Types of Operating and User interface

Types of OS:

1) Single user single tasking OS: 

The OS which allows only one user to work on a computer and can execute only a single task at a time is known as single user single tasking operating system.

Ex: MS DOS.

2) Single user multitasking OS: 

An operating system which allows only one user to work on a computer and can execute more than one task at a time is known as single user multitasking os.

Ex: Windows 95, windows98.

3) Multi user multitasking OS: 

This OS allows a number of users to work on a computer and can support the execution of more than one task at a time is known as multi user multitask OS.

Ex: Windows NT, Linux, Unix.

4) Batch OS: 

Sequence of jobs in a program on a computer without manual interventions.

Ex: Payroll.

5)Real time OS: 

Meant applications to fix the deadlines.

Ex: Robotics & Rocket launching.

Some Examples of Operating system:

1) windows OS:

• Windows1.0
• Windows2.0
• Windows3.0 
• Windows XP 
• windows NT
• Windows VISTA
• Windows 7
• Windows 8
• Windows2000
• Windows10(Sep 2015)
• Windows 11(5 OCT 2021).

2) Unix OS: 

• Oracle Solaris
• Net BSD
• Free BSD
• Darwin
• HP
• BM-AIX.

3) Linux OS: 

• Ubuntu
• Manjaro
• Linux mint
• Garuda
• Endeavour
• Debian
• Fedora
• Red hat
• Mandriva
• Arch Linux.

4) Mobile phone OS: 

Android (google)

iOS(apple)

Windows phone os(lumia)

Symbian( Nokia)

Tizen( SamSung).

User interface: 

It talks about an interface that allows communication between user and computer.

There are two types of user interface:

1)CUI ( Character /command user interface): 

A user interacting with a computer using character or command is called character or command user interface.

2) GUI (Graphical user interface): 

User interact with computer using icon or graphics called graphical user interface.