Summary
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Welcome to 'Introduction to Operating Systems' course ! This lecture introduces the concept of interrupts in operating systems, explaining how interrupts enable event-driven execution. It classifies events into hardware interrupts, traps, and exceptions, providing examples and highlighting the differences between them. The lecture focuses on hardware interrupts, discussing the role of programmable interrupt controllers (PICs) in handling interrupt requests from external devices. It further explains the structure of Interrupt Descriptors and their role in directing the CPU to the appropriate interrupt service routine (ISR). 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 #Interrupts #EventDriven #PIC #InterruptDescriptors
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