Case Study no. 1 in Operating Systems

Give an example of OS (specific) for each of the following categories of OS:

1. Batch Systems

An example of a batch system is the z/OS operating system, developed by IBM. It is a 64-bit operating system designed for mainframe computers. It has the most highly refined and evolved set of batch processing. It uses the Job Control Language (JCL) in processing jobs. Batch processing is the most fundamental function of the z/OS operating system.

2. Interactive Systems

An example of interactive operating system is the Microsoft and IBM’s Disk Operating System (DOS). The operating system lets the user type the commands and the computer executes them. The disk operating system also lets the user manage the files and disk drives in his computer. The user can copy, move and delete files, make or delete folders, view directories, and many more. This is how interactivity occurs.

3. Real-time systems

A good example of a real-time operating system is the Transaction Processing Facility, developed by American Airlines and IBM for the Sabre Airline Reservation System. TPF is highly optimized to permit messages from the supported network to either be switched out to another location, routed to an application (specific set of programs) or to permit extremely efficient accesses to database records.

4. Hybrid Systems

An example of hybrid operating system is the Linux/ITRON operating system, which is a combination of Linux and a real-time kernel based on the ITRON Specification.

5. Embedded Systems

An example of an embedded operating system is the Microsoft Windows CE. It can also be classified as a real-time operating system, with deterministic interrupt latency. Windows CE has evolved into a component-based, embedded, real-time operating system that is no longer targeted solely at hand-held computers.