An operating system controls and manages a computer's hardware and software. It allows users to communicate with the computer without knowing its programming language. There are different types of operating systems including real-time operating systems, which are very fast and used for medical equipment, and single-user/single-tasking operating systems like early versions of MS-DOS that only allowed one task at a time. Common personal computers usually use single-user/multitasking operating systems like Windows that enable running multiple applications simultaneously.

1. Submitted by:
Irum Abdullah
Submitted to:
Miss Ayesha Rafiq

3. What is operating system?
An operating system is a powerful, and usually large, program that
controls and manages the hardware and other software on a computer.
All computers and computer-like devices have operating systems,
including your laptop, tablet, desktop, Smartphone, smart
watch, router...you name it.

4. Importance of operating system
An operating system is the most important software that runs on a
computer. It manages the computer's memory and processes, as well as
all of its software and hardware. It also allows you to communicate with
the computer without knowing how to speak the computer's language.

5. Types of operating system

6. Real time operating system
 Real time operating system is very fast.
 It is relatively small operating system.
 Real time operating system is used to run real time
operating system.
 It is used to support multiple task and single task at a
time.
 It is used to run medical diagnostics equipment.
For example:Machinery,scientific instrument, life
support systems and industrial system.

8. Single user/single tasking operating system
 It allow user to perform just one task at a time.
 To a user "task” is a function like writing a document
and download file from a network server.
 For example: MS-DOS operating system

9. Single user/multitasking operating system
 In single user/Multitasking operating system user can
run more than one application at a time.
 The most commonly used personal computer usually
run such operating system like Microsoft windows.
 The multitasking features is used to increased the
productivity of this operating system.

14. Some other example of operating system