OPRATING SYSTEM

What are mainframe operating systems?

*Mainframe = computer that can support thousands of application and i/o devices to simultaneously serve thousands of users.

*Most mainframe computers are sold by IBM, and the operating systems are also provided by IBM.z/OS is IBM foremost mainframe operating system

Functions of operating system

-Booting the computer

-performs basic computer tasks

-handles system resource such as computers memory and sharing of the central processing unit (CPU) time by applications

- Its manage the sharing of internal memory among multiple applications

Operating system example

Windows

Mac

Linux