multiuser.

CP/M is created.

BSD UNIX is created by the University of California. Operating system that arose when the UNIX license was withdrawn by AT&T.

VMS or OpenVMS is launched and would last well into the next generation.

5th Generation

1981 - 2000

The IBM PC was released with the PC-DOS operating system.

MS-DOS appears, with text-mode interface, developed by Microsoft, later incorporating the Windows operating system.

The Novell Netware network operating system appears.

The GNU project is created by Richard Stallman.

Linux is born, created by student Linus Torvalds.

The Linux kernel joins the GNU project and GNU/Linux is born.

Steve Jobs takes over the Macintosh project.

Mac System Software, the first edition of the Mac OS operating system, owned by Apple, is released.

GNU/Linux

1990 - 1999

1989: Richard Stallman writes the first version of the GNU GPL license.

1991: The Linux kernel is publicly announced on August 25 by the then 21-year-old Finnish student Linus Benedict Torvalds.

1992: The first Linux distributions are created.

1994: In March of this year, Torvalds considers all components of the Linux kernel to be totally outdated and introduces Linux version 1.0.

1997: Several proprietary programs are released for Linux on the market, such as the Adabas D database, the Netscape browser.

1998: Major computer companies such as IBM, Compaq and Oracle announce support for Linux.

1999: Linux kernel 2.2 series is released in January, with improved dered code and SMP support.

2001: In January, the 2.4 series of the Linux kernel is released. The Linux kernel now supports up to 64 Gb RAM, 64-bit systems, and USB devices.

2008: The Free Software Foundation releases Linux-libre.

Windows

1995 - 2020

In 1998 Windows 98 appears as the successor to Windows 5, which was released in November 1997.

Between 1999 and 2000, Windows ME is released, whose name means "Millennium Edition".

From 2001 to 2009, the most used Operating System at that time was Windows XP.

In January 2007 comes out an Operating System quite well known but not for its good performance, as it received countless criticisms from users, Windows Vista.

In 2009 comes out one of the most famous Operating Systems, Windows 7, thanks to its predecessor was not up to par.

In 2012 comes out Windows 8 , this particular also received harsh criticism , as it had removed the Start menu . Microsoft acknowledged the mistake and promised to include it again in the next version.

In July 2015 Windows 10 was released, the latest version of Microsoft's operating system.