What was the first computer operating system of all time?

The first computer operating system (OS) was the OS/360, developed by IBM in the mid-1960s. It was designed to be used with the IBM System/360 mainframe computer, which was a revolutionary machine that introduced the concept of hardware compatibility, allowing customers to upgrade to newer models without having to rewrite their software.

The OS/360 was a batch processing operating system, which means that it processed jobs in a batch rather than in real-time. It was able to run multiple programs concurrently and provided tools for managing resources such as memory and input/output devices.

Prior to the development of the OS/360, computers were typically used to perform a single task at a time, and users had to manually load and run programs using punch cards or other input methods. The development of the OS/360 marked a major milestone in the evolution of computer technology, as it paved the way for the modern operating systems that we use today.

What was the file size of OS/360?

It is difficult to provide an accurate file size for the OS/360 operating system, as it was developed in the mid-1960s and the concept of file size as we know it today did not exist at that time.

In the early days of computing, programs and data were typically stored on magnetic tape or punch cards, and the amount of storage space required for a program or dataset was typically measured in terms of the number of tapes or cards needed.

The OS/360 operating system was a large and complex system that consisted of multiple components and utilities, and it required a significant amount of storage space to be installed. However, the specific amount of storage space required would have varied depending on the specific configuration of the system and the specific tools and utilities that were included.

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