operating system (OS) Presentation ).pptx
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This presentation covers the fundamentals of operating systems, including their structure, main functions, and popular examples like Windows, macOS, Linux, Android, and iOS. It discusses various OS structures such as monolithic kernels, microkernels, and hybrid kernels, as well as critical functions including device, file, memory, and processor management. The conclusion highlights ongoing challenges in OS development, particularly in low-power devices and virtualization in cloud computing.
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operating system (OS) Presentation ).pptx
- 1. A presentation on operating system (OS) Name:- Sana Gul, ICT Semester presentation. Date:- 20 Jan, 2024
- 2. Flow of presentation Introduction Structure of OS Main function of OS Some popular operating system Conclusion
- 3. Introduction An operating system (OS) is a software that manages computer hardware and provides an environment for user programs to run efficiently and securely. The OS acts as an intermediary between the user of a computer and computer hardware, providing an environment in which a user can execute programs conveniently and efficiently.
- 4. Structure of OS The structure of an operating system (OS) can be classified into several categories. Here are some of the most common types of OS structures: Monolithic kernel: This type of OS structure has all the OS services running in the same address space as the kernel. Microkernel: This type of OS structure has only the essential services running in the kernel space, while other services run in user space. Hybrid kernel: This type of OS structure is a combination of the monolithic and microkernel structures. Layered architecture: This type of OS structure is organized into a hierarchy of layers, where each layer provides a set of services to the layer above it. Virtual machines: This type of OS structure is designed to run multiple operating systems on a single physical machine.
- 5. Main function of OS Some of the important characteristic features of OS are: Device management: The operating system keeps track of all the devices and decides which process gets the device, when and for how much time. File management: The operating system manages the creation, deletion, and modification of files and directories. Memory management: The operating system manages the allocation and deallocation of memory to processes. Processor management: The operating system allocates the processor to a process and then de-allocates the processor when it is no longer required or the job is done. Security: The operating system provides security mechanisms to protect the system and its resources from unauthorized access.
- 6. Some popular operating system There are many popular operating systems (OS) available today. Here are some of the most widely used ones: Windows: Developed by Microsoft, Windows is one of the most popular operating systems for personal computers. macOS: Developed by Apple, macOS is the operating system used on Apples Macintosh computers. Linux: Linux is a free and open-source operating system that is widely used in servers, supercomputers, and mobile devices. Android: Developed by Google, Android is the most widely used operating system for mobile devices. iOS: Developed by Apple, iOS is the operating system used on Apples mobile devices
- 7. Conclusion In conclusion, operating systems are still a current topic and there are many other things a real OS would have to implement. There are still lots of hard problems to solve, such as scheduling, and as hardware changes, OSs must change too. OSs for low-power devices (in particular mobile phones) are a huge source of research, and OS virtualization is important in the era of cloud computing.
- 8. THANK YOU.