Operating System

Nicolas Viscio
Mind Map by Nicolas Viscio, updated more than 1 year ago
Nicolas Viscio
Created by Nicolas Viscio over 6 years ago
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sistema operativo

Resource summary

Operating System
  1. What is an operating system?
    1. An operating system is system software that manages computer hardware and software resources and provides common services for computer programs
    2. How it works?
      1. Operating systems provide a software platform on which other programs, called applications, can function. .
      2. Types of operating system
        1. Single-Tasking: A single-tasking system can only run one program at a time.
          1. Multi-Tasking: Multi-tasking operating system allows more than one program to be running in concurrency.
            1. Single-User: Single-user operating systems have no facilities to distinguish users, but may allow multiple programs to run in tandem.
              1. Multi-User: A multi-user operating system extends the basic concept of multi-tasking with facilities that identify processes and resources, such as disk space, belonging to multiple users, and the system permits multiple users to interact with the system at the same time.
                1. Distributed: A distributed operating system manages a group of distinct computers and makes them appear to be a single computer.
                  1. Templated: In an OS, distributed and cloud computing context, templating refers to creating a single virtual machine image as a guest operating system, then saving it as a tool for multiple running virtual machines
                    1. Embedded: Embedded operating systems are designed to be used in embedded computer systems.
                      1. Real-Time: A real-time operating system is an operating system that guarantees to process events or data within a certain short amount of time.
                        1. Library: A library operating system is one in which the services that a typical operating system provides, such as networking, are provided in the form of libraries.
                        2. Operating system functions
                          1. 1- It manages the hardware and software resources of the system.
                            1. 2- It provides a stable, consistent way for applications to deal with the hardware without having to know all the details of the hardware.
                            2. Operating systems developements
                              1. Operating system developers have made the Internet the standard method for delivering crucial operating system updates and bug fixes. Although it's possible to receive these updates via CD or DVD, it's becoming increasingly less common. In fact, some entire operating systems themselves are only available through distribution over the Internet. Further, a process called NetBooting has streamlined the capability to move the working operating system of a standard consumer desktop computer -- kernel, user interface and all -- off of the machine it controls. This was previously only possible for experienced power-users on multi-user platforms like UNIX and with a suite of specialized applications.
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