Types of Real Time Operating System

Duration: 4 min

This video lesson is available to enrolled students.

Return to /learn/BIHAR-STET-COMPUTER-SCIENCE-COMPLETE-COURSE/unit-5-operating-system/introduction-to-os/os-types-evolution/asset-types-of-real-time-operating-system after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About the course: About the Course
  2. Mathematical Aptitude: Number System, HCF LCM, Divisibility Rules, Percentage, Ratio and Proportion (Ratios), Average, Profit and Loss, Time and Work, Mensuration and Geometry, Simple Interest and Compound Interest, Speed Time and Distance, Age Problems, Mixture and Alligation, Algebra, Powers and Exponents (Surds and Indices), Pipe and Cistern, Trigonometry, Statistics, Data Interpretation, Arithmetic
  3. Logical Reasoning: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Analogy, Blood Relations, Directions (Direction Test), Ranking, Order and Sequence, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Seating Arrangements, Syllogisms, Venn Diagram, Puzzle Solving (Puzzles), Logical Sequence Of Words, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Analytical Reasoning (Counting Figures Reasoning), Cubes & Dices, Calendar, Clock
  4. General Knowledge: Physics, Chemistry, Biology, History, Geography, Polity, Indian Economy, GK- Current Affairs, Static General Knowledge
  5. Art of Teaching: Nature, Objectives & Characteristics of Teaching, Learners & Learning Process, Factors Affecting Teaching, Methods of Teaching, Classroom Management & Communication, Teaching-Learning Aids & ICT Integration, Evaluation, Assessment & Measurement, Professional Development & Ethics, Policies, Acts & Contemporary Issues, Curriculum & School Environment, Guidance, Counselling & Mental Health, Inclusive Education & Special Needs, Micro-Teaching & Teaching Skills, Lesson Planning
  6. Environmental Science: Environment
  7. Unit 1 | Digital Electronics: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation
  8. Unit 2 | COA: Basics of COA, Floating Point Rep, Cache Memory Organization, Input Output Organisation, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations, Programming the Basic Computer
  9. Unit 3 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  10. Unit 3 | Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  11. Unit 4 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Advanced Algorithms
  12. Unit 5 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management
  13. Unit 6 | Database Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, SQL, Transaction Management, Concurrency Control
  14. Unit 7 | Computer Networks: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer
  15. Unit 8 | Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  16. Unit 9 | Object Oriented Programming: OOPS with C++
  17. Unit 10 | Web Development: HTML Basics, CSS, JavaScript-Basics, XML
  18. Unit 11 | Theory Of Computation: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines
  19. Unit 12 | IoT: Emerging Tech Trends, Cloud Computing
  20. Unit 13 | Artificial Intelligence: Approaches to AI, Search Algorithms, Game Playing, Knowledge Representation, Natural Language Processing, Artificial Neural Networks, Genetic Algorithms
  21. Unit 14 | E-Commerce: Electronic Data Interchange and E-Commerce, Role of Internet and Web Services, Security in Mobile and Wireless Computing, Physical Security and Cryptography Basics, Cyber Safety and Security
  22. Unit 15 | Multimedia: Multimedia
  23. Unit 16 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis, DSA using Python
  24. Full Length Mock Tests — General Paper:
  25. Full Length Mock Tests — Computer Science (Paper II):
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video provides a comparative analysis of Hard and Soft Real-Time Operating Systems (RTOS). The instructor begins by defining Hard Real-Time OS, emphasizing its strict adherence to deadlines where failure to meet a deadline results in total system failure. The lecture then transitions to Soft Real-Time OS, explaining that while it has deadlines, missing them does not cause catastrophic failure but rather a degradation in performance. Visual aids, including graphs plotting "Value/Usefulness" against "time," are used to illustrate the distinct behaviors of these systems. Examples such as automotive safety systems and video games are provided to contextualize the theoretical concepts for students.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The segment introduces the "Hard real-time operating system" via a slide containing specific text and a graph. The on-screen text states that this OS is "predicted by a deadline" and reacts at "time t = 0." The instructor underlines key phrases like "hard real-time" and examples including "air bag control in cars," "anti-lock brake," and "engine control system." A graph is displayed with "Value/Usefulness" on the y-axis and "time" on the x-axis. A red line represents the system's value, remaining constant until a specific "deadline" point, after which it drops vertically to zero. The instructor uses a red pen to draw on the slide to emphasize that missing the deadline renders the system useless. A background image of a control room with operators reinforces the critical nature of these systems. The core takeaway is that in Hard RTOS, meeting the deadline is mandatory; otherwise, the consequence is failure.

  2. 2:00 – 3:52 02:00-03:52

    The lecture shifts to "Soft real-time operating system." The slide text explains that deadlines "may be missed" and action is taken at "time t=0+." It notes that this OS "does not contain constrained to extreme rules" and critical time is "delayed to some extent." The instructor underlines examples such as "digital camera," "mobile phones," and "online data." The accompanying graph shows a green line that stays constant until the deadline, then slopes downward gradually rather than dropping instantly. The instructor draws on the graph to show this gradual decline in value. An image from the game "PlayerUnknown's Battlegrounds" is shown as a visual example. The explanation highlights that while performance degrades after the deadline, the system remains functional, unlike the Hard RTOS where value becomes zero immediately.

The video effectively contrasts Hard and Soft Real-Time Operating Systems by focusing on deadline strictness and the consequences of missing them. Hard RTOS is characterized by a binary outcome where value is either full or zero, suitable for safety-critical applications. Soft RTOS allows for flexibility, where value degrades over time, making it suitable for multimedia and consumer electronics. This distinction is crucial for understanding system design requirements in embedded computing and selecting the appropriate OS for specific hardware constraints.

Loading lesson…