17 January 2013

Computer Operating System

The operating system is the software that serves to activate all devices installed on each computer that can communicate with each other. In general, the Operating System is the software on the first layer is placed on the computer's memory when the computer is turned on. While other software is run after the operating system is running, and the OS will perform core public services for that software. Common core services such as access to the disk, memory management, task scheduling, and user interfaces. So that each software no longer have a common core tasks, because it can be served and performed by the operating system. Sections of code that perform core tasks and general called the "kernel" an Operating System.

Operating Systems serves as a liaison between the hardware layer and the software layer. in addition, the computer operating system also does all the important commands in the computer, and ensure that different applications can run smoothly functions simultaneously without a hitch.

Computer Operating System ensure application software can use the memory, performs input and output to other equipment, and have access to the file system. If several applications are running simultaneously, the computer operating system will set a precise schedule, so as much as possible all the processes running on the computer to get enough time to use the CPU and not to interfere with other devices.



Examples of such computer operating system is Windows, Linux, MacOS, and others.
The operation generally consists of several parts:
1. Boot Mechanism, which puts the kernel into memory kernel, the kernel can be considered as the core of the operating system.

2. Command Interpreter or Shell, duty to read the input in the form of commands and provide some standard functions and basic functions that can be called by applications / programs maupub other software. Examples of Shell are: Command Prompt in Windows XP (DOS in Windows 98), XTerm and Konsole on Linux machine (Unix).

3. Driver to interact with the hardware performance while controlling hardware.

4. Resource Allocator. Operating System responsible for managing and allocating resources of the device.

5. Handler. Handler plays a role in controlling the system to avoid Darik ekeliruan (error) and the use of resources unnecessarily.

Now we will consider the history and development of the Operating System.
According Tanebaum, Operating Systems has developed can be divided into four generations.
- Generation Operations Systems Early Early development is still done manually in a sense yet to emerge any Operating System that automatically means the service does not yet support the work that can be done in one series.

- The Second Generation's generation was the introduction perkejaan to do in the first series or referred to Proccessing Batch System.

- Third Generation In the third generation, operating system already supports the Multi-User, Multi-Programming and Proccessing Batch System (Multi-Task).

- In the fourth generation, have been permitted to GUI (Graphical User Interface), which means that the Operating System has a look and to capitalize mouse, End-User can run pplication / or software program.

- The Next Generation introduced the next generation Operating System is in an operating system, this is an example of an Operating System berbasikan Websites that work in an Operating System.

And the next-generation mobile operating system diperkenalkanlah (Mobile) on mobile devices such as PDAs, Pocket PCs, and so forth. In the next generation Operating System technology introduced also its virtual network, so the network is only installed in 1 1 piece OS on devices assigned to servers. In addition, it also introduced Cross Platform Operating System that is meant to combine two different Operating Systems such as Linux and Windows.

Almost all people have a PC and Mobile PC. Due to the price factor that is always changing and the human need for automated tools such as: PC, then man made the PC as a primary need. Along with the development of PC technology was made in quick order to serve as a mobile automation tool (Can be used anytime, anywhere and by anyone). Examples are moving PC: Laptop, Notebook and Netbook, the three devices also have operating system like a PC. And now it's time we discussed the existing operating system on your PC.

So, the conclusion is a computer operating system is a computer software or software that is tasked to carry out the control and management of hardware and basic system operations, including the execution of software applications such as data processing programs that can be used to facilitate human activity. Operating Systems in English is called the Operating System, or regular short OS.

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