Operating System (OS)

-

 

🖥️ Operating System (OS)

🔹 What is an Operating System?

An Operating System (OS) is system software that acts as a bridge between the user and computer hardware.

👉 Without OS, a computer cannot work.

🔹 Functions of Operating System

  • Process Management

  • Memory Management

  • File Management

  • Device Management

  • Security

  • User Interface

  • Task Scheduling

🔹 Types of Operating Systems

  • Single User

  • Multi User

  • Batch OS

  • Time Sharing OS

  • Real Time OS

  • Distributed OS

🪟 Windows Operating System

🔹 Introduction

Windows is a GUI-based operating system developed by Microsoft.

👉 It is the most popular OS for personal computers.

🔹 Features of Windows

  • Graphical User Interface (GUI)

  • Easy to use

  • Multitasking

  • Plug and Play

  • Security (Firewall, Defender)

  • Software compatibility

🔹 Versions of Windows

  • Windows 7

  • Windows 8

  • Windows 10

  • Windows 11

🔹 Uses of Windows

  • Office work

  • Gaming

  • Internet browsing

  • Programming

  • Multimedia

🐧 Linux Operating System

🔹 Introduction

Linux is a free and open-source operating system created by Linus Torvalds.

👉 It is secure, fast, and customizable.

🔹 Features of Linux

  • Open source

  • High security

  • Multitasking

  • Multi-user

  • Stable

  • Command Line Interface (CLI) + GUI

🔹 Linux Distributions (Distros)

  • Ubuntu

  • Fedora

  • Debian

  • Kali Linux

  • RedHat

  • Mint

🔹 Uses of Linux

  • Servers

  • Cyber Security

  • Programming

  • Ethical hacking

  • Cloud systems

🔹 Difference Between Windows & Linux

WindowsLinux
PaidFree
Closed sourceOpen source
Easy for beginnersBest for professionals
Less secureMore secure
More virusesFewer viruses

🔹 Important Short Notes

  • OS manages hardware and software.

  • Windows is developed by Microsoft.

  • Linux is open source.

  • Linux is mostly used in servers.

  • Windows is best for home users.

🎯 Exam Ready Points

  • OS is interface between user and hardware.

  • Windows uses GUI.

  • Linux supports CLI and GUI.

  • Linux is multi-user OS.

Comments

Post a Comment

Popular posts from this blog

Introduction to Computer

-
Image
Computers are electronic devices that are designed to process, store, and retrieve data. They are used for a wide variety of purposes, from personal computing to complex scientific simulations and industrial automation. A computer consists of various hardware components, including a central processing unit (CPU), memory, storage devices, input/output (I/O) devices such as keyboards, mice, and displays, and various other peripherals. Computers communicate with each other over networks, which are interconnected groups of computers that share resources and information. The internet is a global network that connects millions of computers around the world and enables communication and information sharing on an unprecedented scale. The field of computer science is concerned with the study of computers and computational systems, including their design, development, and application. It encompasses many subfields, including artificial intelligence, computer graphics, databases, programming lang...
Read more

History of Computer

-
Image
  History of Computer Topics  Definition of computer  Earliest computer  Computer History  Computer Generations Definition of Computer  Computer is a programmable machine.  Computer is a machine that manipulates data according to a list of instructions.  Computer is any device which aids humans in performing various kinds of computations or calculations.  Definition of Computer Three principles characteristic of computer:  It responds to a specific set of instructions in a well-defined manner.  It can execute a pre-recorded list of instructions.  It can quickly store and retrieve large amounts of data.  Earliest Computer  Originally calculations were computed by humans, whose job title was computers.  These human computers were typically engaged in the calculation of a mathematical expression.  The calculations of this period were specialized and expensive, requiring years of training in mathematics.  T...
Read more

Computer Generation

-
Image
 There are five generations of computer:  First generation– 1946 - 1958  Second generation– 1959 - 1964  Third generation– 1965 - 1970  Fourth generation– 1971 - today  Fifth generation– Today to future The First Generation   The first computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms.  They were very expensive to operate and in addition to using a great deal of electricity, generated a lot of heat, which was often the cause of malfunctions. The Second Generation   Transistors replaced vacuum tubes and ushered in the second generation of computers.  One transistor replaced the equivalent of 40 vacuum tubes.    Allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable.  Still generated a great deal of heat that can damage the computer. The Third Generation  The development of the integrated circuit was ...
Read more