Classification of Operating System
One possible classification is based on the number of users and tasks as given bellow:
Single user and single tasking
Allows a single user to operate the machine in an interactive conversational mode but normally allows only one user program to be in the main storage and processed time.
- Example:MS DOS
Single user and multi tasking
Allows a single user to operate the machine in an interactive conversational mode and allows more than one user program to be in the main storage.
- Example:MS windows
Multi user Multi tasking
A multi user system has a powerful processor with central data program storage connected to a number of dumb terminals.
Example:
- For super personal computer multi user environment -SCO UNIX,ZENIX
- For mini and Mainframe Computer environment-UNIX,SSP,OS/400,VSE/SP,VM