Introduction to Operating Systems | IIT Madras - #5 Sharing the CPU | Introduction to Operating Systems

Welcome to 'Introduction to Operating Systems' course ! This lecture delves into the challenges and techniques involved in sharing the CPU among multiple processes. It emphasizes the importance of efficient CPU management in operating systems. The lecture discusses different approaches to CPU sharing, starting with the simple sequential execution model and highlighting its limitations in terms of responsiveness and efficiency. It then introduces multitasking and time-sharing as more sophisticated approaches, explaining how the CPU time is divided into time slices to allow multiple processes to execute concurrently. The lecture further explores multiprocessor systems, highlighting the challenges in managing multiple CPUs and ensuring proper synchronization and isolation. Finally, it discusses the need for isolation and security in multitasking environments, touching upon techniques like user passwords and cryptography. NPTEL Courses permit certifications that can be used for Course Credits in Indian Universities as per the UGC and AICTE notifications. To understand various certification options for this course, please visit https://nptel.ac.in/courses/106106144 #CPUSharing #Multitasking #TimeSharing #MultiprocessorSystems #Isolation #Security