The Operating Systems (OS)

The Operating Systems (OS)

1. What is it?

   • An operating system is a program or set of programs on a computer system that manages hardware resources and provides services to application programs.

2. How it works?

   • The OS performs two basic functions: it works as administrator of the hardware and software resources of the system. The operating system tasks are divided into six categories: management processor, memory management,.

3. Types of OS

   • A real-time operating system is a multitasking operating system that aims at executing real-time applications.
   • A multi-tasking operating system allows more than one program to be running at the same time, from the point of view of human time scales.
   • A distributed operating system manages a group of independent computers and makes them appear to be a single computer.
   • Templated In an o/s, distributed and cloud computing context, templating refers to creating a single virtual machine image as a guest operating system
   • Embedded operating systems are designed to be used in embedded computer systems. They are designed to operate on small machines like PDAs with less autonomy.

4. OS functions

   • -System tools (programs) used to monitor computer performance, debug problems, or maintain parts of the system. -A set of libraries or functions which programs may use to perform specific tasks especially relating to interfacing with computer system components.

5. OS developments.

   • The first systems (1945-1955) were large machines operated from the master console by programmers. Over the next decade (1955-1965) were carried out advances in hardware: card readers, printers, magnetic tapes, etc. This in turn led to a breakthrough in software compilers, assemblers, loaders, device drivers, etc.
   • In the late 1980s, a computer equipped with an accelerator Commodore Amiga Video Toaster was capable of producing effects compared to dedicated systems costing three times. A Video Toaster with Lightwave helped produce many TV shows and movies, among which include Babylon 5, SeaQuest DSV and Terminator 2.7