Operating system
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This document discusses operating systems and provides details about types of operating systems. It begins with an acknowledgment and then covers the contents which include what an operating system is, its functions, characteristics, and types. The functions section explains process management, memory management, file management, device management, and security. It then discusses the characteristics of time sharing, multiprocessing, distributed systems, and real-time systems. Finally, it lists some types of operating systems like UNIX, Mac OS, MS-DOS, Windows 95, Windows XP, and Windows 7 along with their basic features.
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Operating systems
The document discusses computer operating systems and their key functions. It defines an operating system as the set of programs that manage computer hardware resources and allow application software to run. It lists some popular operating systems and describes key operating system functions like processor management, file management, user interface, memory management, and device management.
Intro ch 07_a
This document discusses operating systems and their core functions. It describes different types of operating systems including real-time, single-user/single-tasking, single-user/multitasking, and multi-user/multitasking. The key functions of operating systems are providing a user interface, running programs, managing hardware devices, and organizing file storage. Graphical user interfaces and command line interfaces are discussed. Utilities that enhance operating systems like backup software, anti-virus software, firewalls, and intrusion detection are also outlined.
operating system
The document provides information about operating systems including:
1. It defines an operating system as a program that manages computer hardware and software resources and acts as an interface between users and applications.
2. It describes the layers of an operating system including the kernel, system libraries, shell/commands, and user applications/GUIs.
3. It discusses the history of operating systems from early batch processing systems to modern single-user and multi-user systems with graphical interfaces.
operating systems
The document defines an operating system as a set of programs that manage computer hardware resources and provide common services for application software. It is the most important program that runs on a computer and allows other programs to interact with hardware by following rules programmed into the OS. Key functions of an OS include managing memory, enabling multitasking, providing disk access/file systems, supporting device drivers, networking, security features, and graphical user interfaces. Popular examples of operating systems mentioned are Windows, Linux, Android, and Mac OS X.
Intro ch 07_a
Operating systems provide a user interface, run programs, manage hardware devices, and organize file storage. There are several types of operating systems including real-time, single-user/single-tasking, single-user/multitasking, and multi-user/multitasking. Operating systems provide a graphical user interface or command line interface for users. They run programs through system calls, manage hardware through interrupts and device drivers, and organize files and folders in a consistent way across storage devices. Operating systems can be enhanced with utilities like backup software, antivirus software, firewalls, and intrusion detection to provide additional services beyond the core functions.
Os
The document discusses operating systems, defining them as an interface between the user and hardware. It describes the goals of operating systems and different types, including single-user and multi-user operating systems. The key characteristics of operating systems are also outlined, such as user interface, memory management, process management, file management, and security management.
Operating System's Concept, Working, Types, Part, and Many More
An operating system (OS) is software that manages computer hardware resources and provides common services for computer programs. The OS acts as an intermediary between users and the computer hardware. Modern computers consist of processors, memory, disks, printers, and input/output devices that all need to be managed by the OS. The main functions of an OS include providing a user interface, allowing users to run programs, managing hardware devices, organizing file storage, and allocating processor and memory resources. OSes also provide security, error handling, and accounting services. Common types of OSes include single-user and multi-user systems, as well as single-tasking and multi-tasking OSes. Utilities like backup software, antivirus
Session 4 Introduction to Operating Systems
This document provides an introduction to operating systems. It defines the differences between software and programs, describing programs as sets of instructions and software as interlinked programs. It outlines the two main types of software: application software, designed for specific tasks, and systems software, which is essential for using a computer and includes operating systems. The document then discusses operating systems in more detail, describing their functions like managing computer resources, receiving input/output, handling data transfer, and memory and process management. It also covers the hardware/software interface and the two main types of user interfaces: text-based and graphical user interfaces.
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Operating systems
The document discusses computer operating systems and their key functions. It defines an operating system as the set of programs that manage computer hardware resources and allow application software to run. It lists some popular operating systems and describes key operating system functions like processor management, file management, user interface, memory management, and device management.
Intro ch 07_a
This document discusses operating systems and their core functions. It describes different types of operating systems including real-time, single-user/single-tasking, single-user/multitasking, and multi-user/multitasking. The key functions of operating systems are providing a user interface, running programs, managing hardware devices, and organizing file storage. Graphical user interfaces and command line interfaces are discussed. Utilities that enhance operating systems like backup software, anti-virus software, firewalls, and intrusion detection are also outlined.
operating system
The document provides information about operating systems including:
1. It defines an operating system as a program that manages computer hardware and software resources and acts as an interface between users and applications.
2. It describes the layers of an operating system including the kernel, system libraries, shell/commands, and user applications/GUIs.
3. It discusses the history of operating systems from early batch processing systems to modern single-user and multi-user systems with graphical interfaces.
operating systems
The document defines an operating system as a set of programs that manage computer hardware resources and provide common services for application software. It is the most important program that runs on a computer and allows other programs to interact with hardware by following rules programmed into the OS. Key functions of an OS include managing memory, enabling multitasking, providing disk access/file systems, supporting device drivers, networking, security features, and graphical user interfaces. Popular examples of operating systems mentioned are Windows, Linux, Android, and Mac OS X.
Intro ch 07_a
Operating systems provide a user interface, run programs, manage hardware devices, and organize file storage. There are several types of operating systems including real-time, single-user/single-tasking, single-user/multitasking, and multi-user/multitasking. Operating systems provide a graphical user interface or command line interface for users. They run programs through system calls, manage hardware through interrupts and device drivers, and organize files and folders in a consistent way across storage devices. Operating systems can be enhanced with utilities like backup software, antivirus software, firewalls, and intrusion detection to provide additional services beyond the core functions.
Os
The document discusses operating systems, defining them as an interface between the user and hardware. It describes the goals of operating systems and different types, including single-user and multi-user operating systems. The key characteristics of operating systems are also outlined, such as user interface, memory management, process management, file management, and security management.
Operating System's Concept, Working, Types, Part, and Many More
An operating system (OS) is software that manages computer hardware resources and provides common services for computer programs. The OS acts as an intermediary between users and the computer hardware. Modern computers consist of processors, memory, disks, printers, and input/output devices that all need to be managed by the OS. The main functions of an OS include providing a user interface, allowing users to run programs, managing hardware devices, organizing file storage, and allocating processor and memory resources. OSes also provide security, error handling, and accounting services. Common types of OSes include single-user and multi-user systems, as well as single-tasking and multi-tasking OSes. Utilities like backup software, antivirus
Session 4 Introduction to Operating Systems
This document provides an introduction to operating systems. It defines the differences between software and programs, describing programs as sets of instructions and software as interlinked programs. It outlines the two main types of software: application software, designed for specific tasks, and systems software, which is essential for using a computer and includes operating systems. The document then discusses operating systems in more detail, describing their functions like managing computer resources, receiving input/output, handling data transfer, and memory and process management. It also covers the hardware/software interface and the two main types of user interfaces: text-based and graphical user interfaces.
Function of Operating system
System is a collection of programs which control the overall functions of which control the overall functions of computer.
An operating system is a program that acts as an interface between the user of a computer and the computer hardware. The purpose of operating system is to provide an environment in which a user can execute programs in a efficient manner. Operating system also acts as a platform on which various application programs such as word processor and excel are executed.
Java operating system
JavaOS was an operating system developed by Sun Microsystems that used a Java virtual machine as its core component. Unlike other systems written in C, JavaOS was primarily written in Java. It ran on devices like set-top boxes and ATMs but was later deprecated. Other similar Java-based operating systems included JexeOS, JX, SavaJe, and Vino, though most were unsuccessful or abandoned. The Java Desktop System, while using a Java name, was actually based on GNOME and not fully written in Java. It aimed to provide a desktop experience for Solaris and later Oracle Solaris but was ultimately discontinued.
Lecture 4
The document discusses the major parts of an operating system. It describes the kernel as handling tasks like loading applications into memory, scheduling processes, and managing memory, files, and data security. It also discusses device drivers that allow the operating system to communicate with hardware, and the user interface that users interact with, such as graphical user interfaces with icons, pointers, windows, menus and desktops. Modes like protected mode and supervisor mode are described as well as how programs are executed with operating system services. Interrupts and how they allow the operating system to interact with events are covered, along with operating system security features like access control and authentication.
Understanding Computers: Today and Tomorrow, 13th Edition Chapter 5 - System ...
Objectives
- Understand the difference between system software and application software.
- Explain the different functions of an operating system and discuss some ways that operating systems can enhance processing efficiency.
- List several ways in which operating systems differ from one another.
- Name today’s most widely used operating systems for personal computers and servers.
-State several devices other than personal computers and servers that require an operating system and list one possible operating system for each type of device.
- Discuss the role of utility programs and outline several tasks these programs perform.
- Describe what the operating systems of the future might be like.
Operating system-1
Introduction Operating system
What is Operating System
Operating System Software
main memory Management
processor management
Device Management
A brief History Of Machine
Mini computer
Super Computer
Micro Computer
Types of Operating system
Object Oriented Design
Computer Operating System
An operating system is a set of programs that controls a computer and provides an interface between the user and hardware. It makes the computer more convenient to use by managing resources and making the system easier to use. Some key functions of an operating system include process management, memory management, file management, security, and command interpretation. Popular operating systems can be single-user or multi-user systems and include multiprocessing operating systems like Linux, Unix, and Windows 2000. An operating system is crucial for running applications and allowing work to be done on a computer.
Os services
The document discusses several key services provided by operating systems, including program execution, I/O operations, file manipulation, communications, and error detection. It notes that operating systems provide functions helpful to users like user interfaces, as well as ensuring efficient system operation through resource allocation, accounting, protection, and security.
Operating system Tutorial.
What is operating system? Operating System and Its Function. Advantages and Disadvantages of Major OS’s. History of GNU/Linux. Features of Linux OS. The Indianized version of GNU/Linux OS: BOSS (Bharat Operating System Solutions). Directory Structure of Linux OS and Windows OS.
Os introduction
The operating system acts as an intermediary between the user and computer hardware, executing programs and making the computer convenient to use. It controls and coordinates hardware resources like the CPU, memory and I/O devices among application programs for various users. Key functions of the OS include providing an execution environment through processes, files, interrupts and I/O, as well as error handling, protection, failure recovery, and managing resources like time, space, synchronization and accounting.
Operating system Chapter One
The document provides an introduction to operating systems, including definitions, components, and roles. It discusses the four main components of a computer system, and the roles of an operating system from both the user and system viewpoints. It also summarizes the storage device hierarchy, including main memory and secondary storage. Finally, it outlines some key functions of operating systems, such as process management, memory management, storage management, file system management, mass storage management, I/O systems, and more.
Operating system
The document discusses operating systems and their functions. An operating system manages computer hardware resources and enables communication between hardware and software. Early systems used command line interfaces while modern systems use graphical user interfaces (GUIs) with icons that are easier to use. Operating systems perform basic tasks like memory allocation, task prioritization, input/output control, networking, file management, and error detection. Key features of operating systems include multitasking, allowing multiple programs to run simultaneously; multi-user support to allow multiple users; and multithreading to allow parts of a program to run concurrently.
Operating Systems
The document discusses operating systems and includes the following information:
1. It provides a list of students with their roll numbers and defines what an operating system is as a set of computer programs that controls hardware and acts as an interface between software and hardware.
2. It discusses why operating systems are studied and some of their key components and functions such as processor management, memory management, and file system management.
3. It provides examples of different types of operating systems like real-time operating systems, single-user operating systems, and multi-user operating systems and gives prices for some common operating systems like Windows, Mac OS, Linux, and Android.
Operating Systems 1: Syllabus
This document outlines an introduction to operating systems module. It will introduce students to fundamental operating system concepts like processes, memory management, and file systems. Students will learn through lectures, practical exercises with different operating systems, and assignments. The module aims to give students an understanding of operating system design principles, proficiency using an operating system, and knowledge of components and interactions within a modern operating system. Assessment will be through exams and continuous assessment.
Operating systems introduction
Operating Systems, Introduction of OS, Objectives of OS, Service provided by the OS, OS as resource manager, Evolution of OS, Simple batch systems, Multi programmed batch systems, Time sharing systems, Major achievements of OS, Process, memory management, information protection and security, scheduling and resource management, System structure of OS, developments leading to modern operating systems, microkernal architecture, multithreading, distributed OS, Symmetric multiprocessing, object oriented design
Inside Memory and CPU -2
1) The document provides instructions for a computer tech class, including homework assignments that are due by Friday.
2) Students are instructed to log on to the LearningPoint platform to access assignments on computer parts and peripherals as well as a typing tutor.
3) The document explains the basic components of a computer including the central processing unit (CPU), random access memory (RAM), and read-only memory (ROM) and their functions.
Operating Systems
The document discusses operating systems, their functions, and examples. It explains that an operating system schedules CPU time, loads and runs applications, communicates with hardware, and provides security and file management. The document also discusses multi-user operating systems and how they allow powerful computers to be shared among multiple users simultaneously.
Information Computer Technology Handouts (Part I)
The document discusses system software and application software. System software includes operating systems and utility programs. The main functions of an operating system are to start and shut down the computer, provide a user interface, manage programs and memory, coordinate tasks, configure devices, establish internet connections, monitor performance, provide utilities, automatically update, control networks, and administer security. Utility programs allow users to perform maintenance tasks like file management, searching, uninstalling programs, disk cleanup, and backups. The document also discusses types of operating systems, functions of utility programs, categories of application software including business, graphics/multimedia, home/personal/educational, and communications software. It provides details on forms of application software and defines malware.
2 opreating system
The document discusses the key components and functions of an operating system:
1. It manages computer hardware resources and allows for the execution of user programs and applications.
2. It provides services like process management, memory management, file management, I/O management, and protection to programs and users.
3. Operating systems provide an interface between the user and computer system through functions like command interpretation.
Introduction to computer
In this presentation, I discuss what is a computer, parts of a computer, input, and output devices on the computer.
this is the first lesson of basic computer skills and very important for beginners.
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Function of Operating system
System is a collection of programs which control the overall functions of which control the overall functions of computer.
An operating system is a program that acts as an interface between the user of a computer and the computer hardware. The purpose of operating system is to provide an environment in which a user can execute programs in a efficient manner. Operating system also acts as a platform on which various application programs such as word processor and excel are executed.
Java operating system
JavaOS was an operating system developed by Sun Microsystems that used a Java virtual machine as its core component. Unlike other systems written in C, JavaOS was primarily written in Java. It ran on devices like set-top boxes and ATMs but was later deprecated. Other similar Java-based operating systems included JexeOS, JX, SavaJe, and Vino, though most were unsuccessful or abandoned. The Java Desktop System, while using a Java name, was actually based on GNOME and not fully written in Java. It aimed to provide a desktop experience for Solaris and later Oracle Solaris but was ultimately discontinued.
Lecture 4
The document discusses the major parts of an operating system. It describes the kernel as handling tasks like loading applications into memory, scheduling processes, and managing memory, files, and data security. It also discusses device drivers that allow the operating system to communicate with hardware, and the user interface that users interact with, such as graphical user interfaces with icons, pointers, windows, menus and desktops. Modes like protected mode and supervisor mode are described as well as how programs are executed with operating system services. Interrupts and how they allow the operating system to interact with events are covered, along with operating system security features like access control and authentication.
Understanding Computers: Today and Tomorrow, 13th Edition Chapter 5 - System ...
Objectives
- Understand the difference between system software and application software.
- Explain the different functions of an operating system and discuss some ways that operating systems can enhance processing efficiency.
- List several ways in which operating systems differ from one another.
- Name today’s most widely used operating systems for personal computers and servers.
-State several devices other than personal computers and servers that require an operating system and list one possible operating system for each type of device.
- Discuss the role of utility programs and outline several tasks these programs perform.
- Describe what the operating systems of the future might be like.
Operating system-1
Introduction Operating system
What is Operating System
Operating System Software
main memory Management
processor management
Device Management
A brief History Of Machine
Mini computer
Super Computer
Micro Computer
Types of Operating system
Object Oriented Design
Computer Operating System
An operating system is a set of programs that controls a computer and provides an interface between the user and hardware. It makes the computer more convenient to use by managing resources and making the system easier to use. Some key functions of an operating system include process management, memory management, file management, security, and command interpretation. Popular operating systems can be single-user or multi-user systems and include multiprocessing operating systems like Linux, Unix, and Windows 2000. An operating system is crucial for running applications and allowing work to be done on a computer.
Os services
The document discusses several key services provided by operating systems, including program execution, I/O operations, file manipulation, communications, and error detection. It notes that operating systems provide functions helpful to users like user interfaces, as well as ensuring efficient system operation through resource allocation, accounting, protection, and security.
Operating system Tutorial.
What is operating system? Operating System and Its Function. Advantages and Disadvantages of Major OS’s. History of GNU/Linux. Features of Linux OS. The Indianized version of GNU/Linux OS: BOSS (Bharat Operating System Solutions). Directory Structure of Linux OS and Windows OS.
Os introduction
The operating system acts as an intermediary between the user and computer hardware, executing programs and making the computer convenient to use. It controls and coordinates hardware resources like the CPU, memory and I/O devices among application programs for various users. Key functions of the OS include providing an execution environment through processes, files, interrupts and I/O, as well as error handling, protection, failure recovery, and managing resources like time, space, synchronization and accounting.
Operating system Chapter One
The document provides an introduction to operating systems, including definitions, components, and roles. It discusses the four main components of a computer system, and the roles of an operating system from both the user and system viewpoints. It also summarizes the storage device hierarchy, including main memory and secondary storage. Finally, it outlines some key functions of operating systems, such as process management, memory management, storage management, file system management, mass storage management, I/O systems, and more.
Operating system
The document discusses operating systems and their functions. An operating system manages computer hardware resources and enables communication between hardware and software. Early systems used command line interfaces while modern systems use graphical user interfaces (GUIs) with icons that are easier to use. Operating systems perform basic tasks like memory allocation, task prioritization, input/output control, networking, file management, and error detection. Key features of operating systems include multitasking, allowing multiple programs to run simultaneously; multi-user support to allow multiple users; and multithreading to allow parts of a program to run concurrently.
Operating Systems
The document discusses operating systems and includes the following information:
1. It provides a list of students with their roll numbers and defines what an operating system is as a set of computer programs that controls hardware and acts as an interface between software and hardware.
2. It discusses why operating systems are studied and some of their key components and functions such as processor management, memory management, and file system management.
3. It provides examples of different types of operating systems like real-time operating systems, single-user operating systems, and multi-user operating systems and gives prices for some common operating systems like Windows, Mac OS, Linux, and Android.
Operating Systems 1: Syllabus
This document outlines an introduction to operating systems module. It will introduce students to fundamental operating system concepts like processes, memory management, and file systems. Students will learn through lectures, practical exercises with different operating systems, and assignments. The module aims to give students an understanding of operating system design principles, proficiency using an operating system, and knowledge of components and interactions within a modern operating system. Assessment will be through exams and continuous assessment.
Operating systems introduction
Operating Systems, Introduction of OS, Objectives of OS, Service provided by the OS, OS as resource manager, Evolution of OS, Simple batch systems, Multi programmed batch systems, Time sharing systems, Major achievements of OS, Process, memory management, information protection and security, scheduling and resource management, System structure of OS, developments leading to modern operating systems, microkernal architecture, multithreading, distributed OS, Symmetric multiprocessing, object oriented design
Inside Memory and CPU -2
1) The document provides instructions for a computer tech class, including homework assignments that are due by Friday.
2) Students are instructed to log on to the LearningPoint platform to access assignments on computer parts and peripherals as well as a typing tutor.
3) The document explains the basic components of a computer including the central processing unit (CPU), random access memory (RAM), and read-only memory (ROM) and their functions.
Operating Systems
The document discusses operating systems, their functions, and examples. It explains that an operating system schedules CPU time, loads and runs applications, communicates with hardware, and provides security and file management. The document also discusses multi-user operating systems and how they allow powerful computers to be shared among multiple users simultaneously.
Information Computer Technology Handouts (Part I)
The document discusses system software and application software. System software includes operating systems and utility programs. The main functions of an operating system are to start and shut down the computer, provide a user interface, manage programs and memory, coordinate tasks, configure devices, establish internet connections, monitor performance, provide utilities, automatically update, control networks, and administer security. Utility programs allow users to perform maintenance tasks like file management, searching, uninstalling programs, disk cleanup, and backups. The document also discusses types of operating systems, functions of utility programs, categories of application software including business, graphics/multimedia, home/personal/educational, and communications software. It provides details on forms of application software and defines malware.
2 opreating system
The document discusses the key components and functions of an operating system:
1. It manages computer hardware resources and allows for the execution of user programs and applications.
2. It provides services like process management, memory management, file management, I/O management, and protection to programs and users.
3. Operating systems provide an interface between the user and computer system through functions like command interpretation.
Introduction to computer
In this presentation, I discuss what is a computer, parts of a computer, input, and output devices on the computer.
this is the first lesson of basic computer skills and very important for beginners.
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Understanding Computers: Today and Tomorrow, 13th Edition Chapter 5 - System ...
Understanding Computers: Today and Tomorrow, 13th Edition Chapter 5 - System ...
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This document discusses operating systems and provides details about types of operating systems. It begins with an acknowledgment and then covers the contents which include what an operating system is, its functions, characteristics, and types. The functions section explains process management, memory management, file management, device management, and security. It then discusses the characteristics of time sharing, multiprocessing, distributed systems, and real-time systems. Finally, it lists some types of operating systems like UNIX, Mac OS, MS-DOS, Windows 95, Windows XP, and Windows 7 along with their basic features.
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Through this PPT you may learned about Operating System, Types of OS, History of OS, Operating System Software, Gives detailed information about Device Management, Memory Management, File Management
Basics of Operating System
The document discusses operating systems and their key functions. It defines an operating system as a program that acts as an intermediary between the user and computer hardware. The main goals of an operating system are to execute user programs, make problem solving easier for users, and efficiently use computer hardware. It also controls low-level components like the CPU, memory, and I/O devices, and coordinates their use among application programs and users.
unit1 part1.ppt
The document provides an overview of operating system concepts, including definitions of an operating system, its functions, and different types of systems. It discusses mainframe systems using simple batch and multiprogramming operating systems. It also covers time-sharing/multitasking systems, desktop systems, and multiprocessor/parallel systems. The key functions of an operating system are described as process management, memory management, file management, device management, and security.
Operating Systems Genesis, Development and Functions m.pptx
The document discusses operating systems, including their functions, goals, historical development, and types used in different computers. It provides an overview of how operating systems act as an interface between the user and computer hardware, manage resources and allow for easier programming. Key points include that operating systems evolved from batch processing to support timesharing, personal computing and distributed systems. The types of operating systems depend on factors like response time and how data is input, with examples being batch, interactive, real-time, hybrid and embedded systems.
Operating System Introduction
This document provides an overview of operating systems, including their objectives, structure, and evolution. It discusses the major components of operating systems, such as process management, memory management, file management, I/O management, and protection/security. The operating system acts as an intermediary between the user and computer hardware, and is responsible for executing user programs, making the computer convenient to use, and efficiently managing system resources.
Lec # 1 chapter 2
The document provides an overview of operating systems, describing their functions such as managing resources, acting as an interface between hardware and software, and providing services like I/O control and error handling. It discusses the evolution of operating systems from simple batch systems to time-sharing systems. Key concepts in OS development include processes, memory management, security, scheduling, and a layered system structure.
Operating System Basics.ppt
Operating system basics provides new comers in IT to help understanding basic concepts of operating systems and errors, programs, manage hardware devices
4 operating system basics
The document discusses operating system basics, including defining an operating system as a program that controls hardware and application execution. It describes the objectives of operating systems as providing convenience, efficiency, and ability to evolve. It outlines the layers of a computer system and services provided by operating systems like program development, execution, I/O access, and error detection. It also explains the functions of operating systems in providing user interfaces, running programs, managing hardware, and organizing files. Finally, it discusses types of operating systems and ways to enhance an operating system with utilities like backup software, anti-virus, and firewalls.
platform-technologies_compress.pdf
A platform is the basic hardware and software that allows other applications and technologies to be developed on top of it. There are many types of platforms including operating systems, computing platforms, database platforms, storage platforms, application platforms, mobile platforms, and web platforms. An operating system is system software that manages computer hardware, software resources, and provides common services. It performs functions like process management, memory management, file management, device management, I/O management, and security. Popular operating systems currently include Windows, Android, iOS, Mac OS, and Linux.
Chapter - 1
The document discusses the history and concepts of modern operating systems. It covers four generations of operating systems:
1) Vacuum tubes (1945-1955): Large, slow computers that were programmed and operated directly by engineers.
2) Transistors and batch systems (1955-1965): Systems managed by professional operators using punch cards. Programs were run in batches.
3) Integrated circuits and multiprogramming (1965-1980): OS/360 introduced techniques like multiprogramming and spooling to improve efficiency. Timesharing systems like Multics provided interactive use.
4) Personal computers (1980-present): Lower-cost systems led to popular OS like CP/M, DOS, and
2018 FRecure CISSP Mentor Program- Session 4
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Operating system
- 1. OPERATING SYSTEM INFORMATION TECHNOLOGY TRAINING
- 2. Submitted by- Archit Garg CRO0407919 Submitted to- Priyank Varshney INFORMATION TECHNOLOGY TRAINING
- 3. ACKNOWLEDGMENT I would like to express my special thanks of gratitude to my teacher ‘CA. Priyank Varshney’ who gave me the golden opportunity to do this wonderful project on the topic ‘Operating System’, which also helped me in doing a lot of research and I came to know about so many new things. INFORMATION TECHNOLOGY TRAINING
- 4. CONTENTS What is an Operating system? Functions Characteristics Types of operating system INFORMATION TECHNOLOGY TRAINING
- 5. An interface between users and hardware Manages computer hardware and software Allows efficient usage Provides information Protection Acts as control program INFORMATION TECHNOLOGY TRAINING
- 6. FUNCTIONS Process Management- Some major activities:- 1.Creation and deletion of user and system processes 2.Suspension and resumption of processes 3.A mechanism for process synchronization Memory Management- Some major activities:- 1.To keep track of ‘which part of memory are currently being used and by whom’ 2.To decide ‘which process is loaded into memory when memory space becomes available; and to allocate and de-allocate memory space, as needed Continue….. INFORMATION TECHNOLOGY TRAINING
- 7. CONTINUE….. File Management- Some major activities:- 1.The creation and deletion of files; 2.The creation and deletion of directions; 3.The backup of files on stable storage media Device Management- A computer system consists of I/O devices such as printer, mouse, keyboard. The device management module of an operating system takes care of all I/O devices. Continue….. INFORMATION TECHNOLOGY TRAINING
- 8. CONTINUE….. Security- Computer systems often store large amounts of information, some of which is highly sensitive and valuable. Users can trust the system and rely on it against destruction and unauthorized access INFORMATION TECHNOLOGY TRAINING
- 9. Time Sharing - Provides simultaneous use of computer by many user Characteristics Multiprocessing –Multiple CPU’s execute work of many people Distributed Systems – several computers are connected together to share resources Real time systems – It gives rapid response time, e.g..- Facebook, Twitter INFORMATION TECHNOLOGY TRAINING
- 10. • TYPES OF OPERATING SYSTEM 1.UNIX Developed in 1969 by AT&T at Bell Labs Multi-User Computer Operating System Used for internet servers, workstations, and mainframe computers Main feature- Portability INFORMATION TECHNOLOGY TRAINING
- 11. First introduced in 1984 It is a series of graphical user interface based OS It is world's most advanced OS Ability to run apps It has a 64-bit architecture INFORMATION TECHNOLOGY TRAINING 2.Mac OS:-
- 12. It is a single-user, single-tasking computer OS It uses command line interface Released in 1981 It was 16-bit OS It was designed by Microsoft and IBM INFORMATION TECHNOLOGY TRAINING 3.MS-DOS:-
- 13. Windows 95:- • Minimum system requirement • Released in1995 • It was also referred as Windows 4.0 • ‘Plug and Play’ feature was introduced INFORMATION TECHNOLOGY TRAINING Processor 386DX RAM 4 MB Hard Drive 128 MB
- 14. Windows XP:- • Launched in October 2001 • XP was successor of windows 2000 • Minimum requirement • Multiprocessor Support • Security against virus attack INFORMATION TECHNOLOGY TRAINING Processor Pentium 233 MHZ RAM 64 MB Hard Disk 1.5 GB
- 15. Windows 7:- • A redesigned taskbar and multi-touch support • Minimum requirement • Better search facility for files and documents • Improved GUI • Better Security • Support Multi-core Processor INFORMATION TECHNOLOGY TRAINING Processor 1 GHZ RAM 2 GB Hard Disk 16 GB Graphics DirectX 9
- 16. THANK YOU INFORMATION TECHNOLOGY TRAINING