An operating system provides an environment for the execution of programs

An operating system provides services to programs and to the users of those programs. It provides an environment for the execution of programs. The services provided by one operating system is different than other operating system.

Operating system with multiple users provide following services.

• Resource allocation
• Accounting
• Protection

• An operating system is a lower level of software that user programs run on. OS is built directly on the hardware interface and provides an interface between the hardware and the user program. It shares characteristics with both software and hardware.

• We can view an operating system as a resource allocator. OS keeps track of the status of each resource and decides who gets a resource, for how long, and when OS makes sure that different programs and users running at the same time but do not interfere with each other. It is also responsible for security, ensuring that unauthorized users do not access the system.

• The primary objective of operating systems is to increase productivity of a processing resource, such as computer hardware or users.

• The operating system is the rust program run on a computer when the computer boots up. The services of the OS are invoked with a system call instruction that is used just like any other hardware instruction.

  An operating system is a program that manages a computer's hardware. It also provides a basis for application programs and acts as an intermediary between the computer user and the computer hardware. An amazing aspect of operating systems is how they vary in accomplishing these tasks. Mainframe operating systems are designed primarily to optimize utilization of hardware. Personal computer (PC) operating systems support complex games, business applications, and everything in between. Operating systems for mobile computers provide an environment in which a user can easily interface with the computer to execute programs. Thus, some operating systems are designed to be convenient, others to be efficient, and others to be some combination of the two.

  Before we can explore the details of computer system operation, we need to know something about system structure. We thus discuss the basic functions of system startup, I/O, and storage early in this chapter. We also describe the basic computer architecture that makes it possible to write a functional operating system.

  Because an operating system is large and complex, it must be created piece by piece. Each of these pieces should be a well-delineated portion of the system, with carefully defined inputs, outputs, and functions. In this chapter, we provide a general overview of the major components of a contemporary computer system ...

  An operating system provides the environment within which programs are executed. Internally, operating systems vary greatly in their makeup, since they are organized along many different lines. The design of a new operating system is a major task. It is important that the goals of the system be well defined before the design begins. These goals form the basis for choices among various algorithms and strategies.

  We can view an operating system from several vantage points. One view focuses on the services that the system provides; another, on the interface that it makes available to users and programmers; a third, on its components and their interconnections. In this chapter, we explore all three aspects of operating systems, showing the viewpoints of users, programmers, and operating system designers. We consider what services an operating system provides, how they are provided, how they are debugged, and what the various methodologies are for designing such systems. Finally, we describe how operating systems are created and how a computer starts its operating system.

  CHAPTER OBJECTIVES

  • To describe the services an operating system provides to users, processes, and other systems.
  • To discuss the various ways of structuring an operating system.
  • To explain how operating systems are installed and customized and how they boot.

  2.1 Operating-System Services

  An operating system provides an environment for the execution of programs. It provides certain ...

  What does an operating system provide for the execution of programs?

  The operating system (OS) manages all of the software and hardware on the computer. It performs basic tasks such as file, memory and process management, handling input and output, and controlling peripheral devices such as disk drives and printers.

  What is an operating system environment?

  An Operating System Environment (physical or virtual) is defined as all or part of an operating system instance which enables separate machine identity or separate administrative rights, and instances of applications configured to run on the operating system instance.

  How can you say that operating system provides an environment in which a user can execute programs in a convenient and efficient manner?

  An operating system (OS) is a program that controls the execu- tion of an application program and acts as an interface between the user of a computer and computer hardware. The purpose of an OS is to provide an environment in which a user can execute programs in a convenient and efficient manner. it does them.

  What is an operating system and its role in the computing environment?

  An operating system is the most important software that runs on a computer. It manages the computer's memory and processes, as well as all of its software and hardware. It also allows you to communicate with the computer without knowing how to speak the computer's language.