Operating system or OS is a software system that served to make the control and management of hardware and basic system operations, including the software applications such as word processing programs and web browsers.
In general, the Operating System software is the first layer is placed on the computer memory when the computer starts. While other software is run after the OS is running, and the Operating System will perform the core public service for the software. Core public services such as access to the disk, memory management, task scheduling, and user interface. So that each software does not need to perform tasks common core, as can be managed and conducted by the Operating System. The code of tasks and common core is called the “kernel” of an Operating System.
he term often Operating System software is addressed to all who enter in one package with the computer system before the software applications installed. In computer science, operating system or in English: the operating system or OS is a software system that served to make the control and management of hardware and basic system operations, including the software applications such as word processing programs and web browsers.
In general, the Operating System software is the first layer placed on the computer memory when the computer starts. While other software is run after the OS is running, and the Operating System will perform the core public service for the software. Core public services such as access to the disk, memory management, task scheduling, and user interface. So that each software does not need to perform tasks common core, as can be managed and conducted by the Operating System. The code of tasks and common core is called the “kernel” of an Operating System
If the computer system divided into layers, then the Operating System is the layer between the hardware and software layer. More than the Operating System to perform all tasks necessary in the computer, and ensure that different applications can run simultaneously with the current. Operating System ensure other software applications can use the memory, perform input and output of other equipment, and have access to the file system. When running several applications simultaneously, then the Operating System schedule the right, so far as possible all the running processes get enough time to use the processor (CPU) and do not interfere with each other.
In many cases, the Operating System provides a library of standard functions, which other applications can call functions, so that in every creation of new programs, no need to create these functions from scratch.
Operating systems generally consist of several parts:
1. Boot mechanism, namely to put the kernel in memory
2. Kernel, the core of an Operating System
3. Command Interpreter or shell, which reads input from the user
4. Libraries, which provides the basic set of functions and standards that can be called by other applications
5. Drivers to interact with external hardware, as well as to control them.
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