Types of Operating Systems:

introduction:

Important thing in operating system you have to understand types of operating system because in the future you are work with different operating system, so read all information and focus for small details

Within the broad family of operating systems, there are generally four types, categorized based on the types of computers they control and the sort of applications they support. The categories are:

•         Real-time operating system (RTOS) - Real-time operating systems are used to control machinery, scientific instruments and industrial systems. An RTOS typically has very little user-interface capability, and no end-user utilities, since the system will be a "sealed box" when delivered for use. A very important part of an RTOS is managing the resources of the computer so that a particular operation executes in precisely the same amount of time, every time it occurs. In a complex machine, having a part move more quickly just because system resources are available may be just as catastrophic as having it not move at all because the system is busy.

•  Single-user, single task - As the name implies, this operating system is designed to manage the computer so that one user can effectively do one thing at a time. The Palm OS for Palm handheld computers is a good example of a modern single-user, single-task operating system.

• Single-user, multi-tasking - This is the type of operating system most people use on their desktop and laptop computers today. Microsoft's Windows and Apple's MacOS platforms are both examples of operating systems that will let a single user have several programs in operation at the same time. For example, it's entirely possible for a Windows user to be writing a note in a word processor while downloading a file from the Internet while printing the text of an e-mail message.

•  Multi-user - A multi-user operating system allows many different users to take advantage of the computer's resources simultaneously. The operating system must make sure that the requirements of the various users are balanced, and that each of the programs they are using has sufficient and separate resources so that a problem with one user doesn't affect the entire community of users. Unix, VMS and mainframe operating systems, such as MVS, are examples of multi-user operating systems

This video introduces you to the basics of computers. It will teach you about different operating systems used everyday at work and at home

DOS	Single-tasking operating system
Windows	Multi-tasking, single-user. Capable of networking and resource sharing. Used NETBEUI protocol prior to Windows 2000; largely uses TCP/IP today
MacOS	Multi-tasking, single-user, excels at network-based resource sharing. Used AppleTalk protocol prior to TCP/IP support; Linux-based since OS X.
Novell NetWare	Network operating system used for resource sharing; supports Windows and Mac clients. Dominate NOS in the 1990s using IPX protocol; Linux-based since NetWare v5 using TCP/IP.
Unix	Multi-tasking, single- or multi-user OS. Predominant server OS on Internet servers; has always used TCP/IP.
Linux	Open-source, lightweight version of UNIX; many variants. Excellent OS for resource sharing, uses TCP/IP

Question and answer

The capability of the operating system to enable two or more than two programs to execute simultaneously in a single computer system by using a single processor is ?

(A) Multiprocessing

(B) Multitasking

(C) Multiprogramming

(D) Multiexecution

(E) None of these

Correct Answer :   B

Now in your comments box down the code you must write five sentences about what did yuo learned With writing yourname and academic number