Multi User Operating Systems. Essay

1695 words - 7 pages

Principle Features

The Multi User Operating System is an operating system that can support two or more simultaneous users. Most common operating systems found such as Windows are not actually Multi-User but Single-User operating systems. Single user will allow one user to do one task at a time in Single Task mode or in Multi Task mode they will allow a user to have a number of programs or tasks running at the same time such as printing, downloading and word processing. Multi tasking is when the operating system seems to be performing two or more tasks at the same time, however these tasks is not actually running simultaneously as the processor is actually switching between tasks at a very high speed, therefore each user sees their own task as having priority. One disadvantage can be that the more programs that are run by the user, the more memory that is required. Multi Tasking can be split into two categories, co-operative and pre-emptive.
Co-operative is when the process currently controlling the CPU must offer a balanced share of the CPU to all other processes, hence Co-operative, as all processes must co-operate for it to work properly. Subsequently an MUOS will allow two or more users a share of the system resources at the same time. The use of the resources must be spread evenly between the requirements of the users so that a problem with one user does not become a problem between all users. Examples of co-operative multi tasking would be Windows 3x and Macintosh.
Pre-emptive is when the applications are forced to share the CPU whether they want to or not and examples of this are Windows 95, NT and UNIX.
Hardware that is necessary to operate a MUOS includes processors, terminals, I/O devices, storage devices and memory. One of the main features of an MUOS is Background Processing. This process is when a program can be run at a later time (for example, overnight account maintenance in a bank) or mainly when a program does not require any user interaction. Advantages of this are that you could be performing another task at the same time as, for instance, downloading from the Internet or print spooling, it is also possible to arrange for a future timed event to take place, such as overnight scheduling of tasks. Subsequently, Foreground Processing is when the task in hand requires some sort of user interaction whether through the keyboard or another input device.

Types of MUOS

Examples of an MUOS would be UNIX or LINUX. There are three main types of multi user operating systems. Firstly we will look at the Multi-processor system. These types of system are designed to maximise the CPU and other resources by allowing the processors to support each other simultaneously, which results in a faster throughput and can also result in parallel processing. In an MUOS the memory is shared and there is only one clock, even though there is more than one processor.
The next type of system is the Time-sliced system. As all multi user operating systems...

Find Another Essay On Multi User Operating Systems.

A Competitive Operating Systems Comparison Essay

972 words - 4 pages micro-computers, arose in recent years. Having two highly competitive operating systems begs the question: Which one is superior?Windows 8, the newest version of Windows, is a widespread operating system favored by much of the public. An operating system is a computer program that coordinates the activities of computer hardware (this includes memory, storage devices, and printers) and allows the user to give commands to the device. Windows 8

Operating systems Essay

1435 words - 6 pages same time. These would be the most common operating systems, like the ones that come on the desktop for computers such as; Windows made by Microsoft and Macintosh made by Apple. Third is the multi user OS. The multi user allows many different users to use the computer's resources simultaneously. The operating system checks itself to make sure that each user that’s running a program has enough separate resources to operate off of and the

Connor Jantzen

1068 words - 5 pages operating system, multi-user, multi-tasking and single-tasking. There is many more than just those 4. They make them for families, schools, businesses, gamers ex. To give people an idea what some of these do I summed up some of the bigger one to explain what they do. This one is more for families. It’s a Real-time operating system. A very important part of an RTOS is managing the resources of the computer so that a particular operation executes in

Network Attributes, Roles and Protocols

1339 words - 5 pages INSTALLATION AND CONFIGURATION OF SERVERS AND CLIENTS Part A 1) Describe the attributes of a multi-user and a network operating system. Multi-user system         A multi-user Operating System is an operating system that has to provide support for at least two users at a time.         The three main features of a multi-user Operating System are resource sharing, multitasking and background processing. Resource Sharing

A Breif History of Unix

1418 words - 6 pages processing. Output is produced onto disk, tape, tape, terminal, or printer. The operating systems generally provide easy to use well-implemented facilities to support these types of facilities.As applications become more sophisticated they need new features such as network access, multi-tasking, and interprocess communications. In traditional operating systems, these features are often hard to use, not well documented, and only callable from assembly

History of the Operating system

537 words - 2 pages In the 1940's computer all existed without operating systems. Back then programs were entered into the machine one bit at a time with the use of mechanical switches. However, soon enough machine languages (consisting of 1s and 0s) were introduced, this sped up the programming process a bit, but in the 1950s the computers could still only run one job(program) at a time. Thus allowing only one person to use the machine at a time. Each user would

An operating system is a program that acts an intermediary betweena user of a computer and the computer hardware

663 words - 3 pages tools for developing Internet web pages and operating system.UNIX, which is also a real operating system. More than one person can runmultiple applications, making it a multi-user and multitasking operatingsystem. With UNIX, each user logs in using a login name. Optionally,the user must also supply a password. The password ensures that theperson logging on with the user login name is really who she claimsto be. If the computer is attached to a

Agatha Cantrell

1046 words - 5 pages . The three most popular operating systems for cell phones are Android, Apple (iPhone), and Windows. Though they make similar there are many differences between the three. Some of them are: Windows was the first to introduce the Start button with Windows 95. In Windows 8, a user must create a profile that includes access to Microsoft's cloud network, whereas in Android uses Google and Gmail, and iPhones use Apple. Some similarities are that

Operating System

700 words - 3 pages directory.In a multi-access system, it may happen that two users want to modify the same record at the same timeTo avoid this, the operating system would use a system of record locking. When a user opens a record on a file it is flagged as locked and will prevent another user changing it. When the record is saved back to the file, it is unlocked.The operating system on a PC usually locks a file when it is opened - or makes it read-only. This

Intorduction to Computer Systems

3056 words - 12 pages , over taking Mac OS. (From windows.microsoft.com, 2013) 1.2 Unix Introduction Unix is a multi-user multitasking operating system. Unix is an operating system which was developed in the 1960s, and since then it has been under constant development. It is a stable multi-user, multi-tasking system for servers, desktops and laptops.Unix systems also have a graphical user interface (GUI) similar to Microsoft Windows, which provides a friendly

Operating Systems

3149 words - 13 pages when programs will run. · Single or Multi-User · A single-user operating system has only one user at a time. This user is granted exclusive access to all system resources. · A multi-user operating system can have more than one user at the same time. Most multi-user operating systems are also multi-tasking. · Memory Management · This defines how memory is allocated to specific tasks, and how memory is protected from other processes. · Device

Similar Essays

Multi User Operating Systems Essay

1563 words - 6 pages An operating system is a set of software programs, which manage computer hardware in a controlled fashion. The operating system controls the file-system, process management, memory management and peripherals. Multi-user operating systems are used on large mainframe computers. A mainframe computer system has one very powerful processing unit, which may contain many microprocessors. Many users will all share this processing unit. They use

Software And Operating Systems Basic Information

616 words - 2 pages . For example, in your word-processing package, if you click on the printer icon, the operating system gives an instruction to the printer to start printing.They manage the system resources such as memory and allocate CPU time to the task being run.They manage the transfer of data to and from the various peripherals (keyboards, mice, scanners, printers, etc.)They manage system security. Many operating systems allocate certain rights to users. A user

Operating Systems Are The Very Basis Of Computer Software Programs

2266 words - 9 pages . An example would be MS- DOS. DOS however is a single user operating system which can only support input from one user at a time. So if more than one person needs to use a computer's resources or if people want to share files, a different operating system is needed. Hence network and multi user operating systems.Network operating systems such as Windows 2000 Server and Novell Netware allow several people to be connected to each others computer

Mach Operating System. What Is Mach, History Of Mach, Factors Were Considered In Making The Mach Operating System, Exception Handling, Features And Advantages?

527 words - 3 pages research, primarily distributed and parallel computation. The project at CMU ran from 1985 to 1994.Several factors were considered in making the Mach operating system. It was important that the operating system be:*Multi-user and multitasking.*Network-compatible.*An excellent program-development environment.*Well-represented in the university, research, and business communities.*Extensible and robust.*Capable of providing room for growth and