What are the types of operating system?Types, advantage of operating system.

Operating system (OS) of a computer is a collection of
software programs that enable the computer hardware to to operate efficiently and to
interface with other software used in the computer. The Operating System makes the task
of operating the computer very easy for the user by incorporating software that makes it
possible to perform many repetitive tasks of computer without having to make provisions
for these in the application software, or feeding detailed step by step command to
computer every time a a simple operation like opening, copying, printing or reorganising
file is required. Without the help of modern operating system, it will not be possible
to operate computers without fairly complicated training in computer software and
operations.

Classification of Computer operating system can
be done based on comparison of their features it terms of different dimensions.The
operating system in a computer performs functions such as process management, main
memory management, file management, input and output system management, secondary
storage management, networking, protection, and command
interpretation,

Some of these dimension of operating system
classification are described below.

Use of
Graphic User Interface (GUI): Traditionally Operating systems required the
computer user to feed instruction to the computer using the key board. However now it is
common to have OS that have devices to feed instruction to computer by pointing to or
selecting different information or icons displayed on computer monitor or
screen.

Number of users who can use
the computer system simultaneously.

Number of
processors and other devices that can be controlled by the
OS.

Number of tasks that the OS can
perform in parallel.

Multi-threading:
This refers to the ability of operating system to allow a computer to run different part
of a program simultaneously.

Many computer operating
systems will fall into more than one of the below categories.