Operating system
Download as PPTX, PDF5 likes220 views
This document provides an overview of operating systems including definitions, types, history, examples, components, real-time operating systems, operating system development as a hobby, diversity and portability, market share, and network operating systems. It was presented by Group 6 from the Computer Science and Engineering department of DIU university to lecturer Nasrin Akter.
Operating system
- 1. Operating system Presented by Group 6 ID: 151-15-5021 151-15-4945 151-15-4869 151-15-5102 151-15-5103 Dept: CSE DIU Presnted to Nasrin Akter Lecturer Dept. of CSE DIU
- 2. Agenda Defination Types of operating system History Examples of operating system Components Real time operating system As a hobby Diversity and portability Market share Network operating system
- 3. What is operating system? An operating system (OS) is software that manages computer hardware and software resources and provides common services for computer programs.
- 4. Types of operating system 1. Single and multi-tasking operating system 2. Single and multi-user operating system 3. Distributed operating system 4. Templated operating system 5. Embedded operating system 6. Real time operating system
- 5. History of operating system There are two types of system in the History of operating system. Mainframe computer: IBM OS/360, 1966 IBM CP-67, 1967 Microcomputers: The first microcomputer did not have the capacity or need for the elaborate oper ating systems that had been developed for mainframes and minis; minimalistic operating systems were developed, often loaded from ROM and known as monitors.
- 6. Example of operating system • Unix and Unix-like operating system • BSD and its descendants • OS X • Linux and GNU • Google Chromium OS Google Chromium OS
- 7. Components The components of an operating system all exist in order to make the different parts of a computer work together. • Kernel • Program execution • Interrupts • Modes • Memory Management • Virtual memory • Multitasking • Disk access and files systems • Device drivers • Networking • Security • User interface
- 8. Real time operating system A real-time operating system (RTOS) is an operating system intended for applications with fixed deadlines real-time computing. Such applications include some small embedded systems automobile engine controllers, industrial robots, spacecraft, industrial control, and some large-scale computing systems.
- 9. As a hobby Operating system development is one of the most complicated activities in which a computing hobbyist may engage. In some cases, hobby development is in support of a “homebrew” computing device, for example, a simple single-board computer powered by a 6502 microprocessor
- 10. Diversity and Portability Application software is generally written for use on a specific operating system, and sometimes even for specific hardware. This cost in supporting operating systems diversity can be avoided by instead writing applications against software platforms like Java or Qt.
- 11. Market share Operating system 2012(Million of Units) 2013(Million of Units) Android 504 878 Window 346 328 iOS /Mac OS 214 267 Blackberry 35 24 Others 1,117 803 Total 2,216 2,300 2013 Worldwide Device Shipments by Operating System
- 12. Network operating system Network operating system refers, to software that implements an operating system of some kind that is oriented to computer networking. Advantages Ease of setup Less hardware needed, no server needs to be purchased. Disadvantages No central location for storage. Lack of security that a client/server type offers.