Assignment1OS
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The document contains an assignment with 6 questions. Question 1 asks to explain 4 major functions and 4 services of an operating system. Question 2 asks to describe the main features, limitations, and strengths of 6 types of operating systems and 2 kernel types. Question 3 asks what type of OS would meet requirements in 5 environments. Question 4 contains 10 true/false statements about operating systems. Questions 5-6 ask to explain interrupt servicing mechanisms, program-controlled I/O, interrupt-driven I/O, DMA, and spooling.
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A time-sharing operating system allows multiple users to share the same computer simultaneously. It uses CPU scheduling and multiprogramming to allocate a small portion of CPU time to each user, giving them the impression that the computer is dedicated to their use alone. Processes are swapped between main memory and disk as needed to make efficient use of memory. Time-sharing operating systems provide mechanisms for concurrent execution, job synchronization, communication and memory protection since multiple jobs must reside in memory simultaneously.
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The document provides information about booting of a computer system. It discusses that booting is required because the hardware does not know where the operating system resides or how to load it. A bootstrap loader, such as BIOS, is needed to locate the kernel and load it into memory.
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The document discusses operating systems and their functions. It begins by defining an operating system as system software that manages computer hardware and resources, providing services to programs. It then discusses the dominant desktop, mobile, and server operating systems. Finally, it lists and describes several key functions of operating systems, including I/O management, memory management, process management, time sharing, security, deadlock prevention, and interrupt handling.
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- An operating system manages computer hardware and acts as an intermediary between users and the computer. It allocates resources and controls programs to prevent errors.
- The kernel is the core of the operating system that runs at all times. Batch systems allow jobs to run without user interaction. Multiprogramming and time-sharing increase CPU utilization by switching between multiple programs.
- Multiprocessor systems have multiple CPUs to improve performance. Process management, memory management, and protection systems are core components of most operating systems.
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The document discusses porting the RT Linux real-time operating system (RTOS) onto a Samsung S3Cmini2440 ARM9 board. It provides background on RTOSs, including that they guarantee tasks are completed within a specified time constraint. The document outlines the process for cross-compiling the RT Linux kernel to target the ARM architecture, adding the RT Linux patch, and using USB to transfer and boot the final RT image on the ARM board. It confirms the porting was successful if the RT image boots properly on the target hardware.
EC8791-U5-PPT.pptx
The document discusses various topics related to processes, operating systems, and real-time embedded systems design including:
1. Interprocess communication mechanisms like shared memory, message passing, signals, and mailboxes.
2. Factors that affect operating system performance such as context switching time and interrupt latency.
3. Power optimization strategies for processes including predictive shutdown and the Advanced Configuration and Power Interface standard.
4. Examples of real-time embedded system designs including an audio player, engine control unit, and video accelerator.
Os question
An operating system acts as an intermediary between the user and computer hardware. It provides a convenient environment for users to run programs efficiently and allocates system resources. The main components of a computer system are hardware, operating system, application programs, and users. Different operating systems serve different purposes based on the machine type, such as optimizing resource utilization for mainframes, supporting games and business applications for PCs, and providing easy interfaces and minimizing power consumption for handheld devices.
Types of operating system
The document discusses 5 types of operating systems: simple batch systems, multi-programming systems, real-time systems, multi-processor systems, and distributed systems. Simple batch systems execute jobs in batches when the computer is idle. Multi-programming systems allow for more than one program to reside in memory at a time, improving CPU utilization. Real-time systems ensure processes are completed within a certain time frame and are used in applications like air traffic control. Multi-processor systems use multiple CPUs to improve performance. Distributed systems leverage networked computers to increase computing power and availability.
Os
An operating system acts as an intermediary between the user and computer hardware. It provides a convenient environment for users to execute programs efficiently by allocating system resources. The main components of a computer system are the hardware, operating system, application programs, and users. Different operating systems serve different purposes based on the machine type. Some common operating systems include batched, multi-programmed, timesharing, distributed, and real-time operating systems.
Os
The three main purposes of an operating system are:
1. To provide a convenient environment for users to execute programs on computer hardware.
2. To allocate computer resources needed to execute programs safely and without affecting other users or the OS.
3. To provide a foundation for evolution to future services while still supporting existing services.
Unit 1os processes and threads
This document discusses operating systems and provides details on various topics including processes, threads, computer system structures, and types of operating systems. It defines what an operating system is and its role in managing computer hardware and resources. It also describes different types of operating systems including mainframe systems, desktop systems, real-time systems, and handheld systems. The document discusses concepts like processes, threads, multiprocessing, distributed systems, and client-server models.
Operating systems
The document provides an overview of operating systems and some of their key concepts. It discusses how operating systems act as an interface between hardware and software, allowing applications to run independently of the underlying hardware. It also describes common operating system components like kernels, system calls, and memory management techniques like program overlays.
MYSQL DATABASE Operating System Part2 (1).pptx
The document provides an overview of different types of operating systems:
- Early computers used batch processing systems where users submitted jobs offline via punch cards and the computer processed them in batches.
- Multiprogramming systems allowed multiple programs to run simultaneously by quickly switching between them, improving resource usage compared to batch systems.
- Time-sharing systems further extended this by allowing many users to access a single computer simultaneously through rapid switching between terminals.
- Distributed systems connect multiple autonomous computers to work together and share workload, with examples including client-server, peer-to-peer, and middleware architectures.
Firo
This document discusses an operating system slideshow presentation titled "Operating System". It provides details on the presentation such as the number of views it has received, when it was published, and comments and likes from other users. The presentation contains information on operating system concepts such as processes, memory management, CPU scheduling, and deadlocks.
Es 2 mark
This document contains questions and answers related to embedded systems. It covers topics like introduction to embedded systems, processor and memory management, devices and buses for device networks, and I/O programming and scheduling mechanisms.
Some key points covered include definitions of embedded systems, microcontrollers and their components; classifications of embedded systems; memory types; processor architecture; communication protocols like I2C and CAN; parallel and serial interfaces; scheduling concepts like tasks, threads, interrupts, semaphores and mutex; and programming languages for embedded systems like C and Java.
Detailed explanations are required for concepts like structural units of a processor, cache mapping techniques, memory mapping, DMA operation, timer devices, communication buses, I/O
Intermediate Operating Systems
An operating system is a set of programs that manages computer hardware resources and provides common services for computer programs. It controls input/output devices, allocates storage and processing time, and presents a simplified view of the system to users and programs. Key functions of an operating system include efficiently utilizing resources, isolating users from hardware complexities, and loading itself into memory on startup. Operating systems are designed for different operational modes like batch, time-sharing, and real-time to suit various usage scenarios.
MC 7204 OS Question Bank with Answer
This document provides definitions and explanations of key operating system concepts. It begins with defining an operating system as a program that manages computer hardware and acts as an interface between users and hardware. It then lists operating system functions like process management, memory management, and I/O management. The document discusses different types of systems like batch, interactive, time-sharing and real-time systems. It also covers process states, scheduling, and synchronization concepts like critical sections.
Operating syestem class 9 notes.doc
This document contains a chapter about operating systems that includes multiple choice questions, fill in the blank questions, true/false questions, and short answer questions. It covers topics such as the definition of an operating system, examples of different types of operating systems like multi-user, real-time, and multitasking operating systems. It also discusses operating system functions like memory management, processor management, file management, and security. Popular operating systems mentioned include Windows, Linux, Unix, Android, and iOS.
Ec8791 unit 5 processes and operating systems
Introduction – Multiple tasks and multiple processes – Multirate systems- Preemptive realtime operating systems- Priority based scheduling- Interprocess communication mechanisms – Evaluating operating system performance- power optimization strategies for processes –Example Real time operating systems-POSIX-Windows CE. – Distributed embedded systems – MPSoCs and shared memory multiprocessors. – Design Example – Audio player, Engine control unit – Video accelerator.
Operating Systems
Theory related to OS :
It Includes:
1. Unit I (COMPONENTS OF COMPUTER SYSTEM)
2. Unit II (OPERATING SYSTEM STRUCTURE)
3. Unit III (PROCESS MANAGEMENT)
4. Unit IV (MEMORY MANAGEMENT)
5. Unit V (FILE SYSTEM)
6. Unit VI (INPUT OUTPUT SYSTEM)
Operating System and related questions
An operating system is a program that manages the computer hardware. It also provides a basis for application programs and act as an intermediary between a user of a computer and the computer hardware. It controls and coordinates the use of the hardware among the various application programs for the various users.
Multi processor
multiprocessor is a computer system having two or more processing units. this presentation provide more information about it and how it works and handle instructions, its types and its advantages.
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Assignment1OS
- 1. ASSIGNMENT 1 Date: 9-8-2012 Submission date: 14-8- 2012 Q1. Briefly explain four major functions of operating system. Also explain four services of operating system. Q2. Give main features of the following types of OS, outlining their limitations and strengths. 1. Batch OS 2. Multi-programmed OS 3. Interactive Time Sharing OS 4. Real time OS 5. Multithreaded OS 6. Multi processor OS 7. Kernel 8. Reentrant and monolithic kernel Q3. What type of OS will meet the requirements under the following environments? 1. A large mainframe computer, made available for software development team of about 100 programmers. 2. A system receiving input from sensors and controlling Air Defense Weapons. 3. A system used for process control in an oil refinery. 4. Multi-purpose fuel injection system used in vehicles. 5. A system used for processing of information stored on magnetic tapes and producing hard copies of output. Q4. State true or false: 1. In batch systems jobs are executed in sequential manner. 2. Spooling means buffering of output jobs onto a disk. 3. In real time systems, the main focus is on good response, rather than optimization of resources. 4. Multi programming implies multiple processes are in running state simultaneously. 5. In an interactive time sharing system, fast response to user commands is not of much importance. 6. OS calls can be embedded in user programs.
- 2. 7. A multi processor system implies a loosely coupled network of processors connected by LAN/WAN. 8. A multi processor system implies a system having multiple CPUs sharing a common bus and clock. 9. A distributed system implies a system, having a number of autonomous computers, connected by LAN/WAN. 10. A time sharing system consists CPU scheduling and multiprogramming. Q5. Explain interrupt servicing mechanism, clearly bringing the role of OS in that. Q6. Explain salient features of program-controlled I/O, Interrupt Driven I/O and DMA, highlighting their relative merits and demerits. What is spooling?