The operating system is the brain of a computer

The operating system is a very complex term.It does not have an exact definition, since it is a whole complex of programs, each of which performs a certain function, and as a whole are a single complex for computer management. The development of the "axis" takes a lot of time. Modern operating systems are being finalized after the release for several years.

The operating system is a collection of differentprograms and applications that allow simultaneous interaction of all devices of a personal computer. Various applications from the whole complex provide access to PC resources.

The operating system are applications thatcontrol the main processes, various external modules (such as a printer, webcam, etc.) files, programs. OS can differ by the principle of operation, degree of reliability and security, but their main function remains unchanged.

Operating system is the main way of communicationbetween the PC and the user. OS is inherently the soul of a computer, without it it will become just a collection of various devices, the use of which will be simply impossible.

IBM-compatible personal computersuse a variety of operating systems and environments. The choice of OS is carried out due to the functions that the personal computer will have to perform. For example, a powerful gaming station should be provided by Windows, and the PDA uses the Android operating system.

One of the most common systems for PCs:

- MS-DOS - OS, the management in which occursusing the command line. It differs in simplicity and reliability, but it is very difficult to manage. For the convenience of work, several shells were developed first Volkov Commander, and after more popular - Norton Commander.

- In the late twentieth century, Microsoftprovided users with a completely new OS - Windows. Management in it took place through various "windows", which in principle, and formed the basis of the name. This system quickly gained popularity due to its ease of operation and availability. At the moment, Windows is the most popular operating system in the world.

Despite the differences in the program code and functions, the composition of the OS remains the same for all. It includes:

- a software module that provides communication with the file system;

- command processor - a program that provides the execution of commands that the user specifies;

- a set of system drivers - programs that ensure the smooth operation of various external and internal modules. The drivers are responsible for the operation of both the printer and the motherboard;

- Graphical interface module - a set of programs that allow you to use the mouse when entering a command;

- utilities - service discs of the program. Operations with files occur also due to their use;

- information module - an application that provides information about the current state of the system.

To store information, variousphysical media (hard disk, flash card, etc.), but for the program to work it must be loaded into internal memory. The speed of the PC depends directly on the amount of internal memory.