User operating system interface.

User Interface(GUI) A User Interface (UI) enables communication by serving as an interface between an application and its user.  For effective communication, each program,...

Operating System Services.

An Operating System is an interface between a user and computer hardware. An operating system is a software which performs all the basic tasks like file management, memory management,...

Introduction to Operating Systems

What is an Operating System? Operating system is a system software which is required in order to run application programs and utilities. It perform interaction between application...

Study of Processor principle and cooling system in computer.

The Processor The CPU is also one of the most expensive components on the motherboard. It is a very delicate device and sensitive to ESD, thus it should be handled with...

Study of joystick and Plotter.

What does Joystick mean? A joystick is an input device that can be used for controlling the movement of the cursor or a pointer in a computer device. The pointer/cursor...

System Calls

To understand system calls, first one needs to understand the difference between kernel mode and user mode of a CPU. Every modern operating system supports these...

Secondary Storage Structure

Secondary storage devices are those devices whose memory is non volatile, meaning, the stored data will be intact even if the system is turned off. Here are a few things worth noting...