Operating systems

What operating systems are about

An operating system is software that controls hardware. It includes a series of programs that controls the operation of the physical component, allowing the user to use the computer or other equipment.

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The administrative system is in charge of managing the resources offered by the hardware and works as an intermediary between the computer and its user. Likewise, it provides an environment where the user has the possibility of executing programs in a convenient and efficient way.

The names of some operating systems are usually recognized by the suffix OS, for its acronym in English operating systems. Such is the case with: MS-DOS, MacOS . Usually the operating system is pretty much the basic software created by the company that makes the computer.

Types of operating systems

Operating systems may vary depending on the hardware and its function.

Multiprocessor systems: Also called parallel or closely coupled systems, multiprocessor systems have two or more CPUs that share buses and sometimes the clock, peripheral devices, and sometimes memory. There are 2 types:

  • Symmetric multiprocessor – All processors carry out the same tasks.
  • Asymmetric multiprocessor: each processor fulfills a specific task.

Portable Computer Operating Systems : Handheld portable computers in this area refer to small devices that can be operated with one hand, such as tablets, notebooks, and smartphones. In addition to this, operating systems allow telephones to add components for interface and communications.

Multimedia systems: multimedia systems are programmed to handle multimedia data files: video data files, audio files, such as MP3s, videos, and DVD movies. These files require processing at a certain time and at a fixed and permanent speed for efficient delivery.

Embedded or real-time operating systems : embedded or real-time operating systems are those installed in medical devices, electrical appliances, automobiles, among others. It carries out specific functions of the equipment in question, these are:

  • Stick to limited times.
  • Save battery power.
  • It does not need human supervision.

Distributed systems: a distributed system has a collection of processors that do not share a clock or memory, and are connected by an interconnected network.

Monoprocessor system: in the monoprocessor system there is a single central processing unit (CPU) with the ability to execute a series of general executions.

Operating system features

The operating system is responsible for managing the material resources of the computer:

  • The data storage space.
  • The input and output device .
  • The usage time of the processing unit.
  • The memory space.

A relationship that will allow understanding the operation of the operating system is like the director of a symphony orchestra, the conductor of the orchestra does not have any instrument but has the ability to direct the musicians to play at the right time.

Maintaining security

Computer security is a function carried out by the operating system:

  • Establish privileged instructions and management of privilege levels to maintain security against insider attacks.
  • Protects computer resources against the entry of unauthorized persons: this occurs thanks to the creation of accounts for different users.

Management of resources between processes

The resources of the computer include the peripheral devices (as well as the DVD reader and the printer) and the functionalities of the device.

Examples of operating systems

  • MAC OS: The operating system created by the Apple Macintosh company especially for MAC OS personal computers and laptops works according to a graphical user interface, referring to the UNIX kernel.
  • Linux : It is an operating system created for the public domain and free, originally designed by Linus Torvalds. This system allows the user to select the window manager of their preference, such as KDE and Gnome.
  • IOS: it is part of the Apple Macintosh company aimed at their mobile systems: iPhone and iPod. It emerged from MAC OS / OX in 2007.

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