Real Time Operating System

By Prof. Rajib Mall   |   IIT Kharagpur
Learners enrolled: 3995
In several software applications, especially in embedded application, the operating system is required to support the application to meet the timing constraints. The operating system achieves this by deploying suitable scheduling algorithms. A major problem arises, when the real-time tasks share resources. Priority inversions can take place in this case, unless suitable techniques are deployed. Starting with a brief introduction to real-time operating systems, we first discuss the important real-time task/thread scheduling algorithms and resource sharing protocols. An effort towards standardization of real-time operating systems has come to be known as POSIX-RT. We review POSIX-RT requirements. Besides, we review several commercial and open source real-time  operating systems.
PRE-REQUISITES   : C Programming,Operating Systems
Course Status : Ongoing
Course Type : Elective
Duration : 4 weeks
Start Date : 15 Feb 2021
End Date : 12 Mar 2021
Exam Date : 24 Apr 2021
Enrollment Ends : 15 Feb 2021
Category :
  • Computer Science and Engineering
Level : Postgraduate

Course layout

Week 1: Introduction
Week 2: Characteristics of real-time systems  
Week 3: Modelling time constraints 
Week 4: Basic concepts in real-time operating systems

Books and references

1. Rajib Mall, Real-Time Systems: Theory and Practice, Pearson, 2008

Instructor bio

Prof. Rajib Mall

IIT Kharagpur
Rajib Mall is Professor, Department of Computer Science and Engineering, Indian Institute of Technology Kharagpur, West Bengal. He has more than a two decades of teaching  experience in the areas of program analysis and testing. He has written five text books and over 150 refereed research papers.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 24 April 2021 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 3 assignments out of the total 4 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Kharagpur .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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