The First Operating System in the world and it’s company was?

The first operating system has been introduced in the early 1950s, it was called GMOS and was built by General Motors for IBM’s Machine 701. In 1950 the operating system was called a single-stream batch processing system because the data was presented in groups.

Early electronic digital computers had no operating system. At the time machines were so primitive that programs were often entered a bit on rows of mechanical switches (plug boards). Programming languages were unknown (not even assembly languages).
Operating System

The 1960s systems were also batch processing systems, but they were able to better leverage computer resources by running multiple jobs simultaneously.

Operating System Designers

Therefore The first operating system designers developed the concept of multiprogramming in which many jobs are in main memory at once; A processor is changed from job to job because many jobs need to be pushed forward while keeping peripheral devices in use.

After the development of LSI (Large Scale Integration) circuits, chips, operating systems. The system entered the age of personal computers and workstations.


The Microprocessor technology evolved to the point. It became possible to manufacture desktop computers as the mainframe of the 1970s. The First Two operating systems have dominated the personal computer scene. 1.MS-DOS written by Microsoft and Inc. to use IBM PCs and Intel 8088 CPUs and its successors, and 2. Unix, which pioneered large personal computers using Motorola is. 6899 CPU Family.

For the Developing and maintaining two completely different product lines was an expensive proposition for manufacturers. In addition, many new computer customers initially needed a smaller machine, but later extended it and wanted a larger machine that ran all their old programs, but faster.

So, IBM attempted to solve both of these problems in one stroke by introducing System / 360.

The 360 ​​was a series of software-compatible machines ranging in size from 1401s to much more powerful than 7094s. Machines differed only in price and performance (maximum memory, processor speed, number of I / O devices, and beyond). Since all machines had the same architecture and instruction set, programs written for one machine can run on at least all theory.

In addition, the 360 ​​was designed to handle both scientific (ie, numerical) and commercial computing. Thus a single family of machines can meet the needs of all customers. In later years, IBM has come up with compatible successors for the 360 ​​line. Using the more modern technology as the 360, 4300, 3080 and 3090 series.
First Computer

Introduction of the first Computer

The 360 ​​was the first large computer line to use (small-scale) integrated circuits (ICs). Thus providing a major price / performance advantage over second-generation machines, which were built from individual transistors.

It was a success. The idea of ​​a family of compatible computers was soon adopted by all other major manufacturers. The descendants of these machines are still in use in computer centers today.

Nowadays they are often used to manage huge databases (eg, for airline reservation systems) or as servers for World Wide Web sites that must process thousands of requests per second.


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