Computer System Overview
A computer system is composed of hardware and software components that work together to perform various tasks. The hardware components include the physical devices that make up the computer, such as the processor, memory, hard disk, input/output devices, and other peripherals. The software components include the programs that run on the computer, such as the operating system, applications, and utilities.
Here is a brief overview of the different components of a computer system Architecture:
- Processor: The central processing unit (CPU) is the brain of the computer system. It executes instructions and performs calculations and data processing.
- Memory: The memory of a computer system stores data and instructions that are currently being used by the processor. This includes the RAM (Random Access Memory) and cache memory.
- Hard Disk: The hard disk is the primary storage device of a computer system. It stores all the data and programs that are not currently being used by the processor.
- Input Devices: Input devices allow users to input data and commands into the computer system. This includes devices such as the keyboard, mouse, touchpad, and microphone.
- Output Devices: Output devices display information to the user. This includes devices such as the monitor, printer, speakers, and headphones.
- Operating System: The operating system is a software component that manages and controls the resources of the computer system. It provides a platform for applications to run and interact with hardware components.
- Applications: Applications are software programs that perform specific tasks, such as word processing, image editing, or web browsing.
- Utilities: Utilities are software programs that perform system maintenance and optimization tasks, such as disk cleanup, antivirus scanning, and system backup.
Overall, a computer system is a complex and interconnected system that requires hardware and software components to work together seamlessly in order to perform various tasks and functions.
What is Operating System and What are the Gols and Structure Of Operating System
An Operating System (OS) is a software program that manages and controls the resources of a computer system. It is the most important type of system software that sits between the hardware components of a computer system and the software applications that run on it. The OS manages hardware resources such as CPU, memory, and input/output devices, and provides common services that are required by applications.
Structure:
The structure of an OS is hierarchical, with the kernel at the center. The kernel is responsible for managing system resources, such as CPU, memory, and input/output devices.
The kernel interacts with device drivers, which enable communication between the hardware components and the OS. The OS also includes system libraries, which provide functions and services to applications.
Goal:
The primary goal of an OS is to provide a platform for applications to run and interact with hardware components in a secure and efficient manner. It does this by providing a layer of abstraction between the hardware and software components, shielding applications from the complexities of the underlying hardware.
Overall, the structure and goals of an OS are designed to provide a stable, secure, and efficient environment for applications to run and for users to interact with the computer system.