History of Operating System (OS)

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Probably many of us don’t have idea about what is operating system, history of operating system (OS) and how operating system works. Computer system, mobile device and other electronica devices has operating system which plays important role to perform different operations.

An operating system is the most important programs or operations or tasks that runs on a computer.

It perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of all files and directories on the disk, memory management and controlling peripheral devices such as disk drives and printers.

Operating systems can be found on a countless number of items including:

  1. Mobile phone
  2. ATM machines and
  3. Even many modern day automobiles
When and why we started to use operating system. The detailed history of Operating system is as:

The First Generation (1940 to early 1950):

When electronic computers where first introduced in the 1940’s they were created without any operating systems.

All programming was done in absolute machine language, often by wiring up plug boards to control the machine’s basic functions.

During this generation computers were generally used to solve simple math calculations, operating systems were not necessarily needed.

The Second Generation (1955 to 1965):

The first operating system was introduced in the early 1950’s, it was called GMOS and was created by General Motors for IBM’s machine the 701.

Operating systems in the 1950’s were called single-stream batch processing systems because the data was submitted in groups.

These new machines were called mainframes, and they were used by professional operators in large computer rooms.

The Third Generation (1965 to 1980):

By the late 1960’s operating systems designers were able to develop the system of multiprogramming in which a computer program will be able to perform multiple jobs at the same time.

Multiprogramming system allowed a CPU to be busy nearly 100 percent of the time that it was in operation.

Helps to phenomenal growth of minicomputers development and started towards personal computer.

The Fourth Generation (1980 to Present Day):

The fourth generation of operating systems saw the creation of personal computing.

One of the major factors in the creation of personal computing was the birth of Microsoft and the Windows operating system.

The windows Operating System was created in 1975 with a vision to take personal computing to the next level.

MS-DOS in 1981. Some other operating system also developed after some modification in functions like

Windows 95

Windows 98

Windows XP etc.

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