Author Topic: OPERATING SYSTEM  (Read 794 times)

hameedkm

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OPERATING SYSTEM
« on: December 24, 2014, 12:34:50 PM »
Hi,

   What are the OPERATING SYSTEM TYPES?

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Hameed

afsalabdulla

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Re: OPERATING SYSTEM
« Reply #1 on: December 24, 2014, 12:35:21 PM »
Hi,

As computers have progressed and developed so have the types of operating systems. Below is a basic list of the different types of operating systems and a few examples of Operating Systems that fall into each of the categories. Many computer Operating Systems will fall into more than one of the below categories.

GUI - Short for Graphical User Interface, a GUI Operating System contains graphics and icons and is commonly navigated by using a computer mouse. See our GUI dictionary definition for a complete definition. Below are some examples of GUI Operating Systems.

System 7.x
Windows 98
Windows CE

Multi-user - A multi-user Operating System allows for multiple users to use the same computer at the same time and/or different times. See our multi-user dictionary definition for a complete definition for a complete definition. Below are some examples of multi-user Operating Systems.

Linux
Unix
Windows 2000
Windows XP
Mac OS X

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afsal

hameedkm

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Re: OPERATING SYSTEM
« Reply #2 on: December 25, 2014, 12:40:40 PM »
Hi,

   What are the basic functions of an operating system?

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Hameed

afsalabdulla

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Re: OPERATING SYSTEM
« Reply #3 on: December 26, 2014, 05:14:09 AM »
Hi,

Operating system controls and coordinates the use of the hardware among the various applications programs for various uses. Operating system acts as resource allocator and manager. Since there are many possibly conflicting requests for resources the operating system must decide which requests are allocated resources to operating the computer system efficiently and fairly. Also operating system is control program which controls the user programs to prevent errors and improper use of the computer. It is especially concerned with the operation and control of I/O devices.

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afsal

siljy.datasoft

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Re: OPERATING SYSTEM
« Reply #4 on: September 10, 2015, 10:40:03 PM »
hii


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Home > Information Technology > Mandatory Units > Install and optimise operating system software > Install and optimise operating system software

Basic functions of an operating system

Definition

An operating system is a group of computer programs that coordinates all the activities among computer hardware devices. It is the first program loaded into the computer by a boot program and remains in memory at all times.

Functions of an operating system

The basic functions of an operating system are:

Booting the computer
Performs basic computer tasks eg managing the various peripheral devices eg mouse, keyboard
Provides a user interface, e.g. command line, graphical user interface (GUI)
Handles system resources such as computer's memory and sharing of the central processing unit (CPU) time by various applications or peripheral devices
Provides file management which refers to the way that the operating system manipulates, stores, retrieves and saves data.
Booting the computer

The process of starting or restarting the computer is known as booting. A cold boot is when you turn on a computer that has been turned off completely. A warm boot is the process of using the operating system to restart the computer.

Performs basic computer tasks

The operating system performs basic computer tasks, such as managing the various peripheral devices such as the mouse, keyboard and printers. For example, most operating systems now are plug and play which means a device such as a printer will automatically be detected and configured without any user intervention.

Provides a user interface

A user interacts with software through the user interface. The two main types of user interfaces are: command line and a graphical user interface (GUI). With a command line interface, the user interacts with the operating system by typing commands to perform specific tasks. An example of a command line interface is DOS (disk operating system). With a graphical user interface, the user interacts with the operating system by using a mouse to access windows, icons, and menus. An example of a graphical user interface is Windows Vista or Windows 7.
The operating system is responsible for providing a consistent application program interface (API) which is important as it allows a software developer to write an application on one computer and know that it will run on another computer of the same type even if the amount of memory or amount of storage is different on the two machines.

Handles system resources

The operating system also handles system resources such as the computer's memory and sharing of the central processing unit (CPU) time by various applications or peripheral devices. Programs and input methods are constantly competing for the attention of the CPU and demand memory, storage and input/output bandwidth. The operating system ensures that each application gets the necessary resources it needs in order to maximise the functionality of the overall system.

Provides file management

The operating system also handles the organisation and tracking of files and directories (folders) saved or retrieved from a computer disk. The file management system allows the user to perform such tasks as creating files and directories, renaming files, coping and moving files, and deleting files. The operating system keeps track of where files are located on the hard drive through the type of file system. The type two main types of file system are File Allocation table (FAT) or New Technology File system (NTFS).

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PeterParker

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Re: OPERATING SYSTEM
« Reply #5 on: December 03, 2015, 03:32:04 AM »
Hi,

   What are the OPERATING SYSTEM TYPES?

Thanks
Hameed

Hi! Wiki says:

Examples of popular modern operating systems include BlackBerry, BSD, iOS, Linux (Android, Chrome OS, Debian, Fedora, Gentoo, PCLinuxOS, RHEL ), OS X, QNX, Steam OS, Microsoft Windows (and variant Windows Phone) and z/OS. The first seven of these examples share roots in Unix. Popular hard real-time operating systems include FreeRTOS, Micrium and VxWorks.

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