Process Control Block explained | Life Cycle of a Process in OS | Process in OS | part (3/3)

Опубликовано: 06 Март 2026
на канале: Tech Instance
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Welcome to the third and final part of our Operating System Process Management series!
In this video, we dive deep into Process Control Block (PCB) — a critical data structure that the OS uses to manage processes.
We also explore the life cycle of a process, including different states like new, ready, running, waiting, and terminated.

📌 Topics Covered:

What is a Process Control Block (PCB)?

Components/Fields of a PCB

Process States & Life Cycle

State Transitions Explained

Role of OS in Process Management

🎥 Previous Videos in This Series:
1️⃣ Part 1 – Introduction to Processes & Process Scheduling [   • Processes Abstraction in Operating Systems...  ]
2️⃣ Part 2 – Process States & Context Switching [   • Process Management explained | Fork(), Exe...  ]
2️⃣ Part 3 - Process Control Block in OS & Process life cycle in OS [   • Process Control Block explained | Life Cyc...  ]

💡 Whether you're preparing for university exams, interviews, or just want to strengthen your OS fundamentals, this video is for you!

👉 Don’t forget to Like, Subscribe, and Share if you found this helpful.
📥 Comment below with your questions!

#OperatingSystem #ProcessManagement #PCB #ProcessStates #OSTutorial #ComputerScienceBasics #OSLifeCycle #ProcessControlBlock #OperatingSystem #OSTutorial #PCB #ProcessStates #StateTransition #ComputerScience #SoftwareEngineering #OperatingSystemLecture

0:00 Introduction
0:49 Recap of Processes
3:25 Recap of Process Context . Process Context
3:55 Process vs. Context Switches
8:10 Kernel (Privileged) Mode
11:00 3 types of Mode Transfer
11:34 Life cycle of a Process
16:15 Process Control Block (PCB)
23:02 Switching Processes
23:18 Process Scheduling Queues
25:37 Process Schedulers
26:42 Dispatcher
27:16 Process vs. Thread