The user interface components of the windows operating system are explained below.The main components are GUI (Graphical user interface). It is made of four parts as follows −WindowsIconsMenusPointerThe common windows controls are as follows −MinimizingMaximizingExit tabsGUI basic components are as follows −Start menu and programming groups.Task-bar shows running programs.Desktop shows ... Read More

Components of UNIXGenerally, a computer system consists of four main components, called hardware, application programs, operating system, and users.Hardware − Physical devices are nothing but which we can touch and feel.Operating system − It allows the user to communicate with the hardware.Application − There are software programs which give some ... Read More

A modern computer consists of the following −One or more processorsMain memoryDisksPrintersVarious input/output devices.So, to manage all these components, we require a layer of software in the computer system, that layer we call the Operating System (OS).An Operating System is a program that acts as an intermediary or interface between ... Read More

Message Passing provides a mechanism to allow processes to communicate and to synchronize their actions without sharing the same address space.For example − chat programs on World Wide Web.Now let us discuss the message passing step by step.Step 1 − Message passing provides two operations which are as follows −Send ... Read More

Inter process communication requires communicating to establish a shared memory region. A shared memory region is present in the address space for the process that creates the shared memory segment. And other processes are communicating using a shared memory segment that is attaching it to their address space.Operating system prevents ... Read More

Shared memory system is the fundamental model of inter process communication. In a shared memory system, in the address space region the cooperating communicate with each other by establishing the shared memory region.Shared memory concept works on fastest inter process communication.If the process wants to initiate the communication and it ... Read More

When the user wants to give an instruction to the OS then it will do it through system calls. Or a user program can access the kernel which is a part of the OS through system calls.It is a programmatic way in which a computer program requests a service from ... Read More

A process is a program in execution and it is more than a program code called as text section and this concept works under all the operating system because all the task perform by the operating system needs a process to perform the taskThe process executes when it changes state. ... Read More

UNIX is one of the most popular operating systems on multi-user systems. Actually, it originated as a single-user system. It has limited structuring.UNIX OS consists of two separable parts which are as follows −System programs.Kernel.Now, let us see the architecture of UNIX.Unix ArchitectureUnix operating system architecture is divided into four ... Read More

A process can create several new processes through creating process system calls during the process execution. Creating a process we call it the parent process and the new process is a child process.Every new process creates another process forming a tree-like structure. It can be identified with a unique process ... Read More