Unix
DOS
MS-DOS was the first widely used operating system
disk operating system
The MVS operating system was the most commonly used operating system used on mainframe computers. The MVS operating system was developed by IBM and was first released in 1974.
Unix came first; Linux is a clone of the Unix Operating System.
os/2
DOS meaning Disc Operating System
Windows NT 3.1
Based on the Unix Operating System.
DOS
yes in blind schools
the operating system which is basically used for gaming and designing of the gaming is called an rock operating system
The QNX operating system is mostly used for industrial purpose. It is a real time Operating system as opposed to Linux that is considered a basic operating system.