the main components of the operating system

The operating System has three main components namely:

1. the Kernel

The Kernel is a piece of software (the program) that make up the system and has the task to serve all kinds of application programs to access the hardware computer safely and under control. Because of limited access to hardware, whereas there is more than one program to be served in the same time, the kernel also served to regulate when and some old programs can use one piece of hardware.

It is named as multiplexing.

Access to the hardware directly is a complex problem, because it's usually implement a kernel abstraction (a general overview about) hardware.Abstraction-Abstraction is a way to hide the complexity and allows access to the hardware becomes easy and uniform. So it is, abstractions (a general overview) this eventually eases the job of programmers.

To run a computer we can not use the operating system kernel. A program can be directly loaded and executed on-machine computer, i.e. If the programmer wants to do perkerjaannya without the help of a hardware abstraction or operating system help. This technique used on early generation computer. So when we want to move from one program to another program, we must reset and load back those programs.